LouRider

Hi all!

My Olds Cutlass Salon 78 was formerly a 3800 six. Today there is a V8 under the hood, and the seller says itīs a 260 rocket.
But itīs red! Please help me:

Can you recognize what engine this is?

matt69olds

Small block Chevy. Blasphemy!!!!

joe_padavano

Welcome. Yes, that is a Chevy motor of some unknown displacement. Definitely NOT a 260 (though Chevy did make a 267). While these cars did come from the factory with an optional 305 Chevy motor, it would have been corporate blue, not Chevy orange. FYI, the wheels are Buick, so no telling what else has been done to the car.

olds 307 and 403

Where are you from? I know the 81 in Canada came with the 267 as an option but would not be orange.

edzolz

Damn Joe, I know you are the best parts guy here, but how do you know the wheels are Buick. I can't see them on my screen.

Tedd Thompson

No Joe isn't clairvoyant, he just reads all the forums including the newbie forum. There is a good side view of the car in question.. Being somewhat of a purest I think I would probably pick the SBC over the turtle anemic 260 Olds, just not the best engine Oldsmobile ever made... Tedd

oldolds88

id numbers are on a pad under the alternator.post them and we can tell you what you have

LouRider

Thank You guys for Your quick replies!
I fear I bought a little bastard.

But I think on the other hand the car is in a good state and very rare in Germany.
I do not know about the differences between American and European versions of the Aeroback. I never seen this car in Germany except my one!
My Valiant is built in Switzerland, but the Cutlass is made in USA. Maybe a Canadian version?

joe_padavano

I cheated. There's a better picture in his other thread.

olds 307 and 403

No a hunchback! It does like in great shape. You will have to check the casting on the block and the Vin to figure out what is in there and what came from the factory. Didn't the 305 come in that year from the factory?

LouRider

Found out that OEM engine was the 3800 six!

And now with all your help I could find out that actually a 261 GM V8 sits in there!
Seventies Chevy Monza , Nova and Pontiac ...

Well, the performance datas are nearly the same as from the 260 Rocket. And now street legal.
It is what it is.

The only muffler lies across under the rear, in line with the rear bumper. But it is boring quiet.
Now I have to find out what muffler for replace ...

(God, my English knowledges are based on two years school English in the early 70īs ... please excuse)

joe_padavano

There is no such thing as a 261. Chevy built a 262 from 1975-76 and a 267 from 1979-1982.

70W-32

And a 265

joe_padavano

I'll put money on the fact that the OP does not have a 1950s-vintage 265.

LouRider

Joe is right, thank you! It is a Chevy 262 1975, built just one year, coming from a Chevy Monza.
The car doesnīt really accelerate, it is casting off, as a steam ship.