At 60 mph...how many RMP's are you guys with SOHC (trans ratio 3:55) turning in 3rd gear (5-speed trans), vs. the DOHC motor (different trans ratio)? Oh, also inlcude your wheel size? Thanks!!

 

Well Im not sure what tranny i have, but at 100 km its turning 21-2200 rpms. SOHC with 15's.

 

3rd gear should run you probally about 4 grand......if i remember i will check mine tonite

 

yea its about 4 grand...cause i know at 80 is when mine redlines....

 

dohc 5 spd is a 3.94 final, mine in 3rd gear - recalcuated speed with 195/45/14" at 75 mph its crankin right in the range of 6800
if your trying to figure somethin out for tire size or whatever use this
http://www.csgnetwork.com/multirpmcalc.html

 

ok, mine being a 98 r/t with 205/40 17's in 3rd gear at 60mph is at about 4600-4700rpm's

 

theres only about a 500 RPM difference between the 2 transmissions, it will vary in different gears, but thats a general idea, the DOHC trans of course will make a higher RPM for the same speed from the lower 3.94 ratio over the SOHC 3.55

 

I'm trying to put together a car for next year (cirle dirt track), and I know they are running a little over 60 at the end of the straights. So....I was thinking if I run in 3rd and can hit about 6800-7000 @ 65mph, I wouldn't have to shift!?????? Right now we have a neon that slams the think into 2nd before the corneres, and shifts into 3 halfway down the staights, which HAS to kill speed??????

 

my 3rd can take me to about 85-90 mph

 

Maybe I'll need to run in 2nd??!?!? What are you dirt drivers running in?