Larger runners worth it?
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Joined: Jun 2018
Posts: 8
Likes: 0
From: Orlando, FL
Car: 1988 Trans am
Engine: 305 tuned port
Transmission: 700r4
Larger runners worth it?
hey guys, I have an 88 305 tpi, do you know if larger runners are worth it or no? i found a deal on them. Only mods so far is airfoil and chip.
Joined: Sep 2003
Posts: 25,895
Likes: 429
From: Pittsburgh PA
Car: 89 Iroc-z
Engine: 555 BBC Turbo
Transmission: TH400
Axle/Gears: MWC 9” 3.00
Re: Larger runners worth it?
It may help a bit on the top end, really would need the base ported or large base to see total gains. On a 350 it does seem to help more than on a 305
Joined: Dec 2004
Posts: 16,737
Likes: 994
From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: Larger runners worth it?
If you can get them for a good price buy them. You can always prepare for larger displacement engine.
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