What dyno numbers do you predict for my MTI ironblock 427?
12-06-2002, 11:38 AM
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What dyno numbers do you predict for my MTI ironblock 427? MTI will be installing and tuning my 427 cubed LQ4 LS1 stroker in my 98 C5 shortly after the first of the year.
My 6.0liter LQ4 ironblock will be overbored to 4.060 and a forged 4.125 stroker crank will be used. MTI will be utilizing their best racing components that they use on all of their resleeved aluminum block strokers (like Nineballs and the Colonel's original 422). Like Nineball and the Colonels first 422, i will be using both MTI's best stage III LS6 heads and their most aggressive hyd. cam, the S1, with specs of 244/244, .612 lift and 112 lope. Compression will be around 11:25 to 1 and engine will stay naturally aspirated.
DO you think the oversquared nature (stroke larger than bore) of the engine (4.060 with 4.125 crank) will cost me some ponies or reliability vs. MTI's traditional resleeved 422 that uses a bigger bore than crank) and what numbers do you think i will pull on MTI's dyno going thru my 3.73s and FLP AUTOMATIC tranny with Prothruster 4000 stall. If you do believe the oversquare motor will cost me some ponies how much do you think i will be jeopardizing. Also, any other comments about the bore and stroke my 427 will be utilizing, both good and bad, is appreciated. Engine will also utilize MTI custom 3 inch exhaust and high flow cats going thru my TPIS headers.
Obviously the huge stroke will make this engine a torque monster but i hope i don't jeopardize to much horespower or reliability with the smaller bore size (4.060) and huge stroke (4.125).
Thanks for all input.
MTI 425 C5 Roadster <img border="0" alt="[Burnout]" title="" src="graemlins/burnout.gif" /> <img border="0" alt="[Corvette]" title="" src="graemlins/corvette.gif" />
<small>[ December 08, 2002, 10:57 PM: Message edited by: MTI 427 C5 Roadster ]</small>
My 6.0liter LQ4 ironblock will be overbored to 4.060 and a forged 4.125 stroker crank will be used. MTI will be utilizing their best racing components that they use on all of their resleeved aluminum block strokers (like Nineballs and the Colonel's original 422). Like Nineball and the Colonels first 422, i will be using both MTI's best stage III LS6 heads and their most aggressive hyd. cam, the S1, with specs of 244/244, .612 lift and 112 lope. Compression will be around 11:25 to 1 and engine will stay naturally aspirated.
DO you think the oversquared nature (stroke larger than bore) of the engine (4.060 with 4.125 crank) will cost me some ponies or reliability vs. MTI's traditional resleeved 422 that uses a bigger bore than crank) and what numbers do you think i will pull on MTI's dyno going thru my 3.73s and FLP AUTOMATIC tranny with Prothruster 4000 stall. If you do believe the oversquare motor will cost me some ponies how much do you think i will be jeopardizing. Also, any other comments about the bore and stroke my 427 will be utilizing, both good and bad, is appreciated. Engine will also utilize MTI custom 3 inch exhaust and high flow cats going thru my TPIS headers.
Obviously the huge stroke will make this engine a torque monster but i hope i don't jeopardize to much horespower or reliability with the smaller bore size (4.060) and huge stroke (4.125).
Thanks for all input.
MTI 425 C5 Roadster <img border="0" alt="[Burnout]" title="" src="graemlins/burnout.gif" /> <img border="0" alt="[Corvette]" title="" src="graemlins/corvette.gif" />
<small>[ December 08, 2002, 10:57 PM: Message edited by: MTI 427 C5 Roadster ]</small>
12-06-2002, 03:41 PM
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Re: What dyno numbers do you predict for my MTI ironblock 427? I guess 440rwhp unlocked, 460rwhp locked. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
12-06-2002, 03:48 PM
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Re: What dyno numbers do you predict for my MTI ironblock 427? all the best stuff, that rather big cam, 11.25:1
460 unlocked
490 locked
my 436 pulled 480 RWHP, untuned, 3 psi loss of fuel pressure right at 5000 rpm. With a 242/242 .610/.610 114lsa. Shouldn't you be close to that?
460 unlocked
490 locked
my 436 pulled 480 RWHP, untuned, 3 psi loss of fuel pressure right at 5000 rpm. With a 242/242 .610/.610 114lsa. Shouldn't you be close to that?
