TypeR0149

well My car originaly had the following mods

2004 GTO M6 4700 miles

Lingenfelter CAI
MTI 78mm TB
Dynatech LT headers
Flowmaster Exhaust
ASP pully
Comp 224/228 .581/.588 113lsa

car made 380/350 (tuned) weather - 79deg 30% humidity

added AFR 205's (11:1 compression - angle milled)

car made 430/390 (tuned) weather - 88deg 60% humidity

by my calculations 50hp/40rwtq

many thanks go to Dino at Rev Xtreme, and Jeremy Formato.

thanks to Tony at AFR for finding me a set, most places were 4-6 weeks I got mine in 2 days

P Mack

iTrader: (6)

Awesome gain. Got a graph?

gator's 99TA

iTrader: (2)

thumbs up to Rev Xtreme and Formato's tuning. jeremy told me about the results last night, pretty sweet deal

Ben01C5

I plan on doing a similar heads only swap here shortly. Just waiting on the heads to arrive.

02SOMWS6

iTrader: (6)

I have very close to the same cam specs and made 426rwhp and 406rwtq. Tha.t was done with the stock cat back and a 12 bolt rear and a Denny's steel driveshaft. I thought those heads would have made 450-475 with your set up.Your making great #'s , I just thought those heads were suppose to put everyone elses to shame. Looks like I would get no gain switching heads

jrp

iTrader: (16)

good for you, however you missed the whole point of this thread.

pdd

iTrader: (3)

nice-congrats

mzoomora

iTrader: (36)

Nice gains! I called a AFR dealer the other day and they told me 8-10 weeks now on the LSx heads, and 10-12 on the AFR 195's SBC heads. They make awesome product for sure.

Got Me SOM

iTrader: (2)

impressive gain, but a graph needs to be put up

crazykid

iTrader: (79)

You are not saying much. You are comparing apples to oranges. He is just trying to show everyone the gains of going from a stock head to a AFR 205 head.

Nickn20

great results. ditch the flowmaster exhaust unless its a gutted single chamber.

M6HuggerSS

very nice gain! im sure the car feals much faster now!!!! so how much were the heads?

ddnspider

iTrader: (26)

WOW good stuff