Gear Ratio Help Needed
10-11-2002, 11:01 PM
#1
Junior Member
Thread Starter
Join Date: Jan 2002
Posts: 87
Likes: 0
Received 0 Likes
on
0 Posts
Gear Ratio Help Needed
Im running a 15x8 inch wheel in the back with 275/60/15's and 15x5 205//70/15 in the front. The motor is a Chevy 355 throwing out about 430 horses and Im looking for a better rear gear maybe 4.10's? any suggestions appreciated.. By the way the transmission is a 700R-4 and is used for daily driving
10-13-2002, 05:43 PM
#5
Supreme Member
iTrader: (1)
Join Date: Apr 2002
Location: Waterloo, Iowa
Posts: 4,671
Likes: 0
Received 0 Likes
on
0 Posts
Car: 86 firebird with 98 firebird interi
Engine: pump gas 427sbc Dart Lil M 13.5:1
Transmission: Oldani TH400 w/ BTE 9" convertor
Axle/Gears: 31 spline Moser/full spool/4.11Rich
If he's gonna be running 275/60-15's that is a 28" tall tire, the 4.10 or 4.11's would be the ultimate gear of choice for that. If he was running 275/50-15 26" then yes the 3.73 would be a better match. If his HP #'s are correct and if he ever wants to drag it, he'll never use the full motor in the 1/4, he'd probably only tach about 45-52 hundred depending on stall and cam. For a daily driver that will never see the strip stay with the 3.73 and you'll have a good all around gear. Depending on how light his car is he could easily get away with 3.42's, if it's 3300lbs or lighter.
Thread
Thread Starter
Forum
Replies
Last Post
hectre13
Engine/Drivetrain/Suspension Parts for Sale
7
08-26-2015 08:17 AM