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Different throttle bodies for different years?

trrgod

Well-known member
Joined
Feb 24, 2001
Messages
92
Location
Santa Monica CA
Corvette
1989 Black Coupe 6 sp
Anyone know what is different about the throttle bodies? I always see that the years are listed as follows: 85 to 88
89 to 91
92 to 93
I'm looking to buy a used BBK and want to make sure it fits my 89 Vette.
 

bossvette

Gone but not forgotten
Joined
May 19, 2003
Messages
3,233
Location
West Unity Ohio
Corvette
1968 1997
trrgod said:
Anyone know what is different about the throttle bodies? I always see that the years are listed as follows: 85 to 88
89 to 91
92 to 93
I'm looking to buy a used BBK and want to make sure it fits my 89 Vette.
there are differences in the way the throttle cables mount and the Idle mixture delivery between the 85-88 and the 89-91.
the 92-93 is for an LT-1
 

Ken

Gone but not forgotten
Joined
Jan 30, 2001
Messages
8,236
Location
Hermosa Beach, CA
Corvette
1987 Z51 Silver Coupe
Tom, if I remember correctly, they changed from MAF to Speed Density for the '89-'91 model years, then reverted back to MAF in '92. That probably has something to do with why they list them for the different model years.

I don't know what the change was to the throttle body when they went to the LT-1. ;shrug
 

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