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425 RWHP with a total duration of 440, possible?

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Old 02-26-2003, 05:27 PM
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Default Re: 425 RWHP with a total duration of 440, possible?

That would be totally possible to accomplish. Over two years ago I made 402 rwhp with stock heads and a B1 cam through an M6 and 17X11s with 315s out back. With today's faster ramp cams (a 223/217 maybe ground on the old man cam lobes with a 116 LSA would be my choice per your restrictions) and a set of nice heads, 430 rwhp would be no problem.
Old 02-26-2003, 05:32 PM
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Default Re: 425 RWHP with a total duration of 440, possible?

I know I don't meet the 440 duration qualification, but maybe I can get an "honorable mention"...

Check out my post "Dyno Results", I'll give it a TTT so it's close to this post.

See my post for details, but I just made 410/415 in an unlocked A4 with 222/224 cam, through LS1 intake/EGR and cats. Lucky me. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

AAP heads are quite a piece of work. <img border="0" alt="[burn out]" title="" src="graemlins/gr_burnout.gif" />

I feel really proud knowing that you guys (who are pretty much the top of the game in my book) are impressed with my numbers. <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />

LS6 intake is in the works soon, and a dyno with the converter locked I just might hit the 425 mark. <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />

Oh, and as I understand it, the only thing different about the LS6 block is there is something different about the windage tray that's more effecient in scavenging oil from the crank... Someone chime in if you know specifics.

Happy driving,
Rob (Bad30th)

<small>[ February 26, 2003, 05:51 PM: Message edited by: Bad30th ]</small>
Old 02-26-2003, 06:39 PM
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Default Re: 425 RWHP with a total duration of 440, possible?

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Colonel:
<strong> 435 RWHP with a B1 cam and a Moser 4.10 rearend is VERY impressive if all it had was bolt-ons and heads/cam. 435 with aftermarket pistons, rods, etc. and through a stock rearend.. well, that would be impressive enough but this is astounding. <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />

Can you verify that bolt-ons, heads/cam were the ONLY mods? And that the dyno results were corrected on a Dynojet?


</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Colonel - yes it was all the bolt ons - ported TB, pulleys, LS6 intake, Shandy Price ported heads (very similar to an MTI head), dynatech LT headers, random tech 3" intermediate pipe with cutout, stock DS, 91/92 pump gas, ls1 edit (when he was just learning it i believe), etc etc. it was very much on a corrected dynojet (and this dyno and operator are honest, i made 385 RWHP with my big cam and 6 speed car). i can promiss you as i know the owner and car VERY well. in fact just call Mark - he is a sponsor after all <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> here is his page for his car with mods (it hasnt been updated in a while). http://www.geocities.com/smoke_ur_50/index.html
he also ran a very consistent 122 mph in a not so light car (about 3450 lbs) here in tracks way above sea level in KC.

<small>[ February 26, 2003, 06:46 PM: Message edited by: gator's 99TA ]</small>
Old 02-26-2003, 07:25 PM
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Default Re: 425 RWHP with a total duration of 440, possible?

Around a 220/220 cam with about .600 lift with ls6 heads for their benefits in higher lift cams and a 110lsa for more peak power. Retard the cam about 4-6 degrees and let it roll. That is what I would try. Free flowing exhaust is a must have for those numbers to happen, I mean real free flowing like a mufflex 4" with mufflex y or true 3" duals with an x.
Old 02-26-2003, 09:20 PM
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Default Re: 425 RWHP with a total duration of 440, possible?

COLONEL:

For what its worth, all of the principals at Cartek and their customers, have been putting out these VERY IMPRESSIVE H/C numbers on complete stock LS1 and LS6 bottom ends (anywhere from 449rwhp to thier new packages putting out 470+rwhp). The only modification from what i have been told by some of the major players at Cartek, is that the pistons are fly cut to allow proper piston/valve clearance, but the pistons and bottom end our otherwise 100% stock, with of course stock displacement (346cid).

No doubt quite an accomplishment, if not a little hard to believe, but no evidence has been produced so far to the contrary and i myself believe them. Also, more importantly, these high dyno numbers on Cartek's newest H/C packagages (over the last year) have been backed up at independant tracks and put cars consisistently in the very low 11s and a couple in the high 10s (C5 Pig and Brent's 02 Z06), with several more knocking on the door (Billy 002kFrc, etc.)

