Originally Posted by FlashLCD33

I agree that I would cam first, but if you can bolt on heads in a C5 like nothing, then it may be worth a shot. You should see some nice gains with tuning, but you'll definitely need a cam to really optimize it. I definitely wouldn't do everything to optimize a "heads only" setup, like extensive milling, bigger rockers, etc that will give you PTV issues when you do cam it.

Originally Posted by sprayed_z

Pipe dreams.

This is about the most retarded thing I have heard for awhile. Put a cam in it idiot. You're just going to waste time and money and not gain **** for hp with "heads only"................

Some people shouldn't own cars.

Originally Posted by sprayed_z

Pipe dreams.

This is about the most retarded thing I have heard for awhile. Put a cam in it idiot. You're just going to waste time and money and not gain **** for hp with "heads only"................

Some people shouldn't own cars.

Originally Posted by sprayed_z

Pipe dreams.

This is about the most retarded thing I have heard for awhile. Put a cam in it idiot. You're just going to waste time and money and not gain **** for hp with "heads only"................

Some people shouldn't own cars.

Originally Posted by LTstewy8

wtf?

I'm doing the exact same thing as the op for the very same reasons stated. Don't be so eager to bash someone so ignorantly for doing something out of the ordinary, especially if you've put a nice engine in a car I don't even know the name of.

Originally Posted by teke184

the push for the 5.3s on the board is because they perform and they don't cost alot. on top of that they have good flow without hogging the runners out (better low end) and they bump compression even on stock gaskets.

as for the deal with dynos starting at 3000rpm...i would still consider that "low end". >5000 would be upper rpm.

not many guys would start a race from 1500rpm. and casually driving around town at 1500-2500rpm you aren't too concerned with power since you're not likely going wot much.
but if i get in a street race, i'll downshift to get the rpms up into the mid range.

and if i'm throwing the car around some twisties...i'd aim for the mid range as well so i don't have to worry about shifting in the middle of the apex.

so showing power gains at 3000rpm is useful for me.

Originally Posted by lemons12

AFRs are going to dominate any ls6 head, not question about it.. they are an aftermarket casting..

Originally Posted by navymitch12

Untill you have owned an Fbody and a Corvette you prob wont understand why he is doing heads only. In an Fbody everyone does cam only cause the cam swap is "easy" where as in a corvette you have to either pull the engine or drop the steering rack out to get the balancer off.

I say go for it man, clearly there is proof that it will give you gains, not as much as heads and cam would but you cant compair the 2.....

turbo!

Originally Posted by VIPERBLUELX

Not so sure about that, i've seen 346's making 500rwhp with 243's.

Originally Posted by sprayed_z

It's an rx7 genius.

http://ls1howto.com/index.php?article=1

From my research, its not that hard..and yes I do wrench on cars and ripped apart my z28.

Originally Posted by VIPERBLUELX

It took me 45 minutes to get the rack completely out of the way.

Originally Posted by jmilz28

Enough of replying to the douchebag, put him on "ignore list" and be done.

Machine the "AFR" off the heads and etch in some casting numbers, hehe. This could really go somewhere, it will be pricey, but have no compromises. I also bet it would really surprise, or own lots of half *** heads/cam cars.

Milled AFR205s ported
Ported 92/92 combo, sanded, painted
Tune (maybe injectors)

Take care of the details and I bet you see easily 400/400 and sound like stock with stock MPG and reliability.

Originally Posted by jmilz28

I have posted on this several times and think it's a great way to go. Don't listen to guys who have the knee jerk response "just do the cam." You've got your reasons. Also, your list of cam swap vs. heads swap items/costs is important, especially on a C5. To me, the heads only deal makes sense if:
you put a ton of miles on the car as a daily driver and/or
if the shortblock has tons of miles on it.

My thinking is, to take this as far as it can go and retain 100k mile + reliability, heads, FAST intake, TB, lid, and exhaust are absolutely the way to go. Don't disturb the lower end if you don't have to. My dream combo would be the AFR 205s and the FAST 92/92. Don't listen to the guy who says a tune is worthless with the stock cam, he's misinformed. A GOOD tune regularly grabs 10-25 rwhp on stock/bolt on cars depending on how rich and off the stock tune is. That will only be more true with some good heads.

If you really wanted to go hog wild, Mamo-fy the heads, intake, sand and paint the intake black, use an 02+ LS6 cam/springs, get a good tune and you have the best of all worlds. 400/400 and stock manners/MPG/reliability. Stealthy killer. I put so many miles on my car, I don't want to change springs every year, which is why the stock/LS6 cam is something I have looked into.

I think you're on the right track with looking at a good ported, small runner head to maximize the stock short with no real downside. I'm curious how the new PRC 215s would do, as well as the AFR 205s. I'm surprised more people don't go this way. Some stage 1 or 2 GTP heads would be good for this too, as Craig's approach was always velocity throughout the range.

Keep us posted.
Jason

Originally Posted by allngn_c5

Good bump, I was wondering what happened with this ? Its been close to a year now.