I'm building a 36 Plymouth coupe period Gasser, building a small journal 327 (forged internals) with a 6-71...600 hp on pump gas, 700+hp race fuel and more boost. The real question here is what 4sd trans will hold up to "wheels up" launches? I have an Aluminum case T10-1C circa 1961/62 with a 7B tailshaft. Can this be built up to handle the abuse? Should I look elsewhere? Doug Nash? Muncie? What are you guys running? Sent from my moto g(7) power using The H.A.M.B. mobile app
That early T10 is not going to hold up to the kind of abuse you're predicting. They were only rated at 300 horse or so. I believe most of the successful SE Gasser racers are running something called a Hightower modified Toploader. Might be worth investigating. Devin
Torque and where the rubber meets the road is the real concern. Consider a Richmond Super T-10, not bulletproof but none of GM's production trans will hold up if serious dragstrip duty is planned. Here is the 4 speed that my roadster has in it, the Richmond Super T-10
Maybe one of these? https://www.riversidegear.com/munci...32-out-call-toll-free-usa-1-877-614-4327.html There are several suppliers.
lots of guys were going to slushboxes when the power got up that high. I run a 400 with mostly old stuff inside behind my blown 427. It's set up for manual shift, and uses an early switch pitch torque converter. Like he said, if you want to run a 4 speed, you probably need to step up to something modern.
If you want it to look similar to a Muncie / BW Super T10 then consider a Tex Racing T-101 You can alter any gears [including input/countershaft] to suit your needs.
Thanks for all response, we live in a technical world now. Amazing machinery, cnc, high tolerances etc. Knowledge that didn't exist in the 60's/70's. Not everyone was running a b&m automatic. I know, tire compound wasn't as advanced as today's compounds...in the late 60's/early 70's they became knowledgeable...rubber compounds became "sticky'. The 409 was a 425 hp as advertised. I know alot of these guys were running 4spds successfully. Doug Nash started becoming known in 63...yet to be known for his transmissions. My question is, what 4spds were they running then? Muncies? I should probably sell my 61/62 T10-1C to a Corvette guru. Guess I'm looking for a Doug Nash 4spd to keep with period Nostalgia. Guess I was hoping for that one guy to chime in and say, yeah...I did it but got build it this way...lol! Wishful thinking...maybe I'll build it up anyway...see what happens Sent from my moto g(7) power using The H.A.M.B. mobile app
Wheels up w/a period correct production 4spd will work, briefly. You're right in thinking it needs bullet-proofed. It's the reason most stick guys just move up to the current crop of race-ready units & move on. ($$)
Yes you will be wasting your money on any Super T10 or T10&Muncie for drag racing the G force 101A is a great box! its also how you set your clutch up and with the correct slippage
If you want to run a production trans, a top loader is your best bet. The aluminum case GM stuff is not going to hold up.
A good adjustable clutch is whats going to keep the transmission alive, but that T10 isn't going to survive long with that much power going through it.
The old T10 gears from that era are not very robust. Narrow teeth sections,,,compared to later models,,,,,the same goes for the cluster. When you compare the width to later models,,side by side,,it is painfully obvious. That is why they started changing the gear sets after that time period,,,mid to late 60’s saw an enormous jump in strength. Like the guys said,,,,,at the minimum,,,use a Super T10,,,,your pocketbook will thank you. And to be fair,,,on the track,,,,,,at your projected HP levels,,,it won’t last too long. Tommy
If you even consider a Toploader make sure it is a big block model with the big input shaft otherwise you would be better off with what you have. My toploader lasted 3 passes with a small block Ford before it twisted the input shaft. Most of the SEGA guys use Hightower or G force. Do you need synchros ? With your blower you will make a lot of torque and that kills driveline parts. If you are not rule restricted, then just run a turbo 400. I ran a almost stock 400 except for a trans brake valve body and redline clutches in a nitrous fed 477 big block that dyno'ed 800 hp on straight motor and over 1200 h.p on nitrous. I lasted 2 season's of racing it at least 40 weekends a year .
Quain Stott can help you decide which 4 speed tranny is the best since he is the man behind Southeast Gassers. HRP
^^^^^^^^ Tex T-101....killer trans, dog syncros if you want to call them that. I shift with no clutch at El Mirage and Bonneville. Thousands of gear ratio/combos available. Most all old NASCAR stored parts.
Ole Bill Smith over the years just fixed whatever broke on his 55 chevy Htp. He sidesteps the clutch at high RPM with a 86 pound flywheel. His transmission is a Chrysler 4 speed like they used with a 426 HEMI. I once owned a N case close ratio T 10 that I got from a 64 galaxie that had a FE that I beat on pretty hard. I never tore it up. however I damaged the syncros and it fell out of third gear when I decelerated.
There's no nostalgic "era correct" 4 speed trans going to hold up to that power, that's why they go to "non era correct" trannies, all is not what it seems under the sugar coat.
We ran a Chrysler hemi box that was a done over for racing and it worked great. But a G-force is more readily available as is a Jericho. Don't use a heavy flywheel and you will be a little easier on your parts. Pat
I use an old school Toploader behind a 800+hp nitrous assisted 355. Same transmission since 2011 with plenty of wheels-up hi-rpm launches, still no broken gears. It's even a small in/out Toploader, the key to it's long life is that the car was used as a test bed to develop the ClutchTamer clutch hit controller. It's an off topic car so I won't post a pic, but here's a link to it's web page. Just scroll down to find the details on the transmission as well as the ClutchTamer install... http://grannys.tripod.com/20102.html The tech to make a ClutchTamer was available back in the day, just wish I had invented it 50 years ago Lots of wheels-up racers using it, here's a link to a magazine article about the 'tamer.. https://www.racepagesdigital.com/ta...zSyr9esqDFDyVmYWZxM2LDBvocnrGsKmbiUHSYKYh3ZuU Grant
So you want to be traditional and live the life of days gone by. Sorry might as well build the new era gassers with high dollar transmissions and aluminum blocks ect...That isn't traditional. Sorry anyone can build a so called gasser with a big wallet...flame away. 800 hp? Money always spoils everything fun. Can't wait for the responses. This is still a traditional site right? 700 hp 327 you better be looking at that first. That's a lot of beans out of a 327. . Reliably. Lippy
Sorry, but I'm a little puzzled about how it is "no fun" and "spoils everything" to buy the best driveline parts available? In my experience, spending the $ up front, then making pass after pass without scattering your junk and your oil all over the track is far more fun (and cheaper and safer) than breaking your stuff every weekend. Back when I was a teenager, a 14 second car was respectable, and junkyard transmissions were pocket change. None of that is true today.
Either a Jerico or a G-Force with a soft-loc style clutch. They both usually have used units to sell.
The same goes with that whole Muncie versus Saginaw yawwwn. People are always saying "those Muncies are expensive" and I can swap a Saginaw in a couple hours, I guess I just don't like doing things twice.
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