my 1988 GMC 7000 dump truck story - The 1947 - Present Chevrolet & GMC Truck Message Board Network

sweetk30 · 03-04-2017, 09:42 PM

cleaned up the engine bay harness today of extra unwanted wires / parts .

stream lined it to coolant/oil psi sensors . tach/12volt to hei . carb 12volt kickup power.

got few question tho on the carb parts . 1988 7000 366 gas 5 speed .

pic 1 = is this the 12volt high idle or what is the correct name ? ? ?

pic 2 = vac port item pushes to the linkage but dosnt touch anything . what does it do ?

pic 3 = seems to restrict vac to secondary diaphragm . 12volt opens flow . can I bypass it or just leave it alone ?

pic 4 = looks like a tiny vent filter unit thingy . . whats its name and function ?

pic 5 = the whole carb for refrence.

03-04-2017, 09:42 PM	#28
sweetk30 Registered User Join Date: May 2012 Location: horseheads,ny rust belt Posts: 2,794	Re: so i went and looked at this today cleaned up the engine bay harness today of extra unwanted wires / parts . stream lined it to coolant/oil psi sensors . tach/12volt to hei . carb 12volt kickup power. got few question tho on the carb parts . 1988 7000 366 gas 5 speed . pic 1 = is this the 12volt high idle or what is the correct name ? ? ? pic 2 = vac port item pushes to the linkage but dosnt touch anything . what does it do ? pic 3 = seems to restrict vac to secondary diaphragm . 12volt opens flow . can I bypass it or just leave it alone ? pic 4 = looks like a tiny vent filter unit thingy . . whats its name and function ? pic 5 = the whole carb for refrence. Attached Images __________________ 77-k30lb BIG truck build . 87-k30lb budget beater build . 85-k30lb the plow machine build . 85-c10sb summer fun toy . ----------------------------- HOLLEY SNIPER efi = worst case of p.i.t.a i ever had . EDELBROCK pro flo 4 = best deal going so far . love my setup works great.



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