63 C10 dropped what size wheels

[63frankintruck]

Guys,
Going to order 700R4 SS trans from Phonix Trans in Weatherford Tx. soon. They want to know what size stall I want and what size tires I will be running.
Currntely set up with 2.5 drop spindles 2. inch drop springs and some type of drop springs in the rear from PO.
I using 15 inch rollers on the truck now, but was thinking of going to 17" wheels of possibly bigger and definitely wider tire that what I'm running now.
My question, what size tire can I be running without a bunch of modification (just not sure what is possible current configuration, so I can tell the trans builder.

Also, how big of a stall convert should I be asking for? (L31 crate eng from GM, with ramjet or vodoo cam)
Thanks for any and all replys!
Dan

[LVPhotos]

I run 295/45/18 @ 28.5" tall, 11.6 wide

[rudy62]

I am running 245/50/18 in the rear. and 245/50/17 up front.

[63frankintruck]

Great info guys!
1) Are you guys runnning these sizes without any rubbing?

2)Did you have to do any mods to make these sizes work?

[LVPhotos]

My rears rub sometimes on inner fenders about 1/4" wide 3" long on the bubble, cornering. No mods yet but likely to massage that high point. Might be corrected by ride height. 245/45/18 front.

[rudy62]

My rears only rub when I take them off or put them back on. Have to squeeze them in.

[Shady Rascal]

Dan, as far as your question about appropriate stall speed, ask Scott at Phoenix. He's been there over two decades and has always chosen my converters on the trans' he's built for me over the years. The guy knows what he's doing and will set you up right.

[63frankintruck]

Originally Posted by rudy62

I am running 245/50/18 in the rear. and 245/50/17 up front.

Any other guys running 17 inch wheels on a 63? (Thinking maybe 17's are size that would look good with my stance)

[63frankintruck]

Originally Posted by 63frankintruck

Any other guys running 17 inch wheels on a 63? (Thinking maybe 17's are size that would look good with my stance)

Anyone running wide 17 inch tires on dropped truck like mine that require no mods and don't rub?

[63frankintruck]

Originally Posted by 63frankintruck

Any other guys running 17 inch wheels on a 63? (Thinking maybe 17's are size that would look good with my stance)

Anyone running wide 17 inch tires on dropped truck like mine that require no mods and don't rub?

[oliver63]

i have 18x9.5 on the back and 17x8 on the front. They fit great.

Originally Posted by 63frankintruck

Anyone running wide 17 inch tires on dropped truck like mine that require no mods and don't rub?

[63frankintruck]

Originally Posted by oliver63

i have 18x9.5 on the back and 17x8 on the front. They fit great.

Great info, what size tires are you running with those rims?