Opinions wanted on a tranny swap!

AustinTom · Post by **AustinTom** » Tue Oct 02, 2007 4:21 pm

The T-19 has the same 4th gear ratio as the T-18: 1:1. It will help with cruuising but not at all with freeway speeds. I have 3.50 gears with a Np435 and it works just fine, but I hardly ever use the granny 1st gear.

averagef250 · Post by **averagef250** » Tue Oct 02, 2007 4:23 pm

The close ratio T-19 is a nice tranny, but $920 for a rebuilt one is excessive. I charge $475 to rebuild one and cores are an easy find in the $150 range.

If you're on a budget, just keep your eyes open for a T-19 from an 80's Ford 2wd. They're pretty much all 4:1 first gear.

If you're running 31" tires, 3.50 gears are too low to use first gear. You'd be starting off in second. 3:1 or 3.25:1 gears would be a better setup.

mrtleavitt · Post by **mrtleavitt** » Tue Oct 02, 2007 4:58 pm

How could I tell a t19 from a t18 in the junkyard? From what I know they look identical from the outside. How could I tell the 4:1 ratio from other ratios without tearing into it or driving it?

BobbyFord · Post by **BobbyFord** » Tue Oct 02, 2007 6:10 pm

I like 3.00:1 gears with a C6

Post by **FORDification** » Tue Oct 02, 2007 6:55 pm

mrtleavitt wrote:How could I tell a t19 from a t18 in the junkyard? From what I know they look identical from the outside....

http://www.fordification.com/transmissions-manual.htm

averagef250 · Post by **averagef250** » Tue Oct 02, 2007 7:28 pm

80's Ford truck's did not use T-18's. They only used T-19's and NP435's. The 435 is obvious- It has an aluminum top plate.

I'm pretty sure they're all 4:1 ratio.

MaxKlinger · Post by **MaxKlinger** » Thu Oct 04, 2007 4:20 pm

What is the tallest rear end ratio available for the 9"? I've seen 3.00:1, is there anything taller?

AustinTom · Post by **AustinTom** » Thu Oct 04, 2007 4:38 pm

I bet you could get some 2.73 if you looked hard enough

BobbyFord · Post by **BobbyFord** » Thu Oct 04, 2007 5:29 pm

Try old Lincoln's.
I got a set of 2.82's out of one.

norville · Post by **norville** » Fri Oct 05, 2007 5:43 am

I went with a TOD(170rts?) 4spd OD tranny. I cruise @70 running 2600 rpms with my 4.11's and 31" tires.

easy swap I did have to get my center driveshaft stretched $110. It's a 3spd + OD for the 4th gear. They came in mid 80's 150/250's It's no racing tranny but fine so far for daily driving.

bob

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Opinions wanted on a tranny swap!

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