MTI 427 C5 Roadster

<small>[ February 26, 2003, 09:27 PM: Message edited by: MTI 427 C5 Roadster ]</small>
Old 02-26-2003, 11:40 PM
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Default Re: 425 RWHP with a total duration of 440, possible?

Cool, lot's of input. <img border="0" title="" alt="[Cool]" src="gr_images/icons/cool.gif" />

Ok, I see in the pole that 3 people say it's already been done but I haven't seen it mentioned yet. So, you three that say it's been done...where's the beef? Let's hear some details!
Old 02-27-2003, 12:57 AM
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Default 425 RWHP with a total duration of 440, possible?

I'm speaking hydraulic cam, 346ci, and a stock bottom end. Just bolt-ons, heads, and cam.

Call this cam a 216/224, a 224/216, or a 220/220...it doesn't matter. Just so long as the total duration is 440 or less.

NO dyno tricks! NO uncorrected numbers!
Old 03-09-2003, 05:50 PM
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Default Re: 425 RWHP with a total duration of 440, possible?

C'mon, who did it already!?!
Old 03-10-2003, 08:38 AM
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Default Re: 425 RWHP with a total duration of 440, possible?

Yeah Gator is right. About a year and a half ago we had these heads put on with a B1 cam and made 428rwhp and 400rwtq..then LS1 edit came along and it went to 435rwhp and 408rwtq tuned in. Definitely a fun driver around town...even better never did have the throttle body drilled out. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

I have had a porter flowing these heads and trying to duplicate the midlift numbers along with getting rid of some of the higherlift stumble for some Stage 2 heads that we are coming out with that should put out awesome numbers.

I think the car would have only lost 1-2hp if we had slimmed the duration down to 220/220.

I'm thinking about instead of dumping alot of cash on a superstroker, that I should just build another 346ci bottom end with eagle rods and some pistons with valve reliefs, some added compression and a small cam at first then switch to a huge *** cam to see what happens since I will have unlimited access to a dyno now. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

Didn't Big Mike have a B1 back in the day and make 43xrwhp also?
Old 03-10-2003, 01:17 PM
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Default Re: 425 RWHP with a total duration of 440, possible?

colonel, those were def LS1 heads and 100% GM LS1 pistons, rods, crank, etc. i love the B1 cam numbers and wish sometimes (ok a lot of the time) that i wish i went with that cam since it was such a great overall performer. also the big cams only make more power from 6000+
Old 03-10-2003, 06:00 PM
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Default Re: 425 RWHP with a total duration of 440, possible?

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Colonel:
<strong> Man, that's awesome for a little 221/221 cam! <img border="0" title="" alt="[Cool]" src="gr_images/icons/cool.gif" /> And just what I'd want out of a daily driver. Those were obviously some awesomely ported heads.

Just to reiterate, these were LS1 heads, the pistons, rods, and crank were stock. Correct?

I'd like to see what could be done with LS6 heads and a stock rearend with stock gears. 460-465 RWHP? </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I hate to be the doubter, but what's the secret here? Was it all in the head work? If that's true, that's amazing for a B1..
Old 03-10-2003, 10:03 PM
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Default Re: 425 RWHP with a total duration of 440, possible?

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Didn't Big Mike have a B1 back in the day and make 43xrwhp also?</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Oh yeah! Big Mike's '99 Camaro SS made 434.9 RWHP & 413.4 RWTQ on January 27, 2001! I bought his MTI S2 heads last summer and now with my B1 cam I make 424RWHP/400RWTQ through complete exhaust <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
Old 03-11-2003, 12:57 AM
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Default Re: 425 RWHP with a total duration of 440, possible?

Man, that's awesome for a little 221/221 cam! <img border="0" title="" alt="[Cool]" src="gr_images/icons/cool.gif" /> And just what I'd want out of a daily driver. Those were obviously some awesomely ported heads.

Just to reiterate, these were LS1 heads, the pistons, rods, and crank were stock. Correct?

I'd like to see what could be done with LS6 heads and a stock rearend with stock gears. 460-465 RWHP?




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