Fast 90mm question

Reply Subscribe

Thread Tools

Search this Thread

Oct 27, 2017 | 06:07 PM

Donnyd16

Thread Starter

Staging Lane

Joined: Jun 2017

Posts: 54

Likes: 0

Fast 90mm question

I bought my car with this set up,

-Trick Flow ported heads
-Comp camshaft
-Harland sharpe roller rockers
-Fast 90mm intake manifold ported
-Nick Williams 90mm throttle body
-SLP air intake
-Slp under drive pulley
-RK t56 built transmission
-Kooks true duel with 1 7/8 headers and full 3in exhaust no cats
-New motor and tran urethane mounts

If were to switch over to a Fast 102mm and TB would I see a difference with a new tune?

Oct 27, 2017 | 06:22 PM

HCI2000SS

TECH Senior Member

iTrader: (2)

Joined: Aug 2012

Posts: 11,137

Likes: 20

From: Howell & Fenton MI

Ported 90 to a stock 102?

Oct 27, 2017 | 06:33 PM

Donnyd16

Thread Starter

Staging Lane

Joined: Jun 2017

Posts: 54

Likes: 0

Correct

Oct 27, 2017 | 06:36 PM

HCI2000SS

TECH Senior Member

iTrader: (2)

Joined: Aug 2012

Posts: 11,137

Likes: 20

From: Howell & Fenton MI

No gain then. In fact the 90 will probably have more power if it's ported right

Oct 28, 2017 | 11:36 PM

Mazzenger

TECH Enthusiast

iTrader: (5)

Joined: Apr 2002

Posts: 747

Likes: 4

From: Oklahoma

You MAY see a small gain up to 5hp, but it will be in your upper rpms only, not across the entire range.

It's not worth it if the 90 is already ported well. Keep the 90.