need help choosing gears

Moderator: Moderators

need help choosing gears

Postby mosseater » Wed Feb 27, 2013 8:05 pm

need some assistance choosing gears for a9".....1971 vega wagon 350 stroker, with 330 hp to tires 331 torque to tires,,,,,,powerglide with 1.76 (i think)...around 4000 stall.... 9" with 4.88, 29" slicks............with this setup, I was running outa engine before finish line rev limiter was set at 6600 and kicked on before finish line best 1/4 time of 11.39 @113 but rev limiter was on not very far from end......I am not very schooled in racing or wrenching.....I only have a cresent wrench......maybe view ing my camera i had installed at the trackwill help ???? youtube mrmosseater or search bremerton raceway vega ps... I am going to downsize my tires to 28" drag radial type...and i want to cross the line between 6200- 6300 rpm.maybe theres some one out there who has the same set up........Dean
Cope Bros. built 383,750 double pumper,dart heads,2 speed,488 gears, 29x12 hoosiers..
User avatar
mosseater
 
Posts: 12
Joined: Wed Aug 03, 2011 7:42 pm
Location: port orchard,washington

1971 Chevrolet Vega Kammback


Re: need help choosing gears

Postby speedphreake » Wed Feb 27, 2013 8:14 pm

my calculations would put you around a 4.33 gear to get you closer to crossing the line around 6300 rpm.
71 Vega hb
11 2500HD duramax
User avatar
speedphreake
 
Posts: 634
Joined: Fri Dec 22, 2006 11:12 pm
Location: Cape Cod, MA

1971 Chevrolet Vega

Re: need help choosing gears

Postby RockDaddy » Wed Feb 27, 2013 8:19 pm

What do you shift at?
Image;Image

Thx to Billy Briggs and the guys at http://www.motorcityspeedonline.com
RockDaddy
 
Posts: 322
Joined: Thu Feb 07, 2008 9:17 pm
Location: Michigan

1972 Chevrolet Vega

Re: need help choosing gears

Postby Fasterthansome » Wed Feb 27, 2013 8:22 pm

STRAIGHTLINE RACING
Home of the world's quickest stock suspension H-body
Fasterthansome
 
Posts: 749
Joined: Tue Jul 11, 2006 8:58 am

Re: need help choosing gears

Postby mosseater » Wed Feb 27, 2013 8:33 pm

I believe i shift at 6000
Cope Bros. built 383,750 double pumper,dart heads,2 speed,488 gears, 29x12 hoosiers..
User avatar
mosseater
 
Posts: 12
Joined: Wed Aug 03, 2011 7:42 pm
Location: port orchard,washington

1971 Chevrolet Vega Kammback

Re: need help choosing gears

Postby mosseater » Wed Feb 27, 2013 8:36 pm

I guess 4.33 is a good starting point...I can always go up or down in tire size if needed....
Cope Bros. built 383,750 double pumper,dart heads,2 speed,488 gears, 29x12 hoosiers..
User avatar
mosseater
 
Posts: 12
Joined: Wed Aug 03, 2011 7:42 pm
Location: port orchard,washington

1971 Chevrolet Vega Kammback


Return to Drag Racing

Who is online

Users browsing this forum: No registered users and 1 guest