Choices of HIPO trans?

Cbarton

New Member
Feb 27, 2003
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Santa Ana, CA
As I am getting closer to getting my 427windsor motor for my 65, I am starting to wonder how long my tremec may last behind it. I will be making close to 600ftlbs of torque. What options are there out there for 5 speeds that can handle more than 500 ftlbs? Am I going to be forced to run a 4 speed?

Chris Barton
 
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I think a little more info will help. What rear gears are you running? Are you going to run slicks at the strip? How often?

Describe how you plan on driving and using the car.
 
What's wrong with a 4 speed ? I run one in my 89 Ranger behind the 331 stroker that's now in place. Ain't got overdrive, but I don't have to worry about the motor trashing it--- ever. I can buy a LOT of gas with the $1500+ price I saved over a 5 speed. :D :D
 
D.Hearne said:
What's wrong with a 4 speed ? I run one in my 89 Ranger behind the 331 stroker that's now in place. Ain't got overdrive, but I don't have to worry about the motor trashing it--- ever. I can buy a LOT of gas with the $1500+ price I saved over a 5 speed. :D :D

hahaha id love to see that sleeper
 
D.Hearne said:
What's wrong with a 4 speed ? I run one in my 89 Ranger behind the 331 stroker that's now in place. Ain't got overdrive, but I don't have to worry about the motor trashing it--- ever. I can buy a LOT of gas with the $1500+ price I saved over a 5 speed. :D :D
D. Hearne - can you post the possible junkyard sources of Toploaders? People want quite a bit for rebuilt toploaders from what I've seen - nearly as much as a 5 speed.

They came in Mustangs, but I know I won't find one of those in a junkyard here. :( What else, big cars and pickups? What years?

Thanks!
 
I bought mine on ebay for $150. :D three years ago. The guy listed it wrong. :rolleyes: Said it was an SROD from a 79 Stang. Didn't post pics with his auction. Big mistake on his part. Turned out to be a small block wide ratio Toploader. Pays to be alert on mis-listings, especially with the buy it now feature. :D As for junkyards, I agree with you there, they're few and far between. Look at the litttle yards, the kind with old stuff and lots of weeds. If you can get even one needing rebuild or repairs, they're not hard to rebuild. I can do them for others if they need. A complete rebuild kit runs about $150. More if it needs gears. :nice: I bought two Toploaders three years ago also thru an ad in a local ads paper for $150. Both needed repairs. Sold em both to David Kee for $800 last year.
 
3.50 tracklock. It will never see slicks on a 1/4 mile but it will see several opentrack events a year. Possibly Nevada open road race which is one reason I would hesitate to swap to a 4 speed as on certain tracks this car should be capable of 140 plus in the straights and for an openroad race 160+...all in all it will be 75% street driven with a lot of sideways second gear action........so I really don't expect the tremec to hold up forever.......but I don't want to be buzzing at 3000 rpm at 75mph either.....

Chris


Hack said:
I think a little more info will help. What rear gears are you running? Are you going to run slicks at the strip? How often?

Describe how you plan on driving and using the car.
 
Yeah, but you're also limited to about a 120mph top end..........


D.Hearne said:
What's wrong with a 4 speed ? I run one in my 89 Ranger behind the 331 stroker that's now in place. Ain't got overdrive, but I don't have to worry about the motor trashing it--- ever. I can buy a LOT of gas with the $1500+ price I saved over a 5 speed. :D :D
 
Cbarton said:
3.50 tracklock. It will never see slicks on a 1/4 mile but it will see several opentrack events a year. Possibly Nevada open road race which is one reason I would hesitate to swap to a 4 speed as on certain tracks this car should be capable of 140 plus in the straights and for an openroad race 160+...all in all it will be 75% street driven with a lot of sideways second gear action........so I really don't expect the tremec to hold up forever.......but I don't want to be buzzing at 3000 rpm at 75mph either.....
Chris

My 3550 is going on it's 3rd year, with over 600 ft. lbs. at the rear wheels.
I have wasted a couple driveshafts through on hard launches.
 
Cbarton said:
Yeah, but you're also limited to about a 120mph top end..........
Well, not quite, more like 130-140. But the speed limit around here is 70 on the interstate, which means I can get away with 75-80. This puts my cruising rpm right into the power band with the combo I'm running ( 331 stroker, Canfield heads, Ford Z303 hyd roller W/1.7 rockers, the Toploader 4 speed, 3.73 rear with 275/60/15 tires) Why build something with a 200mph capability if you can't use it ? Overdrive ain't gonna hold up to those kind of speeds anyway.
 
OK maybe 130, I was assuming you probably had a 4.10 or 4.11 rear gear, but I would think 140 might be a little optimistic....You'd REALLY be taching, what is the 4th gear ratio in your top loader?

