'62 Jetfire Engine ID?

[Starfire61]

How does the Jetfire engine differ from the carbureted aluminum V-8s in 1962?

I know the 4-barrel aluminum V-8s shared the same 10.25:1 compression, but are there other differences?

Different block? Heads? Pistons? Cam?

What was the standard transmission, & were they available with a four-speed?

[Oldsfan]

All F-85/Cutlass/Jetfire motors had an S prefix in the motor number. A true Jetfire motor will also have a T suffix. A G suffix would be a 4bbl motor and no suffix would be a 2bbl. E and H were for export.

Oldsmobile did not service a bare block, so I can't compare part numbers. I would imagine they are basically the same.

Heads interchanged on '61 & '62 F85 4bbl, '62 & '63 Jetfire and '63 4bbl manual transmission.

Jetfires used different valves than other F85 models.

Camshafts appear to be the same as used in other F85s.

Pistons were '62 & '63 Jetfire only, and '63 F85 4bbl automatic. Interesting considering the heads are the same as '63 F85 bbl manual trans.

Standard transmission appears to have been a 3 speed on the column like a standard F85. 4 speed on the floor and automatic on the floor were options.

Paul

[Starfire61]

Thanks!!!