What would you do?
Printed From: The Ford Torino Page
Category: Model Specific Forum
Forum Name: 1968-1969 Ford and Mercury
Forum Description: Technical discussion for 1968-1969 Ford and Mercury
URL: https://forum.grantorinosport.org/forum_posts.asp?TID=19547
Printed Date: 28-November-2023 at 4:09AM
Software Version: Web Wiz Forums 12.06 - https://www.webwizforums.com
Topic: What would you do?
Posted By: Modn
Subject: What would you do?
Date Posted: 18-May-2021 at 5:47AM
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I purchased a project car month or so ago. '69 Cobra R code SCJ Sports Roof with a C6 and W code 4.30 rear end. Presently is has 3.25 Trac-Lok gears and no sign of the original 4.30's. I can't help but want to take it back to the 4.30's it came with even though the 3.25's would be great for cruising. My cruising area is 10 miles or less really and quite honestly I would rather have have my neck snapped back from a takeoff than rolling 140 mph down the road. I could care less about mpg either. Sounds like I'm decided, but talk me down from the ledge!! LOL ------------- Walt Perry 1969 Ford Torino Cobra R code SCJ428 SportsRoof C6 |
Replies:
Posted By: mkshelton
Date Posted: 18-May-2021 at 5:59AM
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How about the exhaust tone? Higher rpms could mean more drone and that might take away from your enjoyment. But honestly, I love deeper gears and quicker 0-54 mph so I'm not the guy to talk you out of it! ------------- "Sometimes I wonder if I'm actually UNinventing the wheel" |
Posted By: mkshelton
Date Posted: 18-May-2021 at 7:00AM
Does that car have a 9"? If so, go ahead and change it out and send me the 3.25s! ------------- "Sometimes I wonder if I'm actually UNinventing the wheel" |
Posted By: Modn
Date Posted: 18-May-2021 at 7:33AM
The exhaust note I think will be good. Have a '69 mustang with a built 351w, 3.73's in that. At about 2200 rpm I can't stand it with the drone, so higher rpms for me usually. It is a 9", 31 spline. If I'm liking the 4.30's IF I go that way, it's possible!! ------------- Walt Perry 1969 Ford Torino Cobra R code SCJ428 SportsRoof C6 |
mkshelton wrote:Posted By: Modn
Date Posted: 18-May-2021 at 7:39AM
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Looks like the math with original tires (diameter-wise anyways) it would be turning 3300 rpm at 60 mph. LOL, I sooooo want to punch it at 60!! Versus 2500 rpm with the 3.25's. I run, as stated above, 3.73's in my Mustang and like that gear, BUT the Cobra came with 4.30 gears......That's my issue as it was spec'd insane and I would like to experience that insane.....in the car sense anyways! ------------- Walt Perry 1969 Ford Torino Cobra R code SCJ428 SportsRoof C6 |
Posted By: mkshelton
Date Posted: 18-May-2021 at 7:43AM
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Wow, that car would rip, would have quite a bit of torque at the ready at cruising speed. It would likely make a difference in tire wear.
------------- "Sometimes I wonder if I'm actually UNinventing the wheel" |
Posted By: mkshelton
Date Posted: 18-May-2021 at 7:45AM
Haha! 😊 thanks ------------- "Sometimes I wonder if I'm actually UNinventing the wheel" |
Posted By: 72 RS 351
Date Posted: 18-May-2021 at 9:12AM
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How about adding an OD and then install the 4.30's? Gear Vendors has their famous over drive which is simple to install behind most transmissions and TC's. If it was a small block, I'd say build a 4R70W and a controller for it, but that would be more money than the separate OD unit. ------------- Don 73 Ranchero "Sport 72 front end", floor shift/console, planning EFI 7000+ rpm 351-4V &4R70W 73 Ranchero GT 351C-4V &4R70W for sale later. 92 Lincoln Mark VII SE GTC, OBDII 347/4R70W |
Posted By: californiajohnny
Date Posted: 18-May-2021 at 6:50PM
3.25 is a good all around gear not too high not too low i knew a guy that had a 69 mach 1 with 4.56"s in it great take off but in 4th it topped out at like 100  is was set up to drag though...my suggestion: get another 3rd member case and set it up with the 4.30's keep your 3.25's in that case then you could just swap 3rd members if you change your mind ------------- JOHN 74 GRAN TORINO S&H CLONE 74 VETTE CUSTOM 90 S10 BLAZER 4X4 LIFTED 77 CELICA CUSTOM 75 V8 MONZA SUPERCHARGED 79 COURIER VERT. SLAMMED 75 VEGA V6 5 SPD 70 CHEV C10 P/U 68 MUSTANG FB CONVERSION |
Posted By: Modn
Date Posted: 19-May-2021 at 1:21AM
That may be great advice actually. I wouldn't get rid of the 3.25's until i was sure the 4.30's were right for me. ------------- Walt Perry 1969 Ford Torino Cobra R code SCJ428 SportsRoof C6 |