I am not looking for 200 mph capability, but with this much torque, utilizing it down low is useless and on the track you want/need the power higher up the band so it is more usable. If I want to be able to sustain 160 then I need to be able to reach 180 (theoretically)............now, I may never see 180, but I have seen 160 before (previous car was a M5) and I will settle for nothing less with this car. This is my dream motor....and I am lucky enough to finally be able to put something like this together.....might as well reach for the stars.........

Chris


D.Hearne said:
Well, not quite, more like 130-140. But the speed limit around here is 70 on the interstate, which means I can get away with 75-80. This puts my cruising rpm right into the power band with the combo I'm running ( 331 stroker, Canfield heads, Ford Z303 hyd roller W/1.7 rockers, the Toploader 4 speed, 3.73 rear with 275/60/15 tires) Why build something with a 200mph capability if you can't use it ? Overdrive ain't gonna hold up to those kind of speeds anyway.
 
So you're making over 700ftlbs at the crank? What kind of motor? That would be amazing, I broke my first 3550, in a 89 mustang convertible I had (17psi Vortech, cog belt, TFS heads) in about 10,000 miles of pretty hard street driving (and maybe 100 passes on radials) and I "only" made 390 ft lbs (uncorrected) at the wheels (7 years ago)

How many miles on it in 3 years? With that kind of hp it can't be a daily driver, sounds like a dedicated strip/cruise car that probably sees little milage..the 3550 is rated at only, what? 400 ftlbs of torque?

Chris




slapper said:
My 3550 is going on it's 3rd year, with over 600 ft. lbs. at the rear wheels.
I have wasted a couple driveshafts through on hard launches.
 
Cbarton said:
So you're making over 700ftlbs at the crank? What kind of motor? That would be amazing, I broke my first 3550, in a 89 mustang convertible I had (17psi Vortech, cog belt, TFS heads) in about 10,000 miles of pretty hard street driving (and maybe 100 passes on radials) and I "only" made 390 ft lbs (uncorrected) at the wheels (7 years ago)

How many miles on it in 3 years? With that kind of hp it can't be a daily driver, sounds like a dedicated strip/cruise car Chris

Yea. 393 with 10psi blow through from a Procharger.
It a street legal 68 Fastback that I drive about 6K miles per year.
I'll take it to work during the summer months, and down to the road course and strip occasionally.
I was dying to get into the 10s last year and put on ET Streets when I started wasting driveshafts.
 
Cbarton said:
OK maybe 130, I was assuming you probably had a 4.10 or 4.11 rear gear, but I would think 140 might be a little optimistic....You'd REALLY be taching, what is the 4th gear ratio in your top loader?

I am not looking for 200 mph capability, but with this much torque, utilizing it down low is useless and on the track you want/need the power higher up the band so it is more usable. If I want to be able to sustain 160 then I need to be able to reach 180 (theoretically)............now, I may never see 180, but I have seen 160 before (previous car was a M5) and I will settle for nothing less with this car. This is my dream motor....and I am lucky enough to finally be able to put something like this together.....might as well reach for the stars.........

Chris
All Toploader 4 speeds had a 1:1 fourth, with the exception of the late 780's 3+1 OD Toploader. Mine's a 1:1. 140 isn't optimistic, it's a reality. Hell even the warmed over 5.0 I had in there last week would hit 125 without problem at 5500 rpms. The 331 is capable of turning 7500 rpms, 140 is only 6300 rpms, I've no doubt the 331 has the cahoney's to pull those rpms in fourth. Most if not all the road tests I've seen on Vette's and others would pull the highest MPH in direct ( 1:1 ) not in overdrive, it takes more torque to pull the same speed in OD than it does in direct. Trying to go that fast in OD builds up a tremendous amount of heat as a result. Not good for any transmissiion. Overdrive just isn't suited for high speeds, if it were they'd have been using it in Nascar. Classic Stangs aren't the most stable cars at those speeds either. I know, cause I've been in a 67 FB at 155 mph.
 
1320stang said:
Liberty 5-speed.
liberty, jerico, g-force, nash , richmond. I guess most here only think tremec build 5 speeds just like they think afr is the only head manufactor. I would run a toploader before a tremec 5 speed if strenght was a concern, and if that doesnt work then the only choice is to step up to a high dollar trans. Jerico can build you a four speed that will work great for street and strip with a low first gear ratio so you dont have to go wild on the rear gear ratio, plus they are much lighter and beyond strong.
 
Well, nash and richmond aren't rated that high, I will check out the rest.

Thanks

Chris


fastback brian said:
liberty, jerico, g-force, nash , richmond. I guess most here only think tremec build 5 speeds just like they think afr is the only head manufactor. I would run a toploader before a tremec 5 speed if strenght was a concern, and if that doesnt work then the only choice is to step up to a high dollar trans. Jerico can build you a four speed that will work great for street and strip with a low first gear ratio so you dont have to go wild on the rear gear ratio, plus they are much lighter and beyond strong.