MAX RPM for modified 305 TPI
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Senior Member
Joined: Jun 2010
Posts: 731
Likes: 1
From: Austin, TX
Car: 1989 G92 IROC-Z
Engine: 5 Liter 305
Transmission: T5
Axle/Gears: 3.45
MAX RPM for modified 305 TPI
So given a modified TPI combination (stock type with aftermarket base, runners and port matched plenum) whats the highest RPM you can achieve while being in range of TPI with a 305? I have seen only seen 350/383 combo's. Shouldnt the 305 be a little higher due to being able to be fed more air given the cylinder size?
I used a calculator that says 461cfm for 5800rpm for a 305 @ 90% VE but I need something more relative, like port size = xcfm for 305ci/8...
I used a calculator that says 461cfm for 5800rpm for a 305 @ 90% VE but I need something more relative, like port size = xcfm for 305ci/8...
Last edited by TxTtopZ; Jul 23, 2010 at 05:01 PM.
Thread Starter
Senior Member
Joined: Jun 2010
Posts: 731
Likes: 1
From: Austin, TX
Car: 1989 G92 IROC-Z
Engine: 5 Liter 305
Transmission: T5
Axle/Gears: 3.45
Re: MAX RPM for modified 305 TPI
BUMP- No one knows what a bunch of hi flow TPI parts will do for the powerband on a 305?? 
Someone's gotta know. 
Someone's gotta know. 
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