crimlwC6

I've been researching cams again but I have a question I have not seen. What cam can I do on a ls1 with only changing the springs that would be best for road racing. The car has lt headers with no cats, zo6 intake , and bigger throttle body and a custom intake. I dont want more than 30 to 40 hp for classing purposes but want torque and midrange. The engine has 90k miles and is only a track car that weighs a bit under 2800. Made 317/328 when dynoed and tuned before the intake and throttle body. I'd like to keep costs down so I'm not wanting to do pushrods and all the other stuff. Basically put a cam in and nothing more. Terrible idea? Something like a torquer v2 or gx5 2 was my thoughts. I'd likely get a custom grind and then hope when the motor goes that the cam is ok and rebuild/replace the motor. Ive kept the stock rev limiter. I know with 241 heads I wont make big hp which is fine. Racing without a sponser sucks

J.R.

Try something like:
224/228 at .050 .581/.588 lift on a 112 LSA
or similar
or
call Patrick G. and for $25 have him design you a cam.

bosco022

The ASA LS1 powered stock cars made 400 to the wheels with nothing more than the GMPP ASA cam 525/525 226/236 110 lsa, headers, and tuned ecu. They have been excellent road race motors as well. The valve springs were the LS6 type.

My point is that the GMPP ASA cam will give excellent performance in a stock type short block while being easy on the valve train. This cam pulls hard from 3000-6500 and performs way better than the numbers would suggest.

Howards racing cams makes a copy of this cam.

crimlwC6

Thanks for the info. I would like something that didn't strain the valvetrain too much. I've always been tempted by the ASA cam. Bosco022 any idea what type of heads were used in ASA?

racer313g

Original ASA heads were 853 castings (first gen stock ls1 heads).

bosco022

He is correct, all I have seen have been 853's. Same thing as the 241 essentially, (port shape, compression).

Some road race converted ASA cars with still sealed motors have run some extraordinary quick times in the V8 StockCar Series at Sebring, Daytona, VIR, Road Atlanta and others.

Lee Arnold's ex ASA (ex Reed Sorenson Target car) car cut some 2:15's at Sebring in 2012. The motor was the original and prior to the cars road race conversion had not been used since 2004 in ASA. Go look up some Sebring lap times and see what kind of car it takes to go that quickly. A Porsche 997 GT3 cup car in SCCA GT-2 might do it....but what does that cost. Lee sold this car this year, but now wishes he had not.

We put an ASA cam in a stock ls6 long block and got about 480 FWHP with a 650 Holley carb.

crimlwC6

Thanks for the info! I'm going to start shopping for that cam. Any reason to use anything other than the LS6 springs (whatever the new iteration is)? Is my plan to only put a cam and springs in insanity or would any of you wise folks do the same in my situation?

bosco022

The LS6 springs will work, I use the ISKY 165-A's