Siamesed runner length for more RPM
Thread Starter
Senior Member
Joined: May 2012
Posts: 705
Likes: 95
From: Manitoba, Canada
Car: 1987 Z28 IROC
Engine: 6.2L
Transmission: 700R4
Axle/Gears: 3.23
Siamesed runner length for more RPM
I am building a 350 vortec TPI combo and have been given a set of what I assume are SLP runners. They have been ported to increase the siamesed portion and then extrued hone ported.
My question is how much of the dividing wall needs to be removed to show an increase in RPM potential? Right now 2" of the dividing wall has been removed. I want to make peak power around 5200-5500 RPM.
Pic of what I am starting with:
My question is how much of the dividing wall needs to be removed to show an increase in RPM potential? Right now 2" of the dividing wall has been removed. I want to make peak power around 5200-5500 RPM.
Pic of what I am starting with:
Joined: Apr 2005
Posts: 7,736
Likes: 14
From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Thread
Thread Starter
Forum
Replies
Last Post
wigmobile
Electronics
5
Feb 26, 2025 02:56 PM
toronto formula
Engine/Drivetrain/Suspension Parts for Sale
3
Sep 10, 2015 07:31 AM
