Stock rad. hold up to Pontiac 455 engine?
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Senior Member
Joined: Oct 2008
Posts: 324
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From: Pennsylvania
Car: 86 T/A WS6/Future project
Engine: 350 TPI/ Pontiac 455
Transmission: 700R4/TH400
Axle/Gears: Posi.
Stock rad. hold up to Pontiac 455 engine?
Hi, im doing a Pontiac engine swap into a third gen. The engine i am using is a 455. My question is can the stock rad. hold up to the flow needed for the 455 and will there be enough room for the engine to fit with the stock rad?
Joined: Dec 2004
Posts: 1,132
Likes: 24
From: Midwest
Car: '82 Recaro T/A, '71 Trans Am
Engine: 305CFI/455HO
Transmission: TH700R4/M22
Axle/Gears: 3.23/3.42
Re: Stock rad. hold up to Pontiac 455 engine?
I would think a stock radiator from a car with A/C or the Heavy Duty cooling option should work fine. 3rd-gens have a more modern aluminum core radiator that cools better. My '71 T/A 455 HO came with only a 3-core radiator from the factory.
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