TWSTED

Im swapping out the automatic for a 5spd. I'm to be launching at high rpms too. The car is a '90 mustang, 351w, 4.10 gears, 26" tall rear tire and runs low 12's in the 1/4.

Looking at the TKO500, TKO600 and the G-force. Any one of these better for my application etc?

Thanks.

sn95_331_GT_ yellow

TKO 600

TrimDrip

I have heard the 500 and 600 tkos won't shift at high rpm unless faceplated. Kinda has me on hold on a 500 local for sale.

sn95_331_GT_ yellow

TKO 600RR (.82 OD) in my friends 98, we shift at 7200 all day long, but you HAVE to properly index the trans, and break it in for a while. it was a bit notchy at first, but now it goes from gear to gear like butter.

4th to 5th is absolute sex, 7200 down to 6100 sounds like a full blown SCCA Big Bore racecar.

1st to 2nd kinda bumps over a bit to the right, 2nd to 3rd is almost straight up so on and so forth.

id recommend one in a heartbeat

TWSTED

would there be any fitment issues with me having a 351 in the car?

sn95_331_GT_ yellow

351W=289=302=351C bolt pattern

TWSTED

No i meant with the size or shape of the trans/bellhousing. The starter barely squeezes in there right now with the C4 auto.

TrimDrip

It may not be an issue but, I would look at what it will do to the angle of the driveshaft and whether it will cause a vibration. I doubt it is any different than a 302 though.

sn95_331_GT_ yellow

its the same, the 302 and 351W are basically identical, the 351W is a little wider (very slightly) on the pan, and the deck is taller (8.2 vs 9.5), but otherwise itll bolt up just the same. autos are larger around that area anyways so going to the standard will give you a little more room.

make sure you measure the angle of the pinion on the rear and adjust the trans to match to quell any vibrations.

plus standards use a 157 tooth flywheel autos use 164 also so that is a little more room too.

make sure when you swap to a stick that you use a different compound slick, soft ones will just break things left and right. with a stick you want a little bit of slip off the line (harder compound) to take a lot of the shock out of the initial launch.

TWSTED

Thanks for all the info. and really for the tires? my friend runs 13.4 with his stock T5 dumping at 5500-6000rpm and hooking really well (lifts the left front tire with stock suspension) and it seems to hold up ok. he has aftermarket axles thats about it.

Would this really be a problem with a trans rated at 500ft lbs of torque and my car?