I have been searching for some RWHP numbers that can be expected from the following:
-CNC ported heads with 2.02 / 1.6 valves
-11:1 comp ratio
-Jesel rockers
-Dual valve springs suitable for +6500 RPM
-230/230 @ 0.50" & +.600" lift 112lsa
-Long tube headers with no CATS
-RSI single blade throttle body
-Tune with a VEC-2
Does anyone have any RWHP numbers for a similar setup? Are there 650 to 700 RWHP n.a. Vipers out there?
you cannot get over 600 rw hp on heads and cam upgrade with a stock bottom end. at least to my knowledge it has never been done before. we have seen 590 rw hp with a very agressive solid roller cam. also there is no way to get to 11.0 cr without changing the pistons.
we delivered a heads/cam package on 2006 SRT coupe last week with a very small street cam and it made 543 rw hp. the same guy who owns that car (PeakCompletions) also owns a 96 GTS that has a heads/cam with a solid roller that made 587 rw hp. Both cars have stock bottom ends.
heads/cam is a great bang for the buck, but your overall power gain is limited to less than 600 rw hp.
also there have been a hand full of 650-700+ rw hp NA motors built - but they are extensively built motors with mucho R&D time on head flow, cam selection, tuning, etc. and mucho $.
also there have been a hand full of 650-700+ rw hp NA motors built - but they are extensively built motors with mucho R&D time on head flow, cam selection, tuning, etc. and mucho $.
I feel like a complete moron. I read this as a complete motor build/stroker motor. My old head and cam car made low low 500's.
you cannot get over 600 rw hp on heads and cam upgrade with a stock bottom end. at least to my knowledge it has never been done before. we have seen 590 rw hp with a very agressive solid roller cam. also there is no way to get to 11.0 cr without changing the pistons.
we delivered a heads/cam package on 2006 SRT coupe last week with a very small street cam and it made 543 rw hp. the same guy who owns that car (PeakCompletions) also owns a 96 GTS that has a heads/cam with a solid roller that made 587 rw hp. Both cars have stock bottom ends.
heads/cam is a great bang for the buck, but your overall power gain is limited to less than 600 rw hp.
I love head and cam cars, but with Paxtons as cheap as they are, wouldn't that be the right package for someone looking for 650-700?
you cannot get over 600 rw hp on heads and cam upgrade with a stock bottom end. at least to my knowledge it has never been done before. we have seen 590 rw hp with a very agressive solid roller cam. also there is no way to get to 11.0 cr without changing the pistons.
we delivered a heads/cam package on 2006 SRT coupe last week with a very small street cam and it made 543 rw hp. the same guy who owns that car (PeakCompletions) also owns a 96 GTS that has a heads/cam with a solid roller that made 587 rw hp. Both cars have stock bottom ends.
heads/cam is a great bang for the buck, but your overall power gain is limited to less than 600 rw hp.
Hi John, thx for your response. I guess I ment to have domed pistons in the list as well. Don't take this the wrong way, but why are the LS7 guys now seeing 620+ RWHP on a heads/cam/header car. The heads were just manually cleaned up on the exhaust side. Is it due to the low volume of the Viper and little aftermarket development that has been done on the engine, or is it a design related issue with the engine?
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I am actually debating this same issue myself. I had a LPE427Z that was N/A that I loved so I haven't figured out which way I am going to go with the Viper... All motor or some sort of forced induction.
they are not seeing 620rwhp maybe at the motor but the best I have seen with that set up is about 540 rwhp
Chris --- old vette guy
Actually LG Motorsports just finished a heads/cam/header/EWP C6 Z06 and dyno'd at 623RWHP and 532RWTQ. Not bad for a stock bottom end with stock valvetrain.
the new LS& is a far more efficient motor and its stock heads flow 370+ cfm - over 100 cfm better than a stock Gen 3 Viper head.
we just finished an upgrade on a new Z06 that made 535 rw hp.
What is does the best ported Viper heads with big valves flow? I have not seen any Viper flow numbers anywhere near 350+ CFM @ .600". I wonder what the new Striker heads will flow like with their 2.04" intake valve. Is it just he poor flowing heads, or is the intake manifold/throttle body also a big restriction?
Actually LG Motorsports just finished a heads/cam/header/EWP C6 Z06 and dyno'd at 623RWHP and 532RWTQ. Not bad for a stock bottom end with stock valvetrain.
I think that is BS!. That car makes more hp/cid than Norm's LPE 542, and that is one radical/Fast MOFO!
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Quote:
Originally Posted by jpas
Actually LG Motorsports just finished a heads/cam/header/EWP C6 Z06 and dyno'd at 623RWHP and 532RWTQ. Not bad for a stock bottom end with stock valvetrain.
As usual put it on other dynos.... And I guarantee this is not a street car. Open headers and so on. Most likely sprayed nitrous 5ft in front of the intake on the dyno also...
Chris
He never did try to touch SW out there on the track after talking alot of smack.....
Actually LG Motorsports just finished a heads/cam/header/EWP C6 Z06 and dyno'd at 623RWHP and 532RWTQ. Not bad for a stock bottom end with stock valvetrain.
The LS7 is awesome and the numbers show big potential but that 623rw is way off. Some of the best corvette tuners out there are producing 530-540rw with cam/exhaust/intake. When a guy from "South Wylie, TX" claims to pick up almost another 100rwhp with exhaust port work and an EWP, I think he might need to clean the cow shit out of his dyno.
Stock = 450-460rwhp
+ Cam / Headers / Intake = 525-535rwhp
+ minor exhaust port work / Electric Water Pump = 623rwhp
Oh course.. The 623rw was with "some other special LGM touches"...
Scott
Time will tell how much HP these motors will make N/A reliable and street legal. I really don't trust any of these numbers until the package is proven on customers car and shown to be reliable. AND duplicated on mutiple car and dyno's. That being said, the LS7 motor does look promising in N/A form. As far as forced induction and ultimate power, the Viper destroys the Corvette.
like i'd read about the new z it is pretty well tweaked from the general.
cam, heads, header and exhaust + to get 70 hp looks to me like your going to spend $6,000-10,000 for that amount of hp, does that seem like not a lot of return on you HP dollar?
like i'd read about the new z it is pretty well tweaked from the general.
cam, heads, header and exhaust + to get 70 hp looks to me like your going to spend $6,000-10,000 for that amount of hp, does that seem like not a lot of return on you HP dollar?
i think it's a lot cheaper than that to mod a zo6, sounds like the price to mod a viper.
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