52mm throttle body???
02-23-2005 | 09:52 AM
#1
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Joined: Feb 2005
Posts: 12
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Car: 71 z28
Engine: 383 EFI
Transmission: Tremec
52mm throttle body???
I have a throttle body that has a arizona speed & marine top plate, it states 52mm. The bores measure 2". The throttle body says Rochester on it. It has an air foil attached. Is this just a stock t/b? 2" seems close to 52mm. Isn't stock 48mm?
02-23-2005 | 10:01 AM
#2
Supreme Member
Joined: Jul 1999
Posts: 2,149
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From: Mims, Florida
Car: '87 IROCZ
Engine: 395 ZZ4
Transmission: ProBuilt 700R4
Axle/Gears: 9 bolt 3.70s
First of all, you got to be able to measure the bores alot better than 2". What is the bore to the closest mm? 2" is actually 50.8mm.
Second: AS&M probably purchases stock TBs (48mm bores) and then machines them out to 52mm and replaces the top plate. This is why the TB will have Rochester on the TB itself.
It is my guess that you have an AS&M 52mm TB.
Second: AS&M probably purchases stock TBs (48mm bores) and then machines them out to 52mm and replaces the top plate. This is why the TB will have Rochester on the TB itself.
It is my guess that you have an AS&M 52mm TB.
02-23-2005 | 07:58 PM
#3
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Joined: Jul 2004
Posts: 2,387
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Maybe this thread can answer your questions for you...
https://www.thirdgen.org/techbb2/sho...hreadid=277932
https://www.thirdgen.org/techbb2/sho...hreadid=277932
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