Boosted b6teen

Auto gurus, I am needing second opinions on what should be done to a TH350 that will be behind a I/C/E 5.3 with possibly a 100 shot. It will be 70% street use and on DRs at the track. It will also be in a lighter Foxbody. Just wanting to see if your guys recommended parts match up with the transmission shop, or if they are trying to over sell me on stuff. Thanks for any input.

WE TODD DID

iTrader: (2)

Other than a hardened race, a 350 mostly comes down to builder technique, for the power level you have. Basically, you need to keep accumulation on the 1-2 shift, and don't get too agressive with the feed holes in the separator plate.

Boosted b6teen

Ok, so I should look into a hardened sprag race and a good rebuild/performance kit?

Also, what advantage do you gain by putting 5 frictions in the tranny?

Thanks again guys for the input.

WE TODD DID

iTrader: (2)

You have more friction area in 3rd gear. If set up right, it will hold more power in 3rd. Also, dual feeding 3rd is a must. One way, is with a transfer plate that comes with basic "shift Kits", and the other (preferred) way, is blocking a feed hole under the pump, and leaving the center seal out of the drum. If you have an experience builder, they should already know this. You really don't need a high dollar rebuild kit. Regular borg warner frictions will do just fine.

Boosted b6teen

Thanks for the input. Im storing all this to memory for when I talk to other tranny builders and see if they say the same thing.

LSXFORMULA99

iTrader: (12)

i wouldnt even do the swap. i had one for a month and took it out. it sucks on the street not having overdrive. i took mine out and went back to a build 6 speed.

Boosted b6teen

A T56 is out of the question, after buying one in good shape and then fabbing up the hydraulic system and getting the right clutch set-up I could have a built 4l60/80e and maybe more. And I can have a much stronger and cheaper tranny buy going with a TH350 over the 4L. And according to my gearing calculator with my gearing Ill be at 3100-3200rpm at 66mph. I think I can live with that.

LSXFORMULA99

iTrader: (12)

yeah that will work good, just not any fun for me. nothing better than going 10s banging gears. i would rather go 10.90s with a 6 speed than 10.50s with a auto. thats just me.

yak

iTrader: (15)

what size gear do you have? I had 26" tires, 4.10 gears, th400 with a 5k stall and I was turning like 4300 @ about 65, but that converter was very loose.

Boosted b6teen

Im running 3.73 gears and a 315-35-17 tire.