belt size for underdrive crank pulley?
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Supreme Member
iTrader: (2)
Joined: May 2009
Posts: 3,371
Likes: 2
From: Delaware
Car: 91' Firebird SOLD
Engine: 350 TPI +bolt-ons
Transmission: 700r4
Axle/Gears: 3:42
belt size for underdrive crank pulley?
I have a 91 350 TPI. I have this underdrive crank pulley that i want to install. Now, my stock belt is 94.5 inches. Just for reference i measured the stock crank pulley diameter, it is 7 5/8 inches. The underdrive crank is 5 7/8 inches. Yeah, that probably wont tell me much. What i am trying to find out is if anyone out there has knowledge of what belt size i need use to use for that underdrive pulley. I am running all stock accesories.
Supreme Member
Joined: Jan 2004
Posts: 2,322
Likes: 100
From: So. Ohio
Car: 88 Camaro
Engine: L98 350
Transmission: 700r4
Re: belt size for underdrive crank pulley?
Have the March underdrive crank and water pump pulleys on my 89. Water pump pulley looks to be the same size as the original pulley. Use a 910k6 belt, 6pk2310 from Autozone if the 91 is the same as my 89.
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