Stock 340 forged crank/A727 converter - Who sells a good one?
- Thread starter GSS
- Start date
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VOETOM
Well-Known Member
Send it to the guys at Precision of New Hampton. I've had them do a stock 340 and a 440 six battle one for a Superbird and they came back as you would hope. Stock.
On cranks, just read what the material is made of.
The MP cranks were often 5130 I think it is which is fine for most applications. The very hi performance ones are 4340. Oddly, at least in my head, my 3.545 MP crank designed to make a 352 w/a 4.03 bore size is a 5130.
(If those are the correct numbers for the forging.)
I have had several fellas tell me they have run in the low 9’s with that displacement and crank.
On a transmission, I don’t think I can help. B&M and TCI have a basic rebuilt units. That’s a choice if a local shop is not available for this service. Though VOETOM (above) has a book out of how to rebuild a 727.
(I should have had him sign it.)
The MP cranks were often 5130 I think it is which is fine for most applications. The very hi performance ones are 4340. Oddly, at least in my head, my 3.545 MP crank designed to make a 352 w/a 4.03 bore size is a 5130.
(If those are the correct numbers for the forging.)
I have had several fellas tell me they have run in the low 9’s with that displacement and crank.
On a transmission, I don’t think I can help. B&M and TCI have a basic rebuilt units. That’s a choice if a local shop is not available for this service. Though VOETOM (above) has a book out of how to rebuild a 727.
(I should have had him sign it.)
Not in any particular order. Dynamic, Ultimate converter concepts. PTC. And a few others I can’t think of. If u get them to build a modern converter it will drive like factory stock and perform like gangbusters when u hit the pedal to the metal. Kim
A&A stocks Transmission specialties converters for these applications with a variety of stall speeds to choose from. A customer of mine I recently built a transmission for bought a converter from A&A for his small block Dart and he is very pleased with the converter. He said the converter brought it to life compared to the other one he had. Just an option.
The modern converter is 1 of the single most performance oriented items u can do for your car. Better than a cam swap or a gear change. U won’t believe the transformation it will make. Kim
Couldn’t agree more Kim
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