425 Engine Identification
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Joined: Mar 2009
Posts: 540
From: italy
425 Engine Identification
Can any of you tell me if my engine 425 is 39 ° or 45 °, it can be recognized only by the casting number of heads?
Thanks
1964-65 SB Olds used shaft-mounted rocker systems, completely different from the later pedestal-style systems.
From 1964-1967, a 45° cam bank angle was used. Some, repeat some, 1966 to 1967 Toronado, Starfire and 442 engines used the 39° cam bank angle. 1967 330s used a 39° cam bank angle. Thus problems with camshaft interchangeability. The few 1966 and 1967 400 and 425 39° cam bank angle blocks
Thanks
1964-65 SB Olds used shaft-mounted rocker systems, completely different from the later pedestal-style systems.
From 1964-1967, a 45° cam bank angle was used. Some, repeat some, 1966 to 1967 Toronado, Starfire and 442 engines used the 39° cam bank angle. 1967 330s used a 39° cam bank angle. Thus problems with camshaft interchangeability. The few 1966 and 1967 400 and 425 39° cam bank angle blocks
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Joined: Jul 2009
Posts: 443
From: Ontariario
Thread Starter
Registered User
Joined: Mar 2009
Posts: 540
From: italy
is now clear the difference, mine is a 45 °
thanks
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