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best 300 transmission 
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Post best 300 transmission
I was wondering what transmission would be the best to put behind my 300 considering i am also looking at puting a gear vender behind it. I had my engine dynoed yesterday and it is close to 750 ft/lbs but at only 550 hp. actual ft/lb was 726 but as i said thats close to 750. I'll tell you my engine does have forged 300 flat tops i got from venolia pistons and i'm running a Aerocharger at 10 psi and running it through a powerjection 3 efi carb . engine was complete balanced before i built it and at the dyno it seems to me excetionally well balanced. once again i'm tahanking you in advance for your responses.


Mon Jan 25, 2010 11:14 pm
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Post Re: best 300 transmission
To what use will this be put? Circle track, drag racing, mud bogging, trailer towing?

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Mon Jan 25, 2010 11:24 pm
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Post Re: best 300 transmission
A 1.76 Powerglide. Good for 1000 HP.

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Mon Jan 25, 2010 11:24 pm
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Post Re: best 300 transmission
Got pics?

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Tue Jan 26, 2010 1:53 am
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Post Re: best 300 transmission
it's gonna be a street rod. engines going in a 41 ford pickup with both independant front and rear. the front and rear is out of a mustang cobra . mostly road cruising but ocasstionally might haul a trailor.


Tue Jan 26, 2010 2:27 am
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Post Re: best 300 transmission
Lentech built AOD, can handle the torque and no need for the Gear Vendor OD. Perobably cheaper than built P'glide with bellhousing adapter and GV set-up, AOD more compact.

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Tue Jan 26, 2010 11:01 am
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Post Re: best 300 transmission
only reason i'm looking at the gear vendor is for added insurance and and some gas milage.


Tue Jan 26, 2010 12:07 pm
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Post Re: best 300 transmission
About a year ago, when I was shopping for a trans for my truck, I contacted TCI and another one of the AOD builders. They both said the same thing: If you are ever towing a trailor in the hills/mountains, an AOD can't handle it, and you would be better off to go with a C6.

A beefed up C6 with a Gear Vendor over/under drive is bullet proof.


Tue Jan 26, 2010 2:01 pm
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Post Re: best 300 transmission
how bout a beefed up E40D i was told if built up right they are suppose to be real good don't know a c6 and a gear vcender would give you basicly a 4 speed yes i mean it would 6 but with the 6 gear would actually make a 4 with overdrive thats why i say and E40D. anyone have any input on this perticular tranny.


Wed Jan 27, 2010 8:48 pm
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Post Re: best 300 transmission
Thats a lot of power/torque,please tell us how you built the motor,what parts did you use,crank,rods cam,ect,ect,
I like it already, Pics???Please.

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Thu Jan 28, 2010 12:54 pm
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Post Re: best 300 transmission
bought 96 block got a carbed head ported polished 1.94/1.60 valves 10 to 1 flat top forged venolia pistons, aerocharger turbo with 10 psi , powerjection 3 from retrotek speed, custom ground roller camshaft and roller rockers 1.73 ratio. efi exhaust manifolds with solid pipe conection between them that then goes to aerocharger i'd come close to say that theres no lag in turbo doing it that way either. 2.5 inch pipe out of turbo to Aero Turbine 2.5 in out muffler to y pipe then x pipe duals out the rear. thats all that i can remeber just off the top of my head. pics will be hard to get scince i have no digital camera. the problem i got now is find a good automatic tranny to hold up to it without paying a fortune for it.


Thu Jan 28, 2010 4:02 pm
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Post Re: best 300 transmission
The E4OD shares a lot of its guts with the C6. it's not quite a C6 with an OD grafted on but it's close. However the E4OD requires a powertrain computer in order to operate. you can buy a standalone controller from Baumann http://www.becontrols.com/products/electronicscat.htm but it has some limitations. The C6 with an add-on OD is probably a better bet than an E4OD in a non-EFI application. Have you looked at the US Gear OD? It's a bit cheaper than the GearVendors, with a bit less functionality. http://www.usgear.com/v2od.htm

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Thu Jan 28, 2010 6:56 pm
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Post Re: best 300 transmission
Id like to do this build,minus the turbo,just the all motor build,where did you get the roller cam?from Ive been seeing here,Its hard to do because of all the machine work.Did you bore the block?

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Mon Feb 08, 2010 1:26 pm
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Post Re: best 300 transmission
32sedan wrote:
I was wondering what transmission would be the best to put behind my 300 considering i am also looking at puting a gear vender behind it. I had my engine dynoed yesterday and it is close to 750 ft/lbs but at only 550 hp. actual ft/lb was 726 but as i said thats close to 750. I'll tell you my engine does have forged 300 flat tops i got from venolia pistons and i'm running a Aerocharger at 10 psi and running it through a powerjection 3 efi carb . engine was complete balanced before i built it and at the dyno it seems to me excetionally well balanced. once again i'm tahanking you in advance for your responses.


Aerocharger, excellent selection! I want one for my SHO.


