camaro-coz

Hey guys
I have a 02' camaro SS M6
Bottom end ls1 : stock crank , 6.200 rods and -2 cc pistons on 3.905 bore
with the ls6 stage 2 patriot heads 58cc

Car's result is 465rwhp/430rwtq at 11.75 compression

what I want is the same numbers but with lower compression
so a friend of me have the AFR 225 62cc

So do you recommend me to buy the AFR for my motor ?

vettenuts

iTrader: (4)

Not sure you will get the same power with better heads but lower compression. I would shoot Tony Mamo a PM and get his input.

Are the AFR's untouched? Recently there was a set that someone tried to port and they actually screwed up the flow.

camaro-coz

Thanks for you'r feed back ,
yes they are untouched heads.

mike c.

iTrader: (1)

I gained alot of power going to the AFR head over a top sponsor's head. I have seen patroit heads at the track and i consider them a budget head like the ones i had. You will gain from an AFR head,if you keep the compression the same the gain will be bigger. if you lower it some like to 11.5,you should still see a gain. The AFR head has great mid flow and will gain under the curve and the car will accelorate faster. Still,pm tony and get some AFR heads. Also,Pat G is great at custom cams,I have had two from him and each time i made a nice gain over the cams i removed.

camaro-coz

Thanks for you'r help !
So do you think the AFR's are better heads than the trickflow's ?

ct06gto

No, but their not worse either. I would say it comes down to personal preference. I went with Trickflow because of the Brian Tooley factor.

GTO1_OHIO

iTrader: (3)

I've raced for years in NE Ohio, home of trickflow and Brian Tooley, and the faster builds in the area all use AFR. Hell one night at Dragway 42 a couple of their engineers came over to my car to see what I was running to get my low numbers ... Mamo ported 205s. They didn't want to talk much after that, lol

oldguy99Z

iTrader: (2)

Are those 225 AFRs the small bore version of those heads? How big diameter is the combustion chamber? Not sure the regular 225s will work on a 3.90 bore;you might want to check with Tony Mamo on that.If they fit I think you would gain power for sure.

Camaro99SS

iTrader: (4)

If the AFR's haven't been touched since being run, you'll at least want to do a little cleanup mill to ensure they're flat. With that you might as well have them milled down to ~58cc where you're at. Also be careful with stuff like the bronze valve guides as they will wear out quicker without roller rockers on a higher lift cam.

I almost bought a set of used Mamofied 205's but after adding up the extras to make sure they were fresh, it was very close to a set of brand new ones.

Jason