2 speed junk

Hey guys I was wondering if anyone has heard of API transmissions outta Canada , I wanna get rid of my coan 2 speed and go with a 3 speed my car still don't 60 foot I've messed with 4 link angle , shock adjustments , and tire psi, I've even tried leaving lower on the two step and let the converter flash , on the trans brake or foot brake it doesn't matter. It weighs 3500# and 1.48 is the best 60 foot it'll do

Others will reply but I think you need some converter help. No reason that 2 speed won't 60............ It aint the tranny.

I guess I should have added the converter is a 5200 stall by coan also they used my dyno numbers . Rear gear is a 4.30 , and the tires are 33/17/15 MT

whats the motor combo? Sounds like they missed the converter setup IMO

572 ci 815 hp @ 6600 758 ft.lb. @ 4800 12.1 comp. .740 lift solid roller I leave at 3800 on the brake and shift at 7000 I use to leave at 4600

what diameter is the converter?

jason wrote:Hey guys I was wondering if anyone has heard of API transmissions outta Canada , I wanna get rid of my coan 2 speed and go with a 3 speed my car still don't 60 foot I've messed with 4 link angle , shock adjustments , and tire psi, I've even tried leaving lower on the two step and let the converter flash , on the trans brake or foot brake it doesn't matter. It weighs 3500# and 1.48 is the best 60 foot it'll do

heard of them a lot. All I have to say is RUNNNN!!!

Just fix your converter issues. Give Lane at PTC or Lenny at ultimate a call.

It's a 9 inch .

Hey Jason,
Before you toss your 2 speed stuff, take another look at the converter and starting line rpm.
My "very much full sized" Ford tips the scales at 3625 or 3735, depending on the class and track.
I use a BTE 10" Top Sportsman steel stator - spragless converter behind both the the 605 and the 514 engines with aftermarket 'Glides with 1.80 low gear. The 605 has been a best of 1.27 with a 4.56 gear ( at BBF Bash) and normally runs low 1.30s with the 4.29 cog and 15X33" tires on the car now. Depending on class, I leave between 4300 and 4900 rpm. The 514, as I recall, is in the mid to high 1.30s.
You may want to reconsider before making the 3-speed swap. Your engine makes enough torque to pull a 2-speed with ease. I have noticed that my car is much more manageable with the 2-speed.
Since going from 3-speed to 2 speed, I have had a lot more success (rounds) with basically the same car and (questionable) driver.
If you call Ray Huffman at BTE, he can give you intimate detail of my converters.
Thanks,
Keith

jason wrote:572 ci 815 hp @ 6600 758 ft.lb. @ 4800 12.1 comp. .740 lift solid roller I leave at 3800 on the brake and shift at 7000 I use to leave at 4600

3800, theres the problem, two step i bet? why did you lower the leave?


-rich

If the converter is wrong the leave rpm is not gonna matter much.........I've had mine from 3000-5500 and it 60's damn near the same.............but the converter ain't junk either.

I use to leave at 4400 yes on the 2 step and brake , I lowered it cause I thought I was on the converter to high , so I figured it would flash and hit alittle harder . The trans is a 1.76.

Needs Converter help. Most converter companies will take your converter and do their thing with it. I'd give someone else a shot at figuring the converter package you need. Any of the guys mentioned above are familiar with the BBF torque and HP capabilities. It aint no Chevrolet shelf deal for sure, these things make unbelievable power.


Good luck,
Travis

Thanks guys for the input I'll call them guys this week and pick there brains

Have you always ran the 33X17 tires?

I agree w/converter. That thing sure is heavy,Why?

jason wrote:I use to leave at 4400 yes on the 2 step and brake , I lowered it cause I thought I was on the converter to high , so I figured it would flash and hit alittle harder . The trans is a 1.76.

not pickin at you here , but I don't understand why people buy into the "flash and hit it harder" concept. The engine is making more hp above torque peak and is not going to "back up" or bog because more torque is at a lower rpm. If you are on the 2 step below torque peak the engine has to climb to peak to reach maximum stall rpm and then climb rpm. This "time" however little amount it is , is wasted time to get to more power.

The only reason a car would slow down leaving at a high rpm is if it spins / big wheelie (both chassis issues) or causes it to over shoot peak hp rpm by a bunch .

Treeyasoon wrote:Have you always ran the 33X17 tires?

Yeah that's all that's been on there I tubbed the car around the tires

Good question .. I don't know why it's heavy the hood and trunk lid is race glass the rest is factory steel, the doors are really heavy and it's got a factory floor.it weighed 3000 with a small block and me in it. I know the a-460 block is heavier than an original 385. Don't know if that makes a diff.

I think a little more rear gear would help too. 33 tires is mighty tall for a glides also taller first gear. may want to try 4.88 gears with that heavy of a car and that tight of converter