vavle size on a 90 5.0tpi?
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From: WA
Car: 1989 Camaro Iroc-Z
Engine: 305 TPI (LB9)
Transmission: 700R4
Axle/Gears: 2.77 posi
Re: vavle size on a 90 5.0tpi?
I think they are 1.84" Intake and 1.50" Exhaust... Casting number on those heads should be 14101081. I think the chamber size is 58cc.
Just run a quick search for that casting # (14101081) and you should get some info. Here's the thread I turned up on a Google search that gave me the valve sizes (reply #4). Hope that helps.
Just run a quick search for that casting # (14101081) and you should get some info. Here's the thread I turned up on a Google search that gave me the valve sizes (reply #4). Hope that helps.
Thread Starter
Junior Member
Joined: Feb 2009
Posts: 75
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From: Sanford Maine
Car: 1990 firebird formula
Engine: 5.0 tpi
Transmission: t-5
Re: vavle size on a 90 5.0tpi?
anyone know what the stock cam specs are on this motor and what the largest can that can be run with the stock springs?
Member
iTrader: (6)
Joined: Oct 2006
Posts: 320
Likes: 0
From: WA
Car: 1989 Camaro Iroc-Z
Engine: 305 TPI (LB9)
Transmission: 700R4
Axle/Gears: 2.77 posi
Re: vavle size on a 90 5.0tpi?
Here are the stock cam specs for 1990 (scroll down the page a little). Unfortunately I can't answer your question about the max lift on stock springs, but I'm sure someone else will come along with an answer for that. Good luck. 
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Pac J
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May 17, 2020 10:44 AM