Top 5 LS1 stage2 heads
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Re: Top 5 LS1 stage2 heads JAMMASTERJ There are many guys including myself that are running CARTEK heads in our FBODY, I know of 7 or 8 guys making around 420 on stage 2 heads and 430-450 on ls6 heads. We love them as much as the corvette guys they just have sold more to them thats all.
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From: S.a.m-Houston
Re: Top 5 LS1 stage2 heads </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Johns98Z28:
<strong> Here's my Absolute Speed Stage II Set up:
LS1 Castings ('98)
209cc Int Runners
milled for 10.8:1 comp
Manley Pro Flow 2.02/1.578 valves
Flow #'s, Exh #'s without a flow tube:
Lift Int Exh
200 159 107
300 212 146
400 267 193
450 284 203
500 296 217
550 301 220
600 307 223
Dyno #'s are below
Thanks, John. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Who flowed those heads for you? Most likely the person you bought them from. If those heads flowed 307 they would support about 600-620 hp with a good solid roller. A guy bought a set of heads that supposedly flowed 340 (LS6) and on our bench they flowed 300. Not saying your heads don't flow that, but just know that you should be able to make a little more power with that much flow IMO.
Nobody mentioned SAM heads, but since we don't sell them and just run em I guess that's why. Our orange car heads flow 340 and it makes 692 hp.
<strong> Here's my Absolute Speed Stage II Set up:
LS1 Castings ('98)
209cc Int Runners
milled for 10.8:1 comp
Manley Pro Flow 2.02/1.578 valves
Flow #'s, Exh #'s without a flow tube:
Lift Int Exh
200 159 107
300 212 146
400 267 193
450 284 203
500 296 217
550 301 220
600 307 223
Dyno #'s are below
Thanks, John. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Who flowed those heads for you? Most likely the person you bought them from. If those heads flowed 307 they would support about 600-620 hp with a good solid roller. A guy bought a set of heads that supposedly flowed 340 (LS6) and on our bench they flowed 300. Not saying your heads don't flow that, but just know that you should be able to make a little more power with that much flow IMO.
Nobody mentioned SAM heads, but since we don't sell them and just run em I guess that's why. Our orange car heads flow 340 and it makes 692 hp.
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From: NY
Re: Top 5 LS1 stage2 heads Chris ARE,that M6 rwhp loss sounds right to me.I cant see how some use a percentage which multiplies as you make more HP.
It will be interesting when Tomtheroofer[TTR]gets his flywheel HP and then dyno's thru auto for a comparo.
It will be interesting when Tomtheroofer[TTR]gets his flywheel HP and then dyno's thru auto for a comparo.
Re: Top 5 LS1 stage2 heads These are the heads I would consider buying based on proven results.
SRP, TEA, MTI, GTP, & LPE
These are heads I would consider with additional research and seeing more proven results.
LG Motorsports
Cartek
SRP, TEA, MTI, GTP, & LPE
These are heads I would consider with additional research and seeing more proven results.
LG Motorsports
Cartek
Re: Top 5 LS1 stage2 heads When i said 600 rwhp from the Sam motor that was just a conservative guess.I dont do the percentage thing either.If that car has a Jerico that would take even less to turn.I think
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From: S.a.m-Houston
Re: Top 5 LS1 stage2 heads </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by jleews6:
<strong> 695hp even if it si at the crank it might still put down 600 to the wheels.Even if it is 400+ cubes that is alot of power.
SAM. How high are you turnin that thing ?7500? </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">It actually turns a little over 8,000. It has excellent heads and valvetrain. SS valves and Jesel. Jud just ain't scared to turn it it up. Good motors make power past peak, it's a sign of good heads.
<strong> 695hp even if it si at the crank it might still put down 600 to the wheels.Even if it is 400+ cubes that is alot of power.
SAM. How high are you turnin that thing ?7500? </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">It actually turns a little over 8,000. It has excellent heads and valvetrain. SS valves and Jesel. Jud just ain't scared to turn it it up. Good motors make power past peak, it's a sign of good heads.
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Re: Top 5 LS1 stage2 heads </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by SAM81:
<strong> The dyno graph posted by mrb00formula is not accurate. Where did that come from?? </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">The dyno I posted in this thread is accurate!
The the first dyno was not SAE, this one is.
FYI- the difference between "Actual" and "SAE" was nominal.. like maybe 3-5hp max.
<strong> The dyno graph posted by mrb00formula is not accurate. Where did that come from?? </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">The dyno I posted in this thread is accurate!
The the first dyno was not SAE, this one is.
FYI- the difference between "Actual" and "SAE" was nominal.. like maybe 3-5hp max.
