AFR heads

[feras]

hi guys

i have 99 z28 A4 whith long tube headers and MTI air box + ZO6 intake manifold

i`m looking for change the stock cylinder heads and some boddy told me to go with AFR heads

i want ask about this heads is it the best heads for an LS1 .?

and wich type or size should i buy .?

and what about cam is it comming with heads or not .?

if i need to change cam whic kind is better

my car now has 310hp _ 335 torq

i need to go up more thane 500 hp what should i do or chang ..?

if i buy this hedas with a big cam can i get more than 500 hp

thanks

[MikeSomething]

AFR's are a pretty well known brand, but there are others.
I don't think you'll be in the range of 500hp w/ just heads & a cam.
If you do throw on a cam, make sure it breathes well (headers & intake). Don't have each thing done one at a time. Have the motor out and do it all in one shot. Check out the "Internal & External Engine" Sections of this forum. I'd also recommend doing all forged internals & you'll probably have a taste for nitrous at that point.

[rajiv1998]

AFR make some of the best heads. There a bit pricey, but we all no going fast aint always cheap

[feras]

thanks my friend

but really i`m confused when i check the sites there are alot of zise and number of heads
so i want to ask u which size or number should i buy for cames and heads

[67CamaroRSSS]

thanks my friend

but really i`m confused when i check the sites there are alot of zise and number of heads
so i want to ask u which size or number should i buy for cames and heads

The number of the AFR head (195, 225 etc.) states the airflow in cc's of that particular head. Higher airflow means more power if you add suitable components to complement the heads capabilities (i.e, bigger cam with more duration and a better exhaust system). Also, the stock rotating assembly is somewhat RPM limited due to the rods and pistons. As has been stated above forged components will win out every time especially if you go FI or N2O.

[mrr23]

the AFR heads are a good buy for what they do. here's a dyno test that vinci did. completely stock 2003 corvette only swapped te heads. stock tune. picked up 37 rwhp. i haven't seen any other head manufacturer try this type of test.

http://vincihighperformance.com/BECK...CT%20PAGE.HTML