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-   -   transmission/ gearing help (https://www.racingjunk.com/forums/showthread.php?t=29967)

hotrod1994 03-02-2011 09:18 AM

transmission/ gearing help
 
im thinking about running 4.10's with a th 350 in a 76 camaro i live 15 miles from town and want a cruiser its 55-60 all the way there will i be OK without it whining too much and what about interstate ?

fla1976 03-02-2011 09:44 AM

What size tires?

hotrod1994 03-02-2011 03:39 PM

29x12.5x15

mytmouz 03-03-2011 08:53 AM

It will suck after a while. I have 295/50's on my v-8 blazer daily driver, which is a tad over 27 inches tall, and 3:73's. With the t350, I was a tad over 3000 rpm in drive @ 55 on the interstate, and everyone was passing me like I was tied to a post. I ditched the t350 for a built 700r4, and cruise 70'ish @ 2200 rpm...

ballsout1 03-03-2011 03:52 PM

i`d say your good , 29 " tires at 55 its gonna be around 2500 rpm. i`d personaly go w/4.56 `s and that would keep it just under 3grand but i guess it depends on if your driving it every day etc, etc, etc.

BEAST477 03-03-2011 06:10 PM

It will depend a lot on your converter. My '66 Nova I had with 31" tires and 4.56 gear was 3100rpm at 55mph. So there are variables. Your setup will be a little different, but now you have a few choices.

oldandtired 03-05-2011 04:06 AM

Let's just pretend you will drive 65 MPH - because you know you will!!

A manual trans car @65 with 29 tall tire is 3095 RPM.

Add converter slippage and you're cranking it up.

I agree with mytmouz, go with a 700R4.

hotrod1994 03-05-2011 11:40 AM

what kinda off converter do you guys suggest with 4.10 or 4.56


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