GTP51
Full Access Member
- Joined
- Sep 6, 2017
- Posts
- 112
- Reaction score
- 124
- Location
- Melbourne Australia
- First Name
- Geoff
- Truck Year
- 1987
- Truck Model
- R10 Silverado half ton Stepside
- Engine Size
- 355
Having been down this rabbit hole before and pretty much followed the pattern you did, I ended up finding the throttle shaft bushings were worn and allowing air to bypass, and it did not show up when chasing Vac leaks, I replaced the TBI unit with one of the modified ones that you see on Ebay worked a treat and even picked up a few HP.
Have since gone to a Holley Sniper set up and have the TBI unit sitting in a box on the shelf.
Have since gone to a Holley Sniper set up and have the TBI unit sitting in a box on the shelf.
