View Single Post
Old 02-24-2016, 12:44 AM   #757
trkfrk
Registered User
 
trkfrk's Avatar
 
Join Date: Jul 2010
Location: Las Vegas, NV
Posts: 969
Re: Started my first frame off - 72 SWB LS1, 6-spd manual

Quote:
Originally Posted by Bowtiguy View Post
That's interesting. I had a little different experience and I think its due to the differences in gear ratios in each trans. I'm running a TR6060 out of a 14' Camaro SS ( along with its stock hydraulic clutch) and the ONLY time I use 1st gear is if I'm starting on a hill. I can easily start in 2nd gear with my 4:10 rear gears that Mark Williams axles installed for me when widening my 12 bolt and doing the c-clip delete.

The motor is a VVT LC9 out of a 13' Silverado. The issue I have is bogging at 75mph+ on the highway pulling 6th gear moving this brick down the road. But I'm also comparing it to my old LS7 C6Z that pulled 1800 rpm at 80mph and had 100 extra cubes and 350 extra hp.

Time for heads/cam!
I totally agree with you, on the transmission gear ratios. Not until researching, did I learn which rear end gears to change to. I learned there are 2 different T56's; a close ratio and a wide ratio. I also didn't realize that my wheels and tires outside diameter, made a major difference. My outside tire diameter is 5" taller than the Pontiac TA with the same drive train.
__________________
Mark

1972 C10 SWB LS1/T56 6 speed trans/4:56 posi with 5.5"-7" static drop/Boss 338 Wheels 18"x20"

My build thread: http://67-72chevytrucks.com/vboard/s...d.php?t=424609.

My first start up http://youtu.be/R899YQ1OcjU
trkfrk is offline   Reply With Quote