12-06-2002, 04:17 PM
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Re: What dyno numbers do you predict for my MTI ironblock 427? Terry Burger:
How come you believe i will only pull 440unlocked and 460 locked, on MTI 427 LQ4, utilizing MTI's most power producing heads and cam, the same being used by Nineball and the Colonel's original 422, along with 11:25 to 1 compression and MTI's tuning? <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />
Thanks man,
MTI 427 C5 Roadster
How come you believe i will only pull 440unlocked and 460 locked, on MTI 427 LQ4, utilizing MTI's most power producing heads and cam, the same being used by Nineball and the Colonel's original 422, along with 11:25 to 1 compression and MTI's tuning? <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />
Thanks man,
MTI 427 C5 Roadster
12-06-2002, 04:27 PM
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Re: What dyno numbers do you predict for my MTI ironblock 427? The cats are going to hurt you by at least 20RWHP.
That is one thing, also you are an A4 so unlocked numbers are QUITE variable. Also tranny slip comes into play as well at those power levels if your 4L60E is stock, engine ring seal and a bunch of other factors.
IRS in the vette combined with the A4 tranny, cats, relatively low compression (remember a lot of the 500RWHP plus guys are running 12:1-12.5:1 compression and mixtures of race gas with pump gas.)
That is why I said around 470RWHP on pump gas.
Actually I think if you do above 460RWHP unlocked you will be doing pretty good with cats on the car and have the ability to run 10's at full weight.
cheers,
Chris
That is one thing, also you are an A4 so unlocked numbers are QUITE variable. Also tranny slip comes into play as well at those power levels if your 4L60E is stock, engine ring seal and a bunch of other factors.
IRS in the vette combined with the A4 tranny, cats, relatively low compression (remember a lot of the 500RWHP plus guys are running 12:1-12.5:1 compression and mixtures of race gas with pump gas.)
That is why I said around 470RWHP on pump gas.
Actually I think if you do above 460RWHP unlocked you will be doing pretty good with cats on the car and have the ability to run 10's at full weight.
cheers,
Chris
12-06-2002, 04:35 PM
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Re: What dyno numbers do you predict for my MTI ironblock 427? I think you'll be lucky to break the 400 barrier!!!!!LOLOLOL Just messing with ya Jim!!!What did MTI say it would do????
12-06-2002, 06:52 PM
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Re: What dyno numbers do you predict for my MTI ironblock 427? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">
How come you believe i will only pull 440unlocked and 460 locked, on MTI 427 LQ4, utilizing MTI's most power producing heads and cam, the same being used by Nineball and the Colonel's original 422, along with 11:25 to 1 compression and MTI's tuning?
</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I think the combination of cats and a mild exhaust, the lower compression, and stroke bias of the engine are going to cost a lot of RWHP. In addition unlocked you're going to lose a lot of power through the tranny. The good news is even with only 440rwhp unlocked you'll probably still be able to run 10s with a good set of slicks. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
Remember Tony and Sanders have MTI sponsored cars so they get a lot of "extra" work that regular paying customers don't get.
How come you believe i will only pull 440unlocked and 460 locked, on MTI 427 LQ4, utilizing MTI's most power producing heads and cam, the same being used by Nineball and the Colonel's original 422, along with 11:25 to 1 compression and MTI's tuning?
</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I think the combination of cats and a mild exhaust, the lower compression, and stroke bias of the engine are going to cost a lot of RWHP. In addition unlocked you're going to lose a lot of power through the tranny. The good news is even with only 440rwhp unlocked you'll probably still be able to run 10s with a good set of slicks. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
Remember Tony and Sanders have MTI sponsored cars so they get a lot of "extra" work that regular paying customers don't get.
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12-06-2002, 10:10 PM
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Re: What dyno numbers do you predict for my MTI ironblock 427? Terry-You don't have to down grade his numbers just because he went with MTI. If it was through MMS then you would be claiming high 400's. If everyone can throw down big numbers with all bore 388's, then the 427 should easily be the next level of performance. You just have the extra weight penalty. What extra do you think they are getting that everyone else isn't. Better flow numbers on the heads. There is not much more that you could do to those engines that isn't already being done. <img border="0" title="" alt="[Roll Eyes]" src="images/icons/rolleyes.gif" />
12-07-2002, 12:05 AM
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Re: What dyno numbers do you predict for my MTI ironblock 427? I'm just giving him what I think are realistic figures. I'll bet you $40 he's closer to 440rwhp than 470rwhp unlocked. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
PS. When are you going to come to the track and race me???
