what are the highest rwph and tq from heads/cam setups???

[Moundir]

I heard that someone on this board has gotten almost 600rwhp with stock compression on a heads/cam setup I would like to know from everyone (vendors included)on what the highest #s you have seen and on what compression? Also who's setup is this? and with what modds? I'm thinking heads/cam with a Roe charger. Ever since I've seen Utah's dyno graph I fell in love with that setup

 

[Paolo Castellano]

I heard that someone on this board has gotten almost 600rwhp with stock compression on a heads/cam setup I would like to know from everyone (vendors included)on what the highest #s you have seen and on what compression? Also who's setup is this? and with what modds? I'm thinking heads/cam with a Roe charger. Ever since I've seen Utah's dyno graph I fell in love with that setup

Mike, from your videos, I would say you are one crazy **** behind the wheel! My best recommendation would be to go with the Sean Roe setup you like with the stock heads and cam==> Get used to it for a season and then go for broke with heads and cam/etc... Utah's dyno graph was impressive to say the least!

 

[Tom Welch]

Expect 510-525 daily drivable rear wheel horsepower from our heads and cam package on an otherwise stock engine. We offer different cam grinds for natrually aspirated or NOS/Forced Air Induction systems.

Please feel free to check our website for flow data, performance results, pricing and our performance guarantee.

Thanks and good luck.

Tom

 

[Moundir]

Paolo you have a great point, I was thinking of doing it in 2 steps, but cant decide which is better to do first If it is true that I can get near 600rwph Na with stock compression and some sort of driveability I will go for it lol.

 

[LTHL VPR]

APEX's LETHAL 650 package primarily consists of heads, cams, and rockers. There are many other parts included to enable the car to handle the power reliably, but the dyno's I have seen have been in the 550-575rwhp range with cats, etc...
You can definitely get more power than this, but you will sacrifice drivability, low end response (power and torque), and overall throttle response.
-Wayne

 

[PETSN8K]

I know a couple of people who are in the area of 550-560rwhp. I haven't heard of any body with 600rwhp and drivability without stroking the motor.

 

[Martin D]

Hey Mike,

I have heard of cars close to 600 with a great heads and cam setup - I would think that if you get with someone like H M S or RSI or TNT... that really has experience testing head and cam combinations, you can get close to that goal. You will want heads that flow at LEAST 280 (several tuners now offer GEN II heads flowing 305+). The limiting factor that you have is stock compression. My guess, is that even if you do all the associated bolt on's, you will not get more than 550 with stock compression. Good luck!

Regards,

 

[Paolo Castellano]

Paolo you have a great point, I was thinking of doing it in 2 steps, but cant decide which is better to do first If it is true that I can get near 600rwph Na with stock compression and some sort of driveability I will go for it lol.

Mike, If you already have the headers and exhaust, I would go with the Roe Supercharger first since it is the one you want anyway. You should make 600+ RWHP and RWTQ throughout the entire RPM range.... It will be like adding quite a few cubic inches if you know what I mean. I think all the tuning for that setup is all worked out. Drive that for the next year or so and see what Sean and others come up with for the heads/cam/fuel management aspect and then take it from there. I really think it all comes down to exactly what you want to do with your car. You should test drive/go for a ride in a heads and cam, Roe supercharger car, a centrifugal blower car/etc... Hell, you could come to Md in the next week or so and go for a ride in my car as well as a few of the other Heffner cars since you live in New York! You're not that far away! We could do some cool videos!

 

[Moundir]

Wyane I assume the 550-575 is with bumped compression??

Martin you maybe right about the compression issue coming into play.

Paolo, I do want to drive each of these cars, but who is crazy enough to let me drive after seeing my videos lol.
I might just take you up on that offer to come down to Md as I wanted to visit a friend of mine over there. I will bring the camera

 

[Maverick The Electrician]

570 RWHP with stock compression is the norm.

 

[Qualitywires.com]

Albert,

What do you have to get to the 9's in your beast? WOW!

 

[Paolo Castellano]

Wyane I assume the 550-575 is with bumped compression??

Martin you maybe right about the compression issue coming into play.

Paolo, I do want to drive each of these cars, but who is crazy enough to let me drive after seeing my videos lol.
I might just take you up on that offer to come down to Md as I wanted to visit a friend of mine over there. I will bring the camera

Mike, I did not need to drive Gary's Heffner Viper to know that was what I needed to have! Most likely a ballz out ride in the passenger seat should suffice instead of internet conjecture/opinions. I will let you know when I get there.

 

[Jack B]

Albert:

Do you make 570 rwhp NA with a NOS cam?

 

[GTS-R 001]

With everything in my sig except the Roe blower 614rwhp and 644rwtq

 

[SMCBUILDERSINC]

DiD you increase the compression? What was the cfms after the port job on the heads, 280,305?

I often wondered how much the parts costed to replace cast pistons with forged if you did the work yourself, any ideas?

 

[SMCBUILDERSINC]

One more question, What did greg charge you for the head work and can you give some more details about what was done to them?

 

[Moundir]

With everything in my sig except the Roe blower 614rwhp and 644rwtq

Now this is what I want more info please..

 

[slaughterj]

Expect 510-525 daily drivable rear wheel horsepower from our heads and cam package on an otherwise stock engine. We offer different cam grinds for natrually aspirated or NOS/Forced Air Induction systems.

From what that sounds like, it seems one should decide whether to get supercharged first, then decide on a heads/cam package, else they'd have to change? Am I reading this right? Why would that be?

 

[onerareviper]

Moundir,

For maximum results, a competent tuner will need to know what you are planning (SC, Turbo, Nitrous, Stroker, etc...) to recommend the right head/cam combo. For example, you may have a head/cam package that performs perfectly N/A, but add forced induction and it may not do so well - or vice-versa. Your going to be better off - IMHO - to do the heads/cam/SC at the same time - for optimal performance. Or at least have a solid plan from start to finish. Think in term of the whole package, not 'I want the best heads/cam, then I'll slap a blower on top of it...'

My .02

 

[Fishtail]

One of the reasons you see everybody going the supercharger route is because you don't need to do heads and cam. You do the supercharger first and then if you want more power you go with the heads and cam packages.
If you don't mind me asking...how much does the heads and cam package cost?

 

[Maverick The Electrician]

Jack, we made 571 RWHP with heads and cam. The car was set up with race gas in the tank for nitrous also very cold plugs. Maybe could have picked it up a little on motor, but thats not what were into.

 

[Fishtail]

Albert, 571 rwhp is a healthy heads and cam package especially with a nitrous tuned car.

-Lou

 

[Maverick The Electrician]

hope to get some more power soon with some computer work. The car has been running pig rich.

 

[Moundir]

Moundir,

For maximum results, a competent tuner will need to know what you are planning (SC, Turbo, Nitrous, Stroker, etc...) to recommend the right head/cam combo. For example, you may have a head/cam package that performs perfectly N/A, but add forced induction and it may not do so well - or vice-versa. Your going to be better off - IMHO - to do the heads/cam/SC at the same time - for optimal performance. Or at least have a solid plan from start to finish. Think in term of the whole package, not 'I want the best heads/cam, then I'll slap a blower on top of it...'

My .02

I agree with you a 1000% The hardest thing is deciding what to do, blower, heads/cam or both

 

[jp]

Albert, what ET:s did you get without Nitrous?
/JP

hope to get some more power soon with some computer work. The car has been running pig rich.