2000Z28AUG

What is the approximate hp gains as porting the Fast 90/90 setup. i heard from a friend about 10/15 hp. Is that true or just a myth?

Joey@Tick

iTrader: (20)

We have seen anywhere from 5-14rwhp increases when doing our portwork to a FAST 90mm manifold. Depends alot on head selection and maximum RPM being turned.

bryan04h

iTrader: (2)

with your cam and heads in your sig, i would say you would benefit from it with a good tune...possible 8-10 rwhp

RareBreed0295

iTrader: (35)

Get it ported. I had a poll a while back about it and it was like 20 to 1 for porting it.

teke184

iTrader: (5)

if you can spend $1200 on a FAST 90/90 to gain 20hp...why not spend another $250 for the porting and gain another 10-15hp?

04goatman

How much h/p can u gain if u port fast 78mm intake ?

Gun5

iTrader: (37)

get a professional products 90mm TB then get a fast 90 and get it ported there ya go

04goatman

If i can get a used fast 78mm lsx for around $400-$450.00, Is it good deal ????

Zero4488

iTrader: (10)

When I get my new cam and intake mani, I'm going 90/90 ported...hopping to make some descent power cam only....

2000_SS

iTrader: (24)

78mm FAST intakes are a waist IMHO. if you're gonna blow the money, go 90mm. i ported mine for FREE, less the cost of sanding rolls. went from 393rwhp through factory 10-bolt to 417rwhp through a 9".

there's a few threads on here about how to port a FAST yourself. Our sponsors know a few tricks we don't i'm sure, and have flowbench access, BUT there are several places you can easily work one over yourself and get SOTP gains

radkon

iTrader: (2)

The 78 MM FAST and 90 MM fast are only about 3~5 HP different according to research Tony has done so if you can pick up a 78 cheap I'd go for it. I did! :thumbs:

BOTTLE ROCKET

iTrader: (4)

$250?? I paid approx $760 for my Fast, and was quoted around $350-$400 to port it.