PS. When are you going to come to the track and race me???
12-07-2002, 12:09 AM
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Re: What dyno numbers do you predict for my MTI ironblock 427? I obviously have, but always appreciate the input and dialogue from my fellow performance crazed LS1 comrades! <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
Thanks,
MTI 427 C5 Roadster
<small>[ December 06, 2002, 01:01 PM: Message edited by: MTI 427 C5 Roadster ]</small>
Thanks,
MTI 427 C5 Roadster
<small>[ December 06, 2002, 01:01 PM: Message edited by: MTI 427 C5 Roadster ]</small>
12-07-2002, 12:36 AM
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Re: What dyno numbers do you predict for my MTI ironblock 427? through an A4 locked or unlocked? I would guess around 470RWHP through cats, maybe a little more...
Cheers,
Chris
<small>[ December 06, 2002, 12:38 PM: Message edited by: Chris ARE 360 ]</small>
Cheers,
Chris
<small>[ December 06, 2002, 12:38 PM: Message edited by: Chris ARE 360 ]</small>
12-07-2002, 12:47 AM
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Re: What dyno numbers do you predict for my MTI ironblock 427? I guess thru locked converter and unlocked.
Is your estimate of 470rwhp, which i am also expecting the car to pull, for an unlocked converter?
MTI 427 Roadster
Is your estimate of 470rwhp, which i am also expecting the car to pull, for an unlocked converter?
MTI 427 Roadster
12-07-2002, 02:50 AM
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Re: What dyno numbers do you predict for my MTI ironblock 427? Slammed:
MTI left me with the general impression that i would be somewhere between 460 and 490rwhp and torque thru unlocked converter.
I would think 460 to 470 rwhp unlocked should be no problem with MTI's best heads and S1 cam and tuning, which has put out 500+rwhp in several M6 C5s with their 422 aluminum block stroker. Only time will tell and i am not too concerned about the dyno numbers but needless to say, it will be a long 2 month wait till my baby's all done and back in my garage, and a much longer wait before all the snow and ice is all melted here in Chi-town and we can do some real testing with our LQ4 strokers in our Stroked C5 Verts! <img border="0" alt="[Fluffy]" title="" src="graemlins/fluffy.gif" />
MTI 427 Roadster
MTI left me with the general impression that i would be somewhere between 460 and 490rwhp and torque thru unlocked converter.
I would think 460 to 470 rwhp unlocked should be no problem with MTI's best heads and S1 cam and tuning, which has put out 500+rwhp in several M6 C5s with their 422 aluminum block stroker. Only time will tell and i am not too concerned about the dyno numbers but needless to say, it will be a long 2 month wait till my baby's all done and back in my garage, and a much longer wait before all the snow and ice is all melted here in Chi-town and we can do some real testing with our LQ4 strokers in our Stroked C5 Verts! <img border="0" alt="[Fluffy]" title="" src="graemlins/fluffy.gif" />
MTI 427 Roadster
12-07-2002, 05:23 AM
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Re: What dyno numbers do you predict for my MTI ironblock 427? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Terry Burger:
<strong> </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">
How come you believe i will only pull 440unlocked and 460 locked, on MTI 427 LQ4, utilizing MTI's most power producing heads and cam, the same being used by Nineball and the Colonel's original 422, along with 11:25 to 1 compression and MTI's tuning?
</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I think the combination of cats and a mild exhaust, the lower compression, and stroke bias of the engine are going to cost a lot of RWHP. In addition unlocked you're going to lose a lot of power through the tranny. The good news is even with only 440rwhp unlocked you'll probably still be able to run 10s with a good set of slicks. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
Remember Tony and Sanders have MTI sponsored cars so they get a lot of "extra" work that regular paying customers don't get.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">so that explains a lot of what goes on over at MMS then. <img border="0" title="" alt="[Roll Eyes]" src="images/icons/rolleyes.gif" />
<strong> </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">
How come you believe i will only pull 440unlocked and 460 locked, on MTI 427 LQ4, utilizing MTI's most power producing heads and cam, the same being used by Nineball and the Colonel's original 422, along with 11:25 to 1 compression and MTI's tuning?
