Rear end - two questions - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Trip59 · 02-15-2010, 01:42 AM

Ok, so in checking everything out on my new acquisition (72 GMC 1/2 ton, 5 lug 12 bolt rear end) the pinion seal is leaking and slinging BAD. The rear cover is leaking, piece of cake there, but I've never done a pinion.

How bad are they? Is it tricky to get things set, difficult to complete yet easy to screw up?

Second question - installing a 4 speed next week, 2 line Saginaw, ratios:
3.11
2.20
1.47
1.00

Right now with the stock 307 (had a 3spd manual from the factory) but putting in a '67 327c.i. this summer.

What rear end should I have?

Trip

02-15-2010, 01:42 AM	#1
Trip59 Who needs sleep... Join Date: Aug 2009 Location: Middleburg, Florida Posts: 260	Rear end - two questions Ok, so in checking everything out on my new acquisition (72 GMC 1/2 ton, 5 lug 12 bolt rear end) the pinion seal is leaking and slinging BAD. The rear cover is leaking, piece of cake there, but I've never done a pinion. How bad are they? Is it tricky to get things set, difficult to complete yet easy to screw up? Second question - installing a 4 speed next week, 2 line Saginaw, ratios: 3.11 2.20 1.47 1.00 Right now with the stock 307 (had a 3spd manual from the factory) but putting in a '67 327c.i. this summer. What rear end should I have? Trip



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