Rindelmach1 14 Report post Posted November 28, 2019 I need some advise on what I need to buy to upgrade my 69 mach 1 stock 3.25 gears to 3.55? Also I see advance auto parts has them. anyone use them? Quote Share this post Link to post Share on other sites
barnett468 418 Report post Posted November 28, 2019 I only use gears from us gear or the italian version of motive gears. Quote Share this post Link to post Share on other sites
copb8 97 Report post Posted November 28, 2019 Funny, I'm thinking of going for 3.5 to 3.0ish to be able to cruise down the highway a bit more comfortably. You can't go anywhere in Texas without having to drive some distance. Would you change the gears out yourself or have a shop do it? Quote Share this post Link to post Share on other sites
mustangstofear 608 Report post Posted November 28, 2019 If you've never changed gears before, let a professional do it. Quote Share this post Link to post Share on other sites
copb8 97 Report post Posted November 28, 2019 Yeah, that's what I was figuring. Aren't you in Dallas? PM with a quote and how long you'd need the car. Thanks Quote Share this post Link to post Share on other sites
mustangstofear 608 Report post Posted November 28, 2019 We're in Indiana . Quote Share this post Link to post Share on other sites
Midlife 814 Report post Posted November 28, 2019 You're probably not going to see a whole lot of difference going from 3.25 to 3.5:1. I'd spend your money elsewhere. 1 RPM reacted to this Quote Share this post Link to post Share on other sites
barnett468 418 Report post Posted November 29, 2019 1 hour ago, Midlife said: I'd spend your money elsewhere. Yeah, like on some of this! Quote Share this post Link to post Share on other sites
Midlife 814 Report post Posted November 29, 2019 Hell, I'll spend anyone else's money on something like that! Quote Share this post Link to post Share on other sites
Vicfreg 771 Report post Posted November 30, 2019 You can buy a new center section and swap it out yourself. Probably would be break even with the cost of having someone re-do the gear set. I found some guys in Iowa that build gear sets and complete rear ends for race cars and street cars. I ordered a 3:25 posi and got a beautiful set up with Daytona Pinion. They also made me some 31 spline axles. Highly recommended, small business shop. Quick Performance, Ames Iowa. https://www.quickperformance.com/ Call Brydon 641-751-8060, or staticz2229@gmail.com Pics attached. I did the assembly, easy. Pics of finished product also attached Quote Share this post Link to post Share on other sites
Mike65 475 Report post Posted November 30, 2019 I had the 9" rear in my 69 Coupe rebuilt by 8and9inchfordrears in south western NJ. He was very easy to work with & built the rear exactly how I wanted. I brought him the center section & the axles & he built it & even installed new axle bearings. www.8and9inchfordrears.com Quote Share this post Link to post Share on other sites
mustangstofear 608 Report post Posted November 30, 2019 Brydon supply's us with a lot of rearend parts, he's a good guy. Quote Share this post Link to post Share on other sites
