427 L92 heads
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From: mn.
427 L92 heads I finished this project almost 2 years ago and I so burnt out with cars I haven't really played with this car since I finished it. I'm now starting to get into it again, and was wondering what the top engine builders are getting out of hydraulic cam street engines now days. Mine after handing making an intake and completly working these L92 heads made 701 flywheel and 592.6 rwhp. tune by Andy at Dyno Tune. Thanks
I finished this project almost 2 years ago and I so burnt out with cars I haven't really played with this car since I finished it. I'm now starting to get into it again, and was wondering what the top engine builders are getting out of hydraulic cam street engines now days. Mine after handing making an intake and completly working these L92 heads made 701 flywheel and 592.6 rwhp. tune by Andy at Dyno Tune. Thanks
.
Thread Starter
Teching In
Joined: Dec 2006
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From: mn.
6.0 iron block, oversized engine, billet everything, intake was made by TPIS and lower half. Brian from Hi-tech reworked the heads, intake and cam. This was about an on and off 2 year project with 3 differnet heads used, 8 cams and 4 intakes, with 50-60 engine dyno pulls. I'll see if I can find someone to scan the dyno graph.
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I finished this project almost 2 years ago and I so burnt out with cars I haven't really played with this car since I finished it. I'm now starting to get into it again, and was wondering what the top engine builders are getting out of hydraulic cam street engines now days. Mine after handing making an intake and completly working these L92 heads made 701 flywheel and 592.6 rwhp. tune by Andy at Dyno Tune. Thanks
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From: Gateway International Raceway
6.0 iron block, oversized engine, billet everything, intake was made by TPIS and lower half. Brian from Hi-tech reworked the heads, intake and cam. This was about an on and off 2 year project with 3 differnet heads used, 8 cams and 4 intakes, with 50-60 engine dyno pulls. I'll see if I can find someone to scan the dyno graph.
You have all those combos and dyno graphs...that is f....g R&D!!!
You need to post all the graphs and combos/heads/cams/intakes....
Please!
A legitimate 402 making that much power on true 93 octane is a little hard to believe unless it just had some crazy canted valve heads with a set of ITB's that were tuned to rev to 9K rpm.
Just curious on the setup and how radical it was. What did it make to the ground?
A legitimate 402 making that much power on true 93 octane is a little hard to believe unless it just had some crazy canted valve heads with a set of ITB's that were tuned to rev to 9K rpm.
A legitimate 402 making that much power on true 93 octane is a little hard to believe unless it just had some crazy canted valve heads with a set of ITB's that were tuned to rev to 9K rpm.
I just noticed you posted in that same thread!
Just curious on the setup and how radical it was. What did it make to the ground?
A legitimate 402 making that much power on true 93 octane is a little hard to believe unless it just had some crazy canted valve heads with a set of ITB's that were tuned to rev to 9K rpm.
A legitimate 402 making that much power on true 93 octane is a little hard to believe unless it just had some crazy canted valve heads with a set of ITB's that were tuned to rev to 9K rpm.
I know in a PM you said the compression was well over 12-1, how high was it?Are you still using TFS heads in your hyd roller combinations?
Is that the same ITB intake that made 710 on the 468?
Last edited by Brian Tooley Racing; Sep 16, 2010 at 04:35 PM.
Just curious on the setup and how radical it was. What did it make to the ground?
A legitimate 402 making that much power on true 93 octane is a little hard to believe unless it just had some crazy canted valve heads with a set of ITB's that were tuned to rev to 9K rpm.
A legitimate 402 making that much power on true 93 octane is a little hard to believe unless it just had some crazy canted valve heads with a set of ITB's that were tuned to rev to 9K rpm.
Brian-there is no doubt that the TFS 235's are great heads-we have proven them several times over.The compression was high enough to make 700hp in a 402.I still use some TFS heads-we recently used them on a 427 than made 650hp with a 230's cam and a FAST 92.
the itb was the same as used on the HKE 468.
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From: mn.
Sorry guys, I just picked up my 2011 GT500 that I have been driving around for the last couple of days. We filled up the heads and intake with epoxy to increase port velocity, but you have to be very carefull not to make the air become turbulent. This will kill power. I'll be honest it was amazing the difference this made in the engine, I have two blown cobra's and this engine pulls like my blower cars. It still made 490 rwtq. but with a 6 speed and 3:90 gears who cares!! The cam is LARGE.. duration 257 intake 264 exhaust
.664 lift intake .644 exhaust on a 114 lobe separation. With the solid torque arm and this cam, it's alittle large for daily driving but great for the weekends. Yes compression is 12/5 - 13 to1. Stock GM rockers, we did find some power difference in trying different valve job angles. Stock oil pan setup. I really think a dry sump would be worth 15-30 more hp. I have done a ton of work with this LS base engines and I really like the Trick flow heads, I built a 2000 SS for a guy with these 205 heads and loved them, but this was 2 years ago. What I took from all of this is yes you have to have a good flowing set of heads, but I'll take GREAT port velocity over HUGE flow heads any day. Peak power was 7100 rpm's
.664 lift intake .644 exhaust on a 114 lobe separation. With the solid torque arm and this cam, it's alittle large for daily driving but great for the weekends. Yes compression is 12/5 - 13 to1. Stock GM rockers, we did find some power difference in trying different valve job angles. Stock oil pan setup. I really think a dry sump would be worth 15-30 more hp. I have done a ton of work with this LS base engines and I really like the Trick flow heads, I built a 2000 SS for a guy with these 205 heads and loved them, but this was 2 years ago. What I took from all of this is yes you have to have a good flowing set of heads, but I'll take GREAT port velocity over HUGE flow heads any day. Peak power was 7100 rpm's
I remember running across the build thread a few months back - https://ls1tech.com/forums/dynamomet...d-700-1hp.html
I just noticed you posted in that same thread!
I just noticed you posted in that same thread!
