TBI manifold hole I.D.

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

Padams8888

Newbie
Joined
Aug 14, 2021
Messages
7
Reaction score
10
Location
Oak Harbor, Wa.
Hi all. Doing some long overdue maintenance on my 95 k2500. Must have missed taking pictures of this area before I tore it down, but can anyone help me identify the bolt holes in the manifold I have circled? Thanks in advance.
 

Attachments

  • 20220904_180044.jpg
    20220904_180044.jpg
    367.3 KB · Views: 20

L31MaxExpress

I'm Awesome
Joined
Apr 21, 2018
Messages
6,245
Reaction score
8,316
Location
DFW, TX
Hi all. Doing some long overdue maintenance on my 95 k2500. Must have missed taking pictures of this area before I tore it down, but can anyone help me identify the bolt holes in the manifold I have circled? Thanks in advance.
My 1992 G20 van accessory setup I used on my 1983 used the driverside hole is for a compressor brace on its DA6 compressor. The front hole held the transmission dipstick tube.
 
Last edited:

Drunkcanuk

I'm Awesome
Joined
Jul 22, 2021
Messages
1,959
Reaction score
5,493
Location
Alberta, Canada
On my 91, the hole by the t-stat is for the bracket that holds the front drive tensioner, and the one on the driver's side is just empty.
 

PlayingWithTBI

2022 Truck of the Year
Supporting Member
Joined
Jan 3, 2019
Messages
9,776
Reaction score
15,316
Location
Tonopah, AZ
On my 91, the hole by the t-stat is for the bracket that holds the front drive tensioner, and the one on the driver's side is just empty.
Same on my 88 for the tensioner but, the driver's side one is for the alternator top bolt hole. There's also a brace bar from the exhaust manifold that goes to the same bolt in the alternator.
 

Schurkey

Supporting Member
Supporting Member
Joined
Jan 14, 2018
Messages
11,411
Reaction score
14,477
Location
The Seasonally Frozen Wastelands
On my '88 K1500, the front hole is not used. The strut rod from the belt tensioner goes to a thermostat stud. I've seen manifolds where the front hole is not even drilled/tapped. The hole on the driver's side by the throttle body holds a strut rod from the alternator.
 

PlayingWithTBI

2022 Truck of the Year
Supporting Member
Joined
Jan 3, 2019
Messages
9,776
Reaction score
15,316
Location
Tonopah, AZ
On my '88 K1500, the front hole is not used. The strut rod from the belt tensioner goes to a thermostat stud.
Come to think about it, you're right. Mine's the same way.

You must be registered for see images attach
 
Top