Team Camaro Tech banner

1 - 8 of 8 Posts

·
Registered
Joined
·
61 Posts
Discussion Starter #1
can someone tell me what rearend ratio i might have if i rev 3500 in 4th driving 60mph with a 4-spd saginaw? its a 67 L30/M20 coupe with 10-bolt rear... Thanks!

------------------
67 std/dlx coupe L-30/M-20, bolero red/parchment, vienna
 
S

·
Guest
Joined
·
0 Posts
to turn 3500 with a 1:1 tranny gear and 12" height from center of the rim to the ground you would have to have a 4.10 ratio in the rearend.
 

·
Registered
Joined
·
8,305 Posts
my 26" tall tires do 2800 at 60 with 3.70 gears. that's with a 4 speed, not an auto. no, i didn't get that from looking at my speedo- i used a formula in The Auto Math Handbook. 3500 would be in the 4.56 area, for me at least. taller tires will lower the rpm, shorter will raise it.

------------------
1971 Nova(looks like 69 camaro from underneath!)
355sb, vortec heads, HOT cam,T-10 tranny, 3.70 gears 16X8" IROC wheels. 12" Corvette brakes on the way.
see pics here http://community.webshots.com/user/novaderrik
 

·
Registered
Joined
·
10,475 Posts
I have 4.10's now with 26" tall tires, I will go out on the highway and see for myself. I could have sworn I turn more RPM than that (when not in OD). I had a car with 4.56's before as well and I know it buzzed pretty high. Mine is automatic, so I guess that could be the difference.

Royce
 

·
Registered
Joined
·
61 Posts
Discussion Starter #7
I have 255/60-15 in back...
thanks for the reply!

------------------
67 std/dlx coupe L-30/M-20, bolero red/parchment, project
 

·
Registered
Joined
·
1,108 Posts
I have 4.56's w 255/60's and turn 3900-4000 at 70 mph.Man does it buzz all the time.But they are great at the strip.
 
1 - 8 of 8 Posts
Top