silverbackreef
Junior Member
- Joined
- Mar 18, 2023
- Posts
- 14
- Reaction score
- 22
- Location
- FL
- First Name
- Dude
- Truck Year
- 1986
- Truck Model
- C10
- Engine Size
- 305
PO has changed a bunch of stuff on my truck and I'm trying to make sure I have my head wrapped around how it was originally. I've found descriptions of everything on this sticker except: the H and J carb ports. Both route to the EGR/PURGE/TCC TVS and I'm unclear what those ports are. My guess is that one is a ported vacuum signal and the other is manifold but I can't be sure.
Oh yeah, I can't inspect the original carb because it's gone. Replaced with an emissions-capable Holley.
Here's my current decode of the carb ports if anyone's looking:
J - ?
H - ?
F - Full manifold, bleed for the EGR valve signal
B - Ported, Spark signal and used for several other systems as well
L - Full manifold, purge for canister and PCV
T - Bowl vent
Many Thanks,
-Mark
Oh yeah, I can't inspect the original carb because it's gone. Replaced with an emissions-capable Holley.
Here's my current decode of the carb ports if anyone's looking:
J - ?
H - ?
F - Full manifold, bleed for the EGR valve signal
B - Ported, Spark signal and used for several other systems as well
L - Full manifold, purge for canister and PCV
T - Bowl vent
Many Thanks,
-Mark
