RPM vs MPH

[GTX JOHN]

Pretty Hard to answer that general a question because every combo
varies.

Our 340/318 Stocker even with Hyd. Lifters trap about 7200 to 7300 and
have for last 30 years or so (Since Valve Spring Pres. rule was changed).

[Dan Fahey]

Originally Posted by GTX JOHN

Pretty Hard to answer that general a question because every combo
varies.

Our 340/318 Stocker even with Hyd. Lifters trap about 7200 to 7300 and
have for last 30 years or so (Since Valve Spring Pres. rule was changed).

Thank you..
It is good information.
My LT1 iron head in PS touches 6400 rpm at 105 mph best.
Trying to figure best gear and tire for a 4100 lb car moving to Stock.

Figure a long stroke Olds 455 would have 4.56s.
Remember GTOs seem to like 4.33s
305 SBC Camaros guessing like 5.13s
Depending on story 283s would go 7800rpm.


Dan

[HR9121]

I would think you would want a 4.88 with that combo Dan.

[Dan Fahey]

Originally Posted by HR9121

I would think you would want a 4.88 with that combo Dan.

Have 4.56s with 28 slicks

[Mepprecht]

Originally Posted by HR9121

I would think you would want a 4.88 with that combo Dan.

That’s what the baby LT1 uses in my car. Cross at 6500 soooo

[Larry Hill]

I have a 9000 tach and about 1/3 of it is not used.

[Dan Fahey]

Originally Posted by Mepprecht

That’s what the baby LT1 uses in my car. Cross at 6500 soooo

The new cam in K/SA will be running 110-115 range.
To run 6500 rpm range 4.56s may be fine with taller tire.

Dan