The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - 1970 C20- 350 Carb Rebuild

68gmsee · 10-07-2016, 09:22 AM

Depending on which carb you have (a pic helps) there's a lot of good info on the net and a lot of members here are very knowledgeable and have rebuilt carbs before. Do a lot of reading and view youtube videos before tearing into it.

First thing is to look up the type of carb you have. If it hasn't be changed, most of these trucks came with the Quadrajet. There should be a number stamped on the carb that will show the model. It's usually covered with grime so you may have to do some wiping.

Another thing you may have to fix is the leaking "well plugs" problem on the qjets if they haven't been repaired before. They cause hard starting and flooding.

If it's a qjet model number should be where pic shows:

10-07-2016, 09:22 AM	#4
68gmsee Active Member Join Date: Jul 2007 Location: Centrally located between Houston, Austin and Waco. BCS area. Posts: 7,947	Re: 1970 C20- 350 Carb Rebuild Depending on which carb you have (a pic helps) there's a lot of good info on the net and a lot of members here are very knowledgeable and have rebuilt carbs before. Do a lot of reading and view youtube videos before tearing into it. First thing is to look up the type of carb you have. If it hasn't be changed, most of these trucks came with the Quadrajet. There should be a number stamped on the carb that will show the model. It's usually covered with grime so you may have to do some wiping. Another thing you may have to fix is the leaking "well plugs" problem on the qjets if they haven't been repaired before. They cause hard starting and flooding. If it's a qjet model number should be where pic shows: Attached Images __________________ 68 GMC 250/3 speed Saginaw p/b p/s 69 Chevy 350/350 currently in pieces still lookin for a cab 06 Trailblazer I just want a vehicle that I can work on, that won't talk to me, leave error msgs or keep track of how I drive...