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Old 02-01-2023, 07:01 AM   #9
samert111
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Join Date: Jul 2022
Location: Rockford, Mi
Posts: 69
Re: Front Disc brake upgrade kit

Quote:
Originally Posted by Grumpy old man View Post
Don't do it , the 295/50/15 is only 26.6" tall vs the 27.95 tire you have now That combined with 2 " drop blocks will lower your scrub line ,Meaning if you have a flat the U bolts will dig into the pavement , Along with installing a 3.73 gear set your RPMS will climb on the interstate above 3000 , I'm not sure you can put 50 series tire on an 8" wheel . it's a vicious circle .

https://www.tacomaworld.com/tirecalc...0r15-295-50r15

http://67-72chevytrucks.com/vboard/s...d.php?t=354644

https://spicerparts.com/calculators/...rpm-calculator

Thanks Grumpy,
I may need to re-think the drop blocks and go with a drop spring instead. It's already close to the bump stops now so I think it's already been lowered some, I just don't know how much.

As for the engine RPM's at highway speeds, according to the calculator I'm using the, .72 final gear of the Tremec 5 speed would put me at just over 1800 RPM with the current 3.08 gear vs almost 2200 RPM with the 3.73 gear at 65 MPH.

It's the look of the wider 295 tire I'm looking for and yes, I probably will need to go with a wider wheel for it set right and not look like an inner tube on the current 8" wheels if it could even be done.

I may just keep the 3.08 gear once I get the Tremec installed and see how it performs and just go with the posi carrier.

It's all a work in process, but I'm having a great time with it.
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