interchangeable parts from olds 350 rocket with chevy 350
January 5th, 2012 | 10:45 AM
#1
Thread Starter
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Joined: Jan 2012
Posts: 2
interchangeable parts from olds 350 rocket with chevy 350
Does anyone have an idea if parts from a chevy 350 sb are interchangeable with an olds 350 rocket. About to start my first engine rebuild & I don't want to start investing in parts that will not fit.
January 5th, 2012 | 12:02 PM
#5
Connoisseur d'Junque
Joined: Sep 2010
Posts: 21,183
From: The Hudson Valley
You forgot the condenser!
If you want to be broad-minded, you could also include the alternator, regulator, radiator cap, and, in most cases, the radiator.
In non-stock parts, you may be able to interchange "universal" spark plug wires (Chevy normally has 90° ends, while Olds are straight).
I think the oil drain plug might be the same, too (Joe, can you confirm that?
).- Eric
January 5th, 2012 | 12:09 PM
#6
Old(s) Fart
Joined: Mar 2007
Posts: 48,401
From: Northern VA
Prior to the late 1970s, each GM division had their own proprietary engine designs (many feel that the switch to "corporate" engines was the start of the downfall of GM). Despite having similar displacements, these engines were completely different designs with different bore, stroke, rod length, bore spacing, etc. None of the castings or forgings interchange. In fact, the common 350 cu in designation is really a rounded off number. If you calculate the actual displacement of each division's "350", you will find that they are all different.
People have adapted Chevy (or other brand) internal parts (mainly rods and pistons) to Olds motors to achieve custom displacements, but his requires considerable custom machine work.
The bottom line is that an Olds 350 has about as much in common with a Chevy 350 as it does with a Ford motor.
People have adapted Chevy (or other brand) internal parts (mainly rods and pistons) to Olds motors to achieve custom displacements, but his requires considerable custom machine work.
The bottom line is that an Olds 350 has about as much in common with a Chevy 350 as it does with a Ford motor.
February 14th, 2021 | 05:29 PM
#7
Registered User
Joined: Feb 2021
Posts: 1
No, the Olds had a slightly wider bore but shorter stroke than the Chevy 350. I also believe the Olds had a heavier crank than Chevy. 2 completely different engines that just happen to equal 350 cu in displacement.
Last edited by Jay Curry; February 14th, 2021 at 05:36 PM.
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