Mon Feb 08, 2010 3:52 pm
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Post Re: best 300 transmission
I'm curious how much truth there is to this, but someone was saying that the under/overdrive units will only work in the F-series trucks, and not a Bronco. Since the Bronco's so short, the unit pushed the start of the driveshaft back even further, causing it to be too short and too sharp of an angle down to the differential. Thoughts?

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1981 Ford Bronco 300. 3.00 final drive, 4 speed OD manual. 4bbl Holley 390 w/Offenhauser DP Intake. EFI manifolds and 2.5" exhaust.

Sixes owned:
1957 Chevrolet 150 Sedan 235ci I6
1987 Toyota Supra Turbo 183ci I6 (3.0L)
1981 Ford Bronco 300ci I6
1984 Ford Bronco 300ci I6

Never owned a V!


Mon Feb 08, 2010 6:30 pm
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Post Re: best 300 transmission
i had the cam custom ground by isky it was $650, no i did not bore it over just honed it and put 10 over rings in it wanted to leave to meat in the block that way if later down the road i have to rebuild it i could.


Thu Feb 11, 2010 8:16 pm
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Post Re: best 300 transmission
AbandonedBronco wrote:
I'm curious how much truth there is to this, but someone was saying that the under/overdrive units will only work in the F-series trucks, and not a Bronco. Since the Bronco's so short, the unit pushed the start of the driveshaft back even further, causing it to be too short and too sharp of an angle down to the differential. Thoughts?


Yes I think the gear vendors unit is a bit long for what it does.
but wherater or not it fits wouldn't it depend on what trans you are running?
If you have a T18 and a shorter trans/Tcase adaptor I'd think you might be able to squeze one on a bronc.
Have these people ever seen a Auto trans CJ-7 drive line? or any CJ-5 driveline?

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80 bronco FUV (farm utility vehicle)300 T-18 3.50s EFI head, offy C dual plenum, 500 edel carb, 1.7 roller rockers, Crane 260 cam EFI Exh


Fri Feb 12, 2010 1:23 pm
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Post Re: best 300 transmission
someone local has suggested a manual tranny instead of an automatic is there one that can handle that much torque.


Tue Feb 16, 2010 7:55 pm
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Post Re: best 300 transmission
http://www.g-forcetransmissions.com/tran_gt-56.asp

But it's a tad expensive. I have one of their T5 conversions in my 5.0 Mustang. Big teeth, low helix angles, a tad noisy but bulletproof at my power level.

The Tremec TKO CR box is rated at 600 ft-lbs continuous. I don't know what that means in peak numbers though
http://www.ttcautomotive.com/English/products/TKO.asp

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Tue Feb 16, 2010 8:40 pm
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Post Re: best 300 transmission
n/a

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It doesn't run quick at the track, but it gets long stares wherever it goes.
Never in a million years did I think I would have an antique hot rod truck, much less with its own name emblazoned on the front fender and a freakin' six cylinder for power;
but it is a Ford, it is old, and it is definitely one of the funnest vehicles I have driven.


Wed Feb 17, 2010 2:07 pm
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Post Re: best 300 transmission
i've been told i might coul us a ZF S547 or posibly the T18/T19 with a gear vendors unit to handle my engine is there anyone whom might could tell me if this is true or not.


Wed Mar 03, 2010 4:24 pm
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Post Re: best 300 transmission
i take it no one used this as far as a Zf s547 manual transmission


Tue Mar 16, 2010 8:27 pm
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Post Re: best 300 transmission
It's rated for 470 ft-lbs continuous, don't know about peak but it's a very wide ratio box to try to use in a car

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Tue Mar 16, 2010 8:37 pm
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Post Re: best 300 transmission
How about buying a 6 speed manual from a newer F250/F350 and then buying an adaptor to mount the transmission to your 300?

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Tue Mar 16, 2010 9:31 pm
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Post Re: best 300 transmission
It's huge and unbelievably heavy plus it requires an external oil cooler just like an automatic. AFAIK no one makes an adaptor. The ratios are not right for a car either.

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1996 F-150 (tow missile)
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1982 Tiga Formula Ford (SCCA racecar)
2013 Hyundai Elantra Coupe (daily driver)


Tue Mar 16, 2010 11:09 pm
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Post Re: best 300 transmission
it's not going in a car it's going in a 41 ford pickup that already had a manual in it


Wed Mar 17, 2010 2:24 pm
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Post Re: best 300 transmission
i was also trold by a guy at ford that the Zf s547 would hadle 780 ft pounds because it was also made to work on the desiel trucks which if built right can easily get that number


Wed Mar 17, 2010 2:26 pm
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Post Re: best 300 transmission
The code for ZF trannies is
S542 = 5 forward speeds, 420 ft-lbs of torque continuous
S547 = 5 forward speeds, 470 ft-lbs of torque continuous
S650 = 6 forward speeds, 500 ft-lbs of torque continuous

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1996 F-150 (tow missile)
1993 Mustang 5.0 (hot rod and auto-x monster)
1982 Tiga Formula Ford (SCCA racecar)
2013 Hyundai Elantra Coupe (daily driver)


Wed Mar 17, 2010 2:45 pm
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