SBF Gear Recommendation Please

[FireSale]

Originally Posted by stang321

I run an aluminum head 302 with 4.30 gear shift at 6500 traps at 6600 its runs 12.30s with a 26 inch tire I would go with 4.88 or 5.14 if you change to 28s

What is the weight of your car? Mine is 3355. It's a 68 coupe.

Last pass of the season I drew a 2016 Cobra Jet at 9:00 am in perfect conditions. Couldn't judge him with a 3 second lead and twitched off the gas at the 1000 foot mark. Blew by me in the traps but I got a 12.64 at 116 with my foot of the gas.

Dale

[stang321]

my car weighs 3150 with me in it its an 88 hatch fuel injected the car is built for stock eliminator but I put in a bracket engine to more dial in chassis while I work on my stock engine combo it needs more converter for sure I run a 3000 stall with an aod with a manual valve body it 60 ft 1.75 runs 12.30 at 110 I want to gear change mine also and im thinking 88s with my 26x9s

[FireSale]

Originally Posted by stang321

my car weighs 3150 with me in it its an 88 hatch fuel injected the car is built for stock eliminator but I put in a bracket engine to more dial in chassis while I work on my stock engine combo it needs more converter for sure I run a 3000 stall with an aod with a manual valve body it 60 ft 1.75 runs 12.30 at 110 I want to gear change mine also and im thinking 88s with my 26x9s

I stall at 3000-3200 too. I tow the trailer in my avatar to and from the track. Want to ditch that if I can find a truck/trailer rig for cheap. I put enough slack in my Caltracs to slip a quarter between the stop and the spring. It helped the launch. Best 60 foot was 1.81 on bias 26 x 10s.

I switched to a Weiland Stealth from an Air Gap RPM and like the results. My 600 cfm Holly DP is on a 1 inch spacer. One of those 4 hole into 2 hole deals.

I have gear calculators, spreadsheets and various geeky stuff (and a bunch of time) to figure speed through the gears by transmission, rpm and differential ratio. Post or PM me with your trans gear ratios, shift points, desired peak RPM ranges and a list of gear ratios you are considering and I will run the numbers if you want.

Good luck on your gear hunt.

Dale