What are your full-throttle shift points in "D" drive?

Dibbons · Apr 7, 2025

My parents new 1971 383 automatic shifted into second and third at exactly 4,500 RPM at full throttle. At the drag strip I would manually shift at 5,500 rpm.

But my question today is: At what engine speed does the factory 904 in the '71-'74 BBody 318 shfit at full throttle? Thank you.

Runner 68 · Apr 7, 2025

Exactly 4,500 RPM?
Maybe it's me but I think you answered your own question.

Cop car wagon · Apr 7, 2025

Factory governor is 4600.
Mine has been changed to 5200. Took the column mounted tach out, just crank the tunes and floor it in drive.

Dibbons · Apr 8, 2025

Runner 68 said:
Exactly 4,500 RPM?
Maybe it's me but I think you answered your own question.

I always assumed the 318 two-barrel shift point would have been at least a little lower than 383 four-barrel.

Runner 68 · Apr 8, 2025

Dibbons said:
I always assumed the 318 two-barrel shift point would have been at least a little lower than 383 four-barrel.

Just the opposite. A small block can be twisted tighter than a big block easily.

Dibbons · Apr 8, 2025

Runner 68 said:
Just the opposite. A small block can be twisted tighter than a big block easily.

That's true, but when it comes to new vehicles I don't expect the factory to spin a stock 1970's two-barrel 318 any higher than their performance 383.

What are your full-throttle shift points in "D" drive?

Dibbons

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Runner 68

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Cop car wagon

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Dibbons

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Runner 68

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Dibbons

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