RPM vs MPH
 

What RPM are Stockers driving across the Traps and at what MPH?

Re: RPM vs MPH
 

More than what S/S and Modified did years ago.

Re: RPM vs MPH
 

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).

Re: RPM vs MPH
 

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

Re: RPM vs MPH
 

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

Re: RPM vs MPH
 

Have 4.56s with 28 slicks

Re: RPM vs MPH
 

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

Re: RPM vs MPH
 

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

Re: RPM vs MPH
 

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

Re: RPM vs MPH
 

Yepper.......You nailed it !

Re: RPM vs MPH
 

At Pomona, I ran 110.66 in my Chevelle first time run Thursday. Tach indicated 7465 RPM at the end. 5.57 gears, Hoosier 9 inch radial slicks, it felt like the engine probably wouldn't go much higher. The formula there is something like 68 RPM per MPH. The real fast 283 cars with 6. 14's at 103-105 must be over 8000. Scary to think about.

Re: RPM vs MPH
 

Garley Daniels once told me with a small block "RPM's are your friend" lol!

Re: RPM vs MPH
 

97mph / 7800 rpm
6.14 9x30
yep theres some slip but comes with the convertor flash@ 5500

283 with 2004 shubecks :0

jack