Tmac Posted February 10, 2023 Posted February 10, 2023 Here's the next project. Swapping the open dif for a Yukon posi and some 3.42s. 9 Quote
Michael Boyte Posted February 10, 2023 Posted February 10, 2023 You will definitely feel a major difference with that setup. One you are sure to enjoy !! 1 Quote
DragCat Posted February 10, 2023 Posted February 10, 2023 Just throwing this in the mix for your fluids 1 Quote
Grant MacPherson Posted February 10, 2023 Posted February 10, 2023 Went from the original 2.56 open to same Yukon 3.42 you are putting in, like a different car, love it. Just have to add a few bucks to the tire and fuel budget! 1 Quote
Scott S. Posted February 10, 2023 Posted February 10, 2023 33 minutes ago, Grant MacPherson said: Went from the original 2.56 open to same Yukon 3.42 you are putting in, like a different car, love it. Just have to add a few bucks to the tire and fuel budget! An overdrive transmission will help with the fuel bills. Quote
420ponies Posted February 10, 2023 Posted February 10, 2023 (edited) First off, Welcome to the Club! Hat's off to all the Engineers in the Fleet of Trains throughout the Nation! I'm doing a "clone" Custom of my '72 . Just got all of the stuff to fill my 12 Bolt, ( Thank you Steve). BBC 427 / Turbo 400 ( low 1st gear), 3:73 posi-traction (Yukon), Excel Gears, Moser Street Axles. Adding Rear Disc Brakes. 28" Nitto Drag Radials for now. Should be right around 2,500 rpm's at 65 mph. Motor has been balanced, should run just fine. Like to hear what you're combo is. Before the latest upgrade,355cu.inch,420 HP, 2004R ,3:42 10 Bolt posi-traction, with same tires. It was fun, but I always wanted a 427 in it ! in it ! Edited February 10, 2023 by 420ponies Spellcheck 2 Quote
Tmac Posted February 10, 2023 Author Posted February 10, 2023 1 hour ago, 420ponies said: First off, Welcome to the Club! Hat's off to all the Engineers in the Fleet of Trains throughout the Nation! I'm doing a "clone" Custom of my '72 . Just got all of the stuff to fill my 12 Bolt, ( Thank you Steve). BBC 427 / Turbo 400 ( low 1st gear), 3:73 posi-traction (Yukon), Excel Gears, Moser Street Axles. Adding Rear Disc Brakes. 28" Nitto Drag Radials for now. Should be right around 2,500 rpm's at 65 mph. Motor has been balanced, should run just fine. Like to hear what you're combo is. Before the latest upgrade,355cu.inch,420 HP, 2004R ,3:42 10 Bolt posi-traction, with same tires. It was fun, but I always wanted a 427 in it ! in it ! I've got a stock 350 with a TH350. 12 bolt with 3.42 excel gears, yukon posi unit. Still want a cam and intake upgrade this year but really struggle with all the numbers! LOL to much info out there. Quote
Tmac Posted February 10, 2023 Author Posted February 10, 2023 6 hours ago, Grant MacPherson said: Went from the original 2.56 open to same Yukon 3.42 you are putting in, like a different car, love it. Just have to add a few bucks to the tire and fuel budget! What are you running for eng/trans setup? I wont mind the increased budget as long as the smiles go up as well! And Thank you for the Hats Off! Quote
Grant MacPherson Posted February 11, 2023 Posted February 11, 2023 It is 70 SS, still running 454 and turbo 400 1 Quote
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