Mygoat1

I'm new to the site just wanted to post I got a new build taking place. 408 storker Iron block all forged internals. Diamond pistons, AFR 225 66cc heads 102manifold, heads and manifold are being molested. 80lbs Inj, F1-A procarger, custom bumb stick, 1 3/4 pacesetter headers, Monster Clutch, Meth kit, All ARP hardware, and a well known shop will be doing the build and tune. Upgraded tranny 6sp on the way. Goat already has upgraded halfshafts, Drag bags and corsa exaust, short shifter, rear seat delete.

Will be a weekend cruiser. 98 honda civic daily driver. My 3rd Goat but first real build.

Bob@BruteSpeed

iTrader: (16)

Your list of build parts looks good, but I would get rid of the Pacesetter 1-3/4 headers and go with a better set of headers in a larger diameter tube. Kooks 1-7/8 work very well. Take a look at this GTO build we did at the old shop that is no longer open. http://www.exoticperformanceplus.com...Car.php?car=11 Bob

Mygoat1

I will be ditching the headers for a better set shortly.

CABRO

iTrader: (1)

Arh or kooks......

Bob@BruteSpeed

iTrader: (16)

The Kooks just about drop into place on the GTO's, fitment is excellent! Bob

Mygoat1

Will be Kooks for sure. Just Gave the shop 11more big ones for parts today. will be sending money for Tranny upgrade, headers and gauges shortly. Then I will be pinching pennys for the labor. lol...

ls1 1990 VN

Noticed you had the old style of cross over between pipes, WHY? considering these days better flow & power is to be had by better merge junctions.
Also noticed the air cleaner way low to the ground, as this is to be a street car as well, you have left it wide open to a Hydraulic issue if he's ever caught out in the rain!!!!! & it sucks in water.

Bob@BruteSpeed

iTrader: (16)

The exhaust system we put on the car is/was a temporary system as the customer had plans for side pipes with body work for them.

We've done a lot of builds with the air intake as low as it was on this GTO without any problems. A little rain won't hurt, you just have to have common sense and stay out of deep water. Bob

Mygoat1

this 408 was being built for a 10.1 10.5.1 cr. the pistons are diamond 16cc my ? is what is a safe amount of boost to run. I want to get to 700rwhp. I'm not sure what rings are in the block either. I know my brother had it built for nitrous any comments or advice would be great.

Bob@BruteSpeed

iTrader: (16)

Run methanol injection with it and you should be able to run 19 to 20 psi of boost with good gas. The only problem is you'll be way over your targeted 700 rwhp. Check out the graph below which was with an LS2 with a 4.00 crank (402), AFR 225 heads, FAST 92 intake manifold, 232/240 595/608 on 115 camshaft and an F-1A at only 12.5 psi of boost. This is through a manual transmission. Bob

Mygoat1

Hey guys i was told by my engine builder that I should go with the 237cc prc heads 68cc cnc chambers offered by texas speed. He told me that they will out flow my afr 225 65cc heads. I wanted an opinion on this as the afr heads have been worked and have upgraded springs. I will have to sell the afr heads to get the prc heads. Do you guys thinks its worth the wait and cost for difference in power. I was told that the restriction on this motor would be the heads and for 18psi I should go with the bigger heads... any ideals guys?
I really don't want to sell the AFR heads but if the gain in power is worth it might change my mind..

1INSANEGTO

iTrader: (13)

Hey I have a set of Kooks 1-7/8 with catted mids if your interested?

I am running a custom stepped header on my 408 F-1R setup in my 04 GTO. There 1 7/8-2" with a 3 1/2 collector.

Also I am running AFR 225 heads. You should have not have any issues. This is Forced Induction not N/A.

Mygoat1

Hey I have a set of Kooks 1-7/8 with catted mids if your interested?

I am running a custom stepped header on my 408 F-1R setup in my 04 GTO. There 1 7/8-2" with a 3 1/2 collector.

Also I am running AFR 225 heads. You should have not have any issues. This is Forced Induction not N/A.


what kind of price are you asking for the headers. I priced out some new 1 7/8 today and have not purchased any yet. Ya I think I'm gonna go with my heads if they dont sell. they just went on sale today on ls1gto.com My brother is selling them for me. I am overseas right now. Well let me know your price. If you have a pic that would be good to because i am definitly going to buy a set new or used.

1INSANEGTO

iTrader: (13)

$900.00 shipped to you door for headers and catted mids.

LS1RedZ

iTrader: (19)

Sounds like your gonna have a stout little setup. I wish I had the coin for a F1-A. Maybe one of these days. I was about to say that you need to ditch those Pacesetters. I have those now and I wish I would have gone bigger.

Mygoat1

Man I would bye but my bro bought some yesterday. That was fast didn't know he was going to buy them so soon sorry man. Like I said i'm overseas and about 10hrs ahead of you so I didn't get to talk to him in time.

Bob@BruteSpeed

iTrader: (16)

8's in the 1/4 with AFR 225 heads and an F-1A has been done. That dyno graph I posted was with AFR 25 heads, I'd keep what you have. Bob

Mygoat1

Hey bob between what i'v seen on other builds with the simular setup and the dyno you posted Im sure I will be happy with the build overall. I'm going to leave the heads on the market till wendsday and if no sale I have no problem going with the 225's. I was impressed with the dyno sheet you posted dame nice numbers too. Thanks for all your advice man..

Bob@BruteSpeed

iTrader: (16)

You're welcome, thanks! Bob

CABRO

iTrader: (1)

it has hellfire rings.... and the pistons are -15cc

the afr 225's are 62cc

there fixed it for you