3:73 or 4:10 in a 347 Stroker... - Ford Mustang Forum

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post #1 of 6 (permalink) Old 03-09-2011 Thread Starter
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3:73 or 4:10 in a 347 Stroker...

i bought a 5 spoke posi built rear that came out of a cobra. It has the moser 31 and all that good stuff and 410 gears. My car now has stock rear with 373 gears. question is, should i slap that rear in and stick with the 4:10's or should i put the 3:73's in there. this is all going in a 87gt with a 347 stroker and stock t5 trans. street/strip car.

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post #2 of 6 (permalink) Old 03-09-2011
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Since the rear is all put together & set up for that gear I would put it in as is, & if you think the 4.10 is to steap you can go back & change it, it's not any harder after it's in the car. Usually has to go to the shop to change anthow unless you want to chew up some gears or you have equip to do yourself.

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post #3 of 6 (permalink) Old 03-10-2011
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I think the 4.10 be a bit steeper than you'll like for street. Especially with the 347...And freeway driving...And gas $3.50/ gal. On the flip side just start in second gear right!

Try it out it'll be fun to drive! And like fastford said it's easy to swap once in the car.

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post #4 of 6 (permalink) Old 03-10-2011
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I think it depends on your camshaft. If you have a mild cam, then stick with 3.73's. If you have a cam that builds horsepower at higher rpm, then go with the 4.10's to maximize performance.

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post #5 of 6 (permalink) Old 03-10-2011
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Also what size tire are you running? What kinda powerband are we talking about? Alot more to picking a gear set than just slapping it in there. Don't fear the gear

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post #6 of 6 (permalink) Old 03-11-2011 Thread Starter
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Ya I'm gonna try the 410s , if nething I can always put the 373s in there. Thanks
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