Rear gear ratio?
08-23-2008, 02:41 PM
#1
TECH Junkie
Thread Starter
iTrader: (2)
Join Date: Jan 2006
Location: Fort Wayne, IN
Posts: 3,776
Likes: 0
Received 0 Likes
on
0 Posts
Rear gear ratio? Just curious what you LSX ALL MOTOR car guys are runing for a "rear gear ratio" and "tire size"? Just looking for ideas.
Thanks, Joe
Thanks, Joe
08-29-2008, 10:52 AM
#4
We normally shift at 6500, but have gone as high as 6900. It didn't make enough difference to justify spinning the engine that high though. Our engine was built to handle 7200 or better if needed, but the Fast 90mm intake peters out so early that the power is falling off past 6400 or so.
If we were running a solid roller with a custom sheet metal intake, I'd be running 4.30s and spinning it higher for sure. Our set up is a hyd pump gas engine designed to run on the street and win index/bracket races.
If we were running a solid roller with a custom sheet metal intake, I'd be running 4.30s and spinning it higher for sure. Our set up is a hyd pump gas engine designed to run on the street and win index/bracket races.
08-29-2008, 08:49 PM
#5
TECH Junkie
Thread Starter
iTrader: (2)
Join Date: Jan 2006
Location: Fort Wayne, IN
Posts: 3,776
Likes: 0
Received 0 Likes
on
0 Posts
We normally shift at 6500, but have gone as high as 6900. It didn't make enough difference to justify spinning the engine that high though. Our engine was built to handle 7200 or better if needed, but the Fast 90mm intake peters out so early that the power is falling off past 6400 or so.
If we were running a solid roller with a custom sheet metal intake, I'd be running 4.30s and spinning it higher for sure. Our set up is a hyd pump gas engine designed to run on the street and win index/bracket races.
If we were running a solid roller with a custom sheet metal intake, I'd be running 4.30s and spinning it higher for sure. Our set up is a hyd pump gas engine designed to run on the street and win index/bracket races.