Re: Top 5 LS1 stage2 heads </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Johns98Z28:
<strong> Here's my Absolute Speed Stage II Set up:
LS1 Castings ('98)
209cc Int Runners
milled for 10.8:1 comp
Manley Pro Flow 2.02/1.578 valves
Flow #'s, Exh #'s without a flow tube:
Lift Int Exh
200 159 107
300 212 146
400 267 193
450 284 203
500 296 217
550 301 220
600 307 223
Dyno #'s
404.0 RWHP
398.3 RWTQ
Thanks, John. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Absolute Speed
Stage 2 Porting
STAGE 2
LIFT- INT- EX
200- 151- 109
300- 213- 149
400- 271- 192
450- 280- 204
500- 292- 219
550- 297- 222
600- 303- 225
If I had long-tubes, no cats, and the slightly larger Thunder 224 cam then I would presume I would have gotten about 5-7 more HP and maybe 10-15 in the TQ dept. However.. both of our cars will not be slouches on the track, thanks to Jay's Absolute Speed Heads! <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
Both John and I posted our numbers.. now lets see some of your dyno print-outs. Put up or shut-up, plain and simple. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
<strong> Here's my Absolute Speed Stage II Set up:
LS1 Castings ('98)
209cc Int Runners
milled for 10.8:1 comp
Manley Pro Flow 2.02/1.578 valves
Flow #'s, Exh #'s without a flow tube:
Lift Int Exh
200 159 107
300 212 146
400 267 193
450 284 203
500 296 217
550 301 220
600 307 223
Dyno #'s
404.0 RWHP
398.3 RWTQ
Thanks, John. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Absolute Speed
Stage 2 Porting
STAGE 2
LIFT- INT- EX
200- 151- 109
300- 213- 149
400- 271- 192
450- 280- 204
500- 292- 219
550- 297- 222
600- 303- 225
If I had long-tubes, no cats, and the slightly larger Thunder 224 cam then I would presume I would have gotten about 5-7 more HP and maybe 10-15 in the TQ dept. However.. both of our cars will not be slouches on the track, thanks to Jay's Absolute Speed Heads! <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
Both John and I posted our numbers.. now lets see some of your dyno print-outs. Put up or shut-up, plain and simple. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
Re: Top 5 LS1 stage2 heads </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif"> Who flowed those heads for you? Most likely the person you bought them from. If those heads flowed 307 they would support about 600-620 hp with a good solid roller. A guy bought a set of heads that supposedly flowed 340 (LS6) and on our bench they flowed 300. Not saying your heads don't flow that, but just know that you should be able to make a little more power with that much flow IMO.
</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">The Orange car made 695HP more than likely to the flywheel not rear wheel, solid roller cam, definately not stock cubes or stock rotating assembly, bet it won't run on pump gas either. That isn't a good comparison. Put his heads on your engine and I bet it would make a huge hp increase. Put your heads on his current setup and I bet the hp won't go up that much...Come on be realistic here....
</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">The Orange car made 695HP more than likely to the flywheel not rear wheel, solid roller cam, definately not stock cubes or stock rotating assembly, bet it won't run on pump gas either. That isn't a good comparison. Put his heads on your engine and I bet it would make a huge hp increase. Put your heads on his current setup and I bet the hp won't go up that much...Come on be realistic here....
Re: Top 5 LS1 stage2 heads 695hp even if it si at the crank it might still put down 600 to the wheels.Even if it is 400+ cubes that is alot of power.
SAM. How high are you turnin that thing ?7500?
SAM. How high are you turnin that thing ?7500?
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From: new england
Re: Top 5 LS1 stage2 heads With good rod bolts, oil pump, and valvetrain, 8000 rpm is a realistic shift point. Guys the LS1 is much sturdier by design than factory small block chevys, and they will turn 8000 no sweat with proper prep. People are afraid of the unknown but that will change <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
Re: Top 5 LS1 stage2 heads i have r.g.r st2heads.i'm not saying my heads are the best but i only paid $1,600 for them. they SEEM to have all the options the other heads have. i dynoed at 424.1rwhp and 407.4rwtq(i dont even have all the boltons and have a 12boltw/gears costing me some power)when i see alot of other peoples dyno # their the hp is there but the tq is only around 380 or 390tq.over all i'm happy with the heads and i'm turning some deep 11sec time slips too.
Re: Top 5 LS1 stage2 heads </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by mike c.:
<strong> i have r.g.r st2heads.i'm not saying my heads are the best but i only paid $1,600 for them. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I paid ~$1300 for stage 2 heads which perform well. No regrets here! <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
<strong> i have r.g.r st2heads.i'm not saying my heads are the best but i only paid $1,600 for them. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I paid ~$1300 for stage 2 heads which perform well. No regrets here! <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
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From: S.a.m-Houston
Re: Top 5 LS1 stage2 heads </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by mrb00formula:
<strong> </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by SAM81:
<strong> The dyno graph posted by mrb00formula is not accurate. Where did that come from?? </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">The dyno I posted in this thread is accurate!
The the first dyno was not SAE, this one is.
FYI- the difference between "Actual" and "SAE" was nominal.. like maybe 3-5hp max. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">It doesn't matter how you measure the hp. It could have said 1000 hp and I couldn't tell you otherwise. The graph does not accurately portray hp and tq at the correct level vs. rpm. Anyone who runs a dyno could tell you this.
<strong> </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by SAM81:
<strong> The dyno graph posted by mrb00formula is not accurate. Where did that come from?? </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">The dyno I posted in this thread is accurate!
The the first dyno was not SAE, this one is.
FYI- the difference between "Actual" and "SAE" was nominal.. like maybe 3-5hp max. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">It doesn't matter how you measure the hp. It could have said 1000 hp and I couldn't tell you otherwise. The graph does not accurately portray hp and tq at the correct level vs. rpm. Anyone who runs a dyno could tell you this.