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Forum: Pontiac - Street 09-13-2021, 04:40 PM
Replies: 64
Views: 5,684
Posted By JLBIII
Already doing that since speedo doesn't work. LOL...

Already doing that since speedo doesn't work. LOL Also use GPS for mph.

Lots of good input here. Any advantage the keeping TH400 and going with Gear Vendors OD vs replacing it with an OD trans....
Forum: Pontiac - Street 09-11-2021, 08:38 PM
Replies: 64
Views: 5,684
Posted By JLBIII
I ran 4.11 and 3.73 back in the 70's with small...

I ran 4.11 and 3.73 back in the 70's with small block Ford's and Chevy's with one being a 69 Z with DZ engine. Just sold my 2010 Camaro SS that had 3.9l gears. Right now I have 26.5" 15inch tires on...
Forum: Pontiac - Street 09-11-2021, 06:30 PM
Replies: 64
Views: 5,684
Posted By JLBIII
Gear choice for street

Currently have 2.56 gears and Saf-T-Trak rear un my 68 FB with 400HO and TH 400. I'm looking at replacing gears and carrier to either 3.36 or 3.55 and the correct posi unit. Plan to eventually put in...
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