Drive line upgrade

[BackwithaFury]

Working on a 70 383 to 496 stroker. I've seen a ton of info in threads, always appreciate input. Using 440 Source for the kit and other parts. Aluminum heads ,525 lift cam, Edelbrock RPM Performer, DUI igntion, 850 cfm vac sec carb. HP manifolds. 727 -shift kit , 2500 stall, 3.55 sure grip. 8 3/4 rear end. 26" radiator- new enhanced core
I'm sure I missed a few details, but I have a few questions for you guys who have been there done that. This is a street cruiser with air conditioning.
Do you run 2.5" or 3" dual exhaust? Does anyone have a best electric exhaust cut out, Hooker ,etc. Is a 3/8" fuel line from the stock fuel pump to the carb good enough?
What are the largest size 15" radials I can put in the rear ? I assume 235/70R/15 in front.
Can't wait to get it back from the machine shop.

 

[SportFury70]

Have 2.5 inch all the way back on all the cars. In my opinion, the TTI exhaust kit is the way to go. It's your car your opinion etc, but I would not suggest cut outs as they sound like crap in my opinion

 

[furious70]

3" tail pipes are really hard to fit, to do it again I might do 2.5 after the mufflers.
275/60's on a 4" backspace rim. I'm not sure if you could fit a 295 if you trimmed the wheel lip and ordered custom backspace rims

 

[Davea Lux]

You can get away with 3" to the mufflers and 2.5" after unless you plan to dump the pipes out under the rockers (not recommended).

Dave

 

[Rapidtrans777]

What are the largest size 15" radials I can put in the rear ?

275/60-15's on 15x8 with 4" backspace. I had to trim about a 1/4".

 

[twostick]

View attachment 332037
275/60-15's on 15x8 with 4" backspace. I had to trim about a 1/4".

I had 275's on my 66 on 15x8 with 4" BS. They were close on the skirt but no trimming required. Lots of room on the inside so 4.5 BS would have been perfect.

Kevin

 

[Turboomni]

275/60/15 on my 69 Fury III 4 1/2 inch back spacing. 8 inch rim.

 

[LocuMob]

275/60/15 on my 69 Fury III 4 1/2 inch back spacing.


View attachment 332038

That looks roomy.

 

[BackwithaFury]

Thanks for the replies. How wide of a tire can I go with the stock road wheel ?
Should I be upgrading the alternator during the rebuild. Charged fine before.
Very nice to have the forum, makes the project easier. Thanks again.

 

[furious70]

I put a 275/60 on a 7" rim but it wore out the center on the tire early. 8" it's much better

 

[stubs300]

Thanks for the replies. How wide of a tire can I go with the stock road wheel ?

That all depends on how wide they are now. I have 235's on 4.5", I was told I should go wider as this stress's the sidewall. I don't have a problem.

Should I be upgrading the alternator during the rebuild. Charged fine before.

Are you installing high amp electronics, stereo, etc.? If it ain't broke, why fix it? Good Luck