View Single Post
  #88  
Old 11-10-2020, 11:01 AM
roger1's Avatar
roger1 roger1 is offline
Chief Ponti-yacker
 
Join Date: Aug 2020
Location: Fort Collins, CO
Posts: 778
Default Decisions

I just ordered a set of the Yukon axles that are 1541H Alloy.
Now I'm trying deciding on where to buy the rest of the parts I need for the rear.

I'm now thinking about going with 3.55 gears instead of using the stock 3.23. I think it will be a little bit better of a match with what my plans are.
I've already have a new Lunati 60902 cam and lifters that the seller gave me. I like the specs on this cam. SPECS
My tire diameter should be 27.5" and I'm planning on a 200-4R automatic and an Edelbrock Pro Flo 4 mpfi setup.
I calculate that a 3.55 rear would yield just a touch over 2,000 rpm at 70 mph. The 2.74 first gear would also give a 9.73 torque multiplication which I think would be good using a normal converter rather than a high stall.

I am also going to order an Auburn Gear posi carrier for it. I've had good luck with them. I'm also going try and find new Timken bearings for the pinion, carrier and axle bearings.

__________________
'69 GTO Convertible - Acquired October 2020. An all original project car. Restomod is underway PROJECT THREAD
'83 Chevy Choo Choo SS El Camino - LT1 350/4L60e, Owned for 30 Years, completed 2nd restomod in 2018 PHOTO
2019 BMW 440ix - Twin turbo I6, 8spd auto. PHOTO
'55 Chevy Bel Air Sport Coupe - Ram Jet 350 / T56 Magnum 6spd, Restomod Completed Sept. 2012, Sold Sept. 2021 PHOTO