Metric 200 - What do I need to make one last

[ss3011]

If you get the rebuild through Scott McClay , he has an option to get you a 350/400 turbine shaft , and revised pump . That way you can use your current converter .

[Bob Don]

Get a J.W. Performance Ultra Bell. I cracked two cases before getting one. The case is the weak link on a TH200

https://racewithjw.com/product/ultra...-metric-to-gm/

[Mark Yacavone]

If you don't go with the 350/400 changeover option, you still want to get a hardened stator support shaft insert.

[B Parker]

Real simple Sepanek Racing Transmissions. I have 75 runs on his metric in a Big Block Chevy stocker. It's a 1970 402/375 hp making 635 hp. It's the fastest trany I've had in my car and it has lasted. BP

[Lee Valentine]

Sepanek all the way,best and fastest out there

[KennyAnderson]

Thanks guys and keep em coming! I've been told the Metric 200 is about a tenth faster than a TH350. Hoping this is true??? I would hate to leave that on the table but I'm wrestling with the durability of the 350.

[GUMP]

A good one will be fine behind an LT1. It will also be a little faster.

[Alan Nyhus]

Billy Lynn does also a great Metric 200. If you've got a TH350/400 convertor, you can have a input for those installed along with the appropriate pump mods. The governor driven auto 1-2 makes them very consistent. The JW bell housings are a worthwhile addition or you can fabricate a brace for the stock case. Also, the Lokar flexible dipstick makes life a lot easier. The marks on the Lokar unit aren't correct so you need to remark it relative to the oil pan flange on the case. Retapping the oil pan holes to 1/4X20 from the metric size is another thing to do to simplify things. If you elect to have a roller rear bearing installed in place of the bronze one, the drive shaft yoke will likely need to be turned down about .020 for proper fit.

For what it's worth. -Al

Billy Lynn (501) 278-0651

[Joe Schweigert]

Originally Posted by KennyAnderson

Thanks guys and keep em coming! I've been told the Metric 200 is about a tenth faster than a TH350. Hoping this is true??? I would hate to leave that on the table but I'm wrestling with the durability of the 350.

it's not, unless its a stocker or a generic 350 you get some weight savings a nickel on a Super Stock at least a dime on a Stocker But .005 is a lot we spend a lot of time and money looking for a tenth