L92 head dyno in GM High Tech
Originally Posted by FAST LS1
Will you be doing any long block assemblies with the new CNC L92 heads, and your 418ci L92 stroker short block?
Good Stuff....glad to see some L92 dyno results starting to roll in. I'm sure alot more independent data is on the way. The chassis dyno numbers will be interesting and give even more insight to their effectiveness. I would mention that I do feel a large portion of the gains in this particular test were from replacing the LS2 intake which has been proven time and again to be very ineffective (I assume the baseline results were using an LS2 intake due to it being a crate engine).
As a point of interest, here are the results of a recent (similar) test conducted by PHR (Popular Hot Rodding). They also started with a brand new bone stock 6.0 ltr. LS2 crate engine and with the addition of a set of headers produced 450 ft/lbs of TQ and 472 HP on a SuperFlow 902 dyno (reads the same as a 901...a few new bells and whistles).
With stock compression (10.9 to one) and the addition of a similar cam to the test above (actually slightly smaller at 230/232), a set of out of the box AFR 205's and a FAST 90, the engine churned out an additional 55 ft/lbs of TQ and an additional 101 HP. Final numbers were 573 HP / 505 TQ
Here is the online version of the story (with alot more details) that hit the newstand a few months ago....Happy reading
http://www.popularhotrodding.com/tec..._modification/
Tony M.
As a point of interest, here are the results of a recent (similar) test conducted by PHR (Popular Hot Rodding). They also started with a brand new bone stock 6.0 ltr. LS2 crate engine and with the addition of a set of headers produced 450 ft/lbs of TQ and 472 HP on a SuperFlow 902 dyno (reads the same as a 901...a few new bells and whistles).
With stock compression (10.9 to one) and the addition of a similar cam to the test above (actually slightly smaller at 230/232), a set of out of the box AFR 205's and a FAST 90, the engine churned out an additional 55 ft/lbs of TQ and an additional 101 HP. Final numbers were 573 HP / 505 TQ
Here is the online version of the story (with alot more details) that hit the newstand a few months ago....Happy reading
http://www.popularhotrodding.com/tec..._modification/
Tony M.
Wow, comparing what a cam, AFR's and a FAST do to "out of the box" intake and heads from GM is crazy. You can get the cam, heads, intake, springs, etc for 2k, under what a set of AFR 205's go for.
Originally Posted by Tony Mamo @ AFR
Good Stuff....glad to see some L92 dyno results starting to roll in. I'm sure alot more independent data is on the way. The chassis dyno numbers will be interesting and give even more insight to their effectiveness. I would mention that I do feel a large portion of the gains in this particular test were from replacing the LS2 intake which has been proven time and again to be very ineffective (I assume the baseline results were using an LS2 intake due to it being a crate engine).
As a point of interest, here are the results of a recent (similar) test conducted by PHR (Popular Hot Rodding). They also started with a brand new bone stock 6.0 ltr. LS2 crate engine and with the addition of a set of headers produced 450 ft/lbs of TQ and 472 HP on a SuperFlow 902 dyno (reads the same as a 901...a few new bells and whistles).
With stock compression (10.9 to one) and the addition of a similar cam to the test above (actually slightly smaller at 230/232), a set of out of the box AFR 205's and a FAST 90, the engine churned out an additional 55 ft/lbs of TQ and an additional 101 HP. Final numbers were 573 HP / 505 TQ
Here is the online version of the story (with alot more details) that hit the newstand a few months ago....Happy reading
http://www.popularhotrodding.com/tec..._modification/
Tony M.
As a point of interest, here are the results of a recent (similar) test conducted by PHR (Popular Hot Rodding). They also started with a brand new bone stock 6.0 ltr. LS2 crate engine and with the addition of a set of headers produced 450 ft/lbs of TQ and 472 HP on a SuperFlow 902 dyno (reads the same as a 901...a few new bells and whistles).
With stock compression (10.9 to one) and the addition of a similar cam to the test above (actually slightly smaller at 230/232), a set of out of the box AFR 205's and a FAST 90, the engine churned out an additional 55 ft/lbs of TQ and an additional 101 HP. Final numbers were 573 HP / 505 TQ
Here is the online version of the story (with alot more details) that hit the newstand a few months ago....Happy reading
http://www.popularhotrodding.com/tec..._modification/
Tony M.
Nate
Originally Posted by Nate_Taufer
I'd say the L92 setup does more than enough for the price.
Nate
Nate
The L92 set-up represents alot of value. Just thought the info I shared was of interest seeing the combo's were so similar.
Tony
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This is fun...fyi i believe the article said the baseline was with cnc ported ls2 heads. Just think what this means. The new baseline for 364 na engines with mid level cams, 11 to 1 comp, and good exhaust systems is going to be 500 rwhp and much more as people find the optimum valve timing. I am glad I haven't gone the FI route as I am getting old and I no longer need to go over 200. Chuck
Originally Posted by 67camaro
how much hp/tq do you think that .7 compression is worth in that combo?
Nate
looks like ill be giving texas speed a call when i need my new motor setup.
thats a hell of a price for some bad *** heads, and i can tell people its got stock heads and intake, lol
thats a hell of a price for some bad *** heads, and i can tell people its got stock heads and intake, lol
Originally Posted by JDP
thats a hell of a price for some bad *** heads
Originally Posted by dhdenney
I'm hoping that when some more people get on the L92 porting bandwagon that some competition can drive the price down even more! Although I have to admit it would be pretty low to get much lower than $1500 for assembled big block caliber heads.
Originally Posted by BlackHawk T/A
I can see them coming down a few hundred. I expect Patriot to be not far behind.
Originally Posted by Zach@Texas-Speed
Those are great gains for out of the box heads!!
Imagine the gains with a set of the PRC CNC L92 heads for 1499.99
Imagine the gains with a set of the PRC CNC L92 heads for 1499.99
BTW - have you flowed them yet?
Teching In
Joined: Oct 2006
Posts: 14
Likes: 0
Originally Posted by DrkPhx
Well, we can imagine all we want. But how about throwing a pair on a 402 or 408 and dynoing them?!
BTW - have you flowed them yet?
BTW - have you flowed them yet?