Oldster65

I just inherited a "65 Delta 88 with 2bbl 425. I have a "71 Olds 455 in my vintage motorhome that I'm about to convert to FI, thus I'll have a 4bbl Olds 455 intake sitting around.
By any chance are these motors the same with just diff bore/stroke? Might be fun to swap the 2bbl for a 4bbl someday to see the diff.

joe_padavano

All Olds big block engines are dimensionally identical. Manifolds, heads, distributors, water pumps, all swap.

Oldster65

Just what I hoped I'd hear! Thank you!

cutlassefi

When you say FI, I’m guessing you mean one of the throttle body systems?

joe_padavano

Be aware that the stock iron BBO intakes aren't light.

Bfg

Grampa might not approve of this change

OLDSter Ralph

You have an unmolested beauty !!!! Do you really want to open a can of worms ?

Oldster65

Thank you, I know. No - I really do not want to touch anything I don't have to. I was mostly curious if the parts were compatible.

Oldster65

I think you're correct.