Welcome to the Ford Mustang forum built for owners of the Mustang GT350, BOSS 302, GT500, and all other S550, S197, SN95, Fox Body and older Mustangs set up for open track days, road racing, and/or autocross. Join our forum, interact with others, share your build, and help us strengthen this community!
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I rebuilt the rear in mine last summer complete with a Detroit True Track and 4.10 Ford Performance gears without removing it from the car. It can be done, but in hindsight it would have been easier and quicker to remove the whole housing...
Thanks Blacksheep. That’s great! After some review of the spreadsheet and my min/max corner speeds, I think I’ve finally decided on the FRP 4.10 gear set and their rebuild kit for the diff clutches. As much of a pain as it will be to pull the... (see full post)
If you already have rpm data for your track, you can use the ratios between current and proposed gears to find new rpm. For instance, 3.73 is 1.0507 shorter than 3.55 (simply 3.73 divided by 3.55), if you're at 6000 rpm at the end of a straight...
Yes. I’ll be doing a full setup on it. I’ve got some experienced local help here, but it’s worth noting for anyone else not familiar with setting up new rear end gears that there is way more to it than just unbolting and reinstalling the parts... (see full post)
Thanks. I’ve found a couple online since I posted. I’m going to build a spread sheet from there I think unless someone has one already built. (see full post)
So I’m about to order a new set of rear gear and pinion. The current 3.55 ratio is too long for my track- on a warm day, I’m in 3rd for all except one slow speed corner in 2nd. So I’m hoping to look at where my RPMs are going to be at my current...
That’s actually the only track I go to!
I ran my dads S197 there last season to get my lapping licenseCornerz a member of this group who you have apparently talked to before is actually my dad and if the one who suggested I join this forum
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