Re: 1970 SS 12 BOLT gear ratio's?
331 to 342 max for all arround comprimise between decent performance when getting into it and reasonable cruise rpm with a non o/d trans,maybe even 308 if your not into the peformance end that much.
But gear like 355/373/410 etc gear is too much for reasonable street duty these days $5 gal fuel without an o/d trans and or very tall tires IMHO.
Depends on what you want,not what we prefer becausee some people think 373 gear with non o/d trans is fine on the road with 26" tires turning APPROX 3k rpms @ 60mph which can get old quickly depending on setup/how loud it is. If thats you go for 373 ,but if not go for the 342 331/331 is only avail used or nos on ebay or local swap meets but there is talk ofthe 331's being mfg's again but not yet from what i understand.
1969 CHEVELLE SS396,ORIGINAL #'S MATCH,GOT IN 1978,(In 2001 rblt/bored original 396 .030 to 402)/M20/12BOLT/3:31'S
2002 MAXIMA (DAILY DRIVER/1 owner,GOT 3/2013 w-44k miles)
2009 HD ELECTRAGLIDE CLASSIC ULTRA (GOT 11/14 W-9,700 miles)
Last edited by SWHEATON; Jul 12th, 08 at 1:05 PM.