</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I think the combination of cats and a mild exhaust, the lower compression, and stroke bias of the engine are going to cost a lot of RWHP. In addition unlocked you're going to lose a lot of power through the tranny. The good news is even with only 440rwhp unlocked you'll probably still be able to run 10s with a good set of slicks. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
Remember Tony and Sanders have MTI sponsored cars so they get a lot of "extra" work that regular paying customers don't get.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">so that explains a lot of what goes on over at MMS then. <img border="0" title="" alt="[Roll Eyes]" src="images/icons/rolleyes.gif" />
12-07-2002, 08:11 AM
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Re: What dyno numbers do you predict for my MTI ironblock 427? Don't pay any attention to Terry. If its not about Morgan Motorsports, he just bashes it.
I'd estimate 460-470 thru the cats unlocked, 490 locked. MTI has done quite a few A4 big motored C5s with stock cats, and they still pull pretty decent numbers thru those stock cats.
</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Remember Tony and Sanders have MTI sponsored cars so they get a lot of "extra" work that regular paying customers don't get.</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Whatever you say jackass. I guess regular customers take several days of vacation to go do head gasket swaps and pull their own motors out too? There isn't anything "special" about my setup, in fact it was built on the mild side (tuning/compression) so that I can still run on pump gas. Everything in my motor is listed on my site and is available off the shelf. Same with Sander's 422. Are you really that ignorant? Wait, don't answer that Terry.
-Tony
I'd estimate 460-470 thru the cats unlocked, 490 locked. MTI has done quite a few A4 big motored C5s with stock cats, and they still pull pretty decent numbers thru those stock cats.
</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Remember Tony and Sanders have MTI sponsored cars so they get a lot of "extra" work that regular paying customers don't get.</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Whatever you say jackass. I guess regular customers take several days of vacation to go do head gasket swaps and pull their own motors out too? There isn't anything "special" about my setup, in fact it was built on the mild side (tuning/compression) so that I can still run on pump gas. Everything in my motor is listed on my site and is available off the shelf. Same with Sander's 422. Are you really that ignorant? Wait, don't answer that Terry.
-Tony
12-07-2002, 01:41 PM
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Re: What dyno numbers do you predict for my MTI ironblock 427? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Terry Burger:
<strong>I'm just giving him what I think are realistic figures. I'll bet you $40 he's closer to 440rwhp than 470rwhp unlocked. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
PS. When are you going to come to the track and race me???</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I was at irwindale on thursday, watched your run as well as others from the board. i cam over check out your car, you call that a street car? come on. its a empty shell with just motor in it. what RPM does your new cam idel at? sounded like over 1500 rpm. dont worry well be running pretty soon. my cluch is out. just for you terry i am going to stip everything out of the car so i could shut your big mouth up. i mean everything even the dash the heater core all that.
i ll let you know when. i will be soemtime early jan.
all you are is just smack talker cause you got fast car. i havent meet you in person, do you talk like you do here in real life? cause if you do we got problems.
<strong>I'm just giving him what I think are realistic figures. I'll bet you $40 he's closer to 440rwhp than 470rwhp unlocked. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
PS. When are you going to come to the track and race me???</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I was at irwindale on thursday, watched your run as well as others from the board. i cam over check out your car, you call that a street car? come on. its a empty shell with just motor in it. what RPM does your new cam idel at? sounded like over 1500 rpm. dont worry well be running pretty soon. my cluch is out. just for you terry i am going to stip everything out of the car so i could shut your big mouth up. i mean everything even the dash the heater core all that.
i ll let you know when. i will be soemtime early jan.
all you are is just smack talker cause you got fast car. i havent meet you in person, do you talk like you do here in real life? cause if you do we got problems.
12-07-2002, 02:07 PM
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Re: What dyno numbers do you predict for my MTI ironblock 427? I'm curious what it would do with MTI's worst components and worst heads! Just playin!
I hope you get what you are looking for. Regardless it should be a damn good ride.
I hope you get what you are looking for. Regardless it should be a damn good ride.
12-07-2002, 03:54 PM
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Re: What dyno numbers do you predict for my MTI ironblock 427? I'd say 470rwhp unlocked/ 485rwhp locked thru cats on a Chicago dyno. I did 471rwhp locked up here, but that was thru a 9" with 4.11's, and on 28" slicks with a locked up 4800 stall. I think that I can do 490rwhp thru a stock rearend and on radials. I'm not sure how much the cats effect it but I'm thinking 5-10 rwhp.