With solid lifters, you can rev as high as you trust your springs and bottom end.

I don't know what the facination is with all this head crap. The 2871r .64ar turbo car that I did a while back with HKS 264 step1 cams made 360+whp at 16psi. A similar car with JWT S3's made 375+. These are stock intake manifold cars. My buddy TS4l on FA made 400whp at 16psi on a 30R with HKS 264 step1's. Big f-ing cams are not going to drastically change your power output versus properly sized ones. These are probably similarly sized turbos to the one you're running. My car is making more power now on JWT C1's than it was on HKS step3's.

I'm talking out my ass here, but this is my understanding from working with dozens of customer's setups:

272 step2's with stock HLA will make the same power as on solid lifters.
264 step 1's will make 95% of the power that 272 step2's will make on a stock intake manifold setup, plus the 272's will idle like crap and you won't be able to stand your car in traffic.

The stock cams are a bigger power killer than people think. That 2871r car that I mentioned was making 290whp at 16psi with stock cams. With just the HKS step1's it picked up 70whp. You're making 330-340ish already with stock cams, right?....

Apexi gasket, ARPs, HKS step1's or JWT S3's. Tune it and you're done. It makes what it makes, and you can probably get a little more with a Greddy intake manifold.

 

yeah im making 340 and 302tq. the only thing is i havent heard much about jim wolf except from you.

you dont need springs at all with them? wont i get valve float?

and now that you mention it i did see in a super street forever ago that they put hks 264's in a car dyno'd it and then put 272's in the same car motor and everything and it made less power and tq but it wasnt by alot probably kike 8 to 12 hp but still the huge cams will probably make my drivability go down the tubes

 

there is no probably about it, huge cams kill driveability...

here's another little bit to consider.
since you are already at 340 HP, and you already said you don't need 400 hp to go back and forth from work and what not, why not look into a simple nitrous set up?
you already said you would run the lower HP when daily driving and drifting, but would up to the higher HP tune when in a drag race. That sounds like the perfect situation for nitrous. A simple set up with a little 100 or even a 75 ought to get you the power you want and you wouldn't need to worry about squeezing everything you can out of the head. ya know.

 

that is a great head setup. you can rev to 8k reliably. you can rev higher on that setup but you probably wont need too. those cams with solids have a smooth idle and good drive ability. I know because I have been running BIG cams on solids for over 3 years now. I tried running big cams like those without solids and I lost power from the 264's I had and the idle was rough.

 

thats horrible.

 

this is for you Chris.

 

i still dont see the point of revving higher than stock.
you arent squeezing too much power out, and its hard on the motor
the key is to be able to rev to 9k.
and only actually revving to stock.

 

thanks tim. i remember the last time i rode in your car the idle was fine but i thought you had 264's.

i just hear 2 different things from every person on here and i know everybody would build a head different but i dont know i guess i'll just save up and get ready for everything then decide i'll probably keep my cams unless somebody offers me alot for them.

i always liked the idea of having my car chug

 

dont you have to re-shim all the time with solids? and the nitrous thing im scared of. i would rather stay away from it

 

you dont really have to reshim all the time, but you do need to check it often.
and it will need a reshim every once in a while.
i hate all that shit, maybe its because i work on cars all day,
but come end of the day, all i want to do is drive like an asshole, and make cool noises with my car, not sit in a garage with feeler guages, and micrometers and shit. hah