This is a discussion on AFR heads within the External Engine forums, part of the LSx Technical Help Section category; hi guys i have 99 z28 A4 whith long tube headers and MTI air box + ZO6 intake manifold i`m ...
05-11-2007, 08:59 AM #1
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
05-11-2007, 09:07 AM #2
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.
05-11-2007, 09:09 AM #3
AFR make some of the best heads. There a bit pricey, but we all no going fast aint always cheap
05-11-2007, 09:14 AM #4
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
05-11-2007, 10:00 AM #5
- Join Date
- Feb 2007
- San Diego, CA
2002 Z28 A4 NBM
- Sadly now demodded :(
05-12-2007, 09:22 AM #6
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.
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