Weather warmed up and snow is melting. So I got my old worn 17080513 pulled off my '81 350 sm blk, K20 chevy truck. Spent several days cleaning up the intake manifold and then masked it off an fresh painted it chevy 1620 orange.
This morning unmasked every thing and reassembled that I took off, and got the new replacement, rebuilt with Cliffs parts, 17080213 carb installed on the chevy 350 and running. Checked for leaking fuel at the filter fittings, none. Adjusted the new electric choke conversion as it got warmed up, fiddled with the idle mixture screws alittle and then back to two turns out. Slowed the idle down.
Warmed up, choke off, I throttled up to 2000 and slowly closed the choke flap, no increase in RPM... ok for now, it seems. Had a wet towel and fire extinguisher handy
didnt need it so far
Took the truck for little spin down the hill and back to my house ran pretty good . Maybe a tiny hesitation at after first taking off(mid throttle). Accelerator pump and response from dead stop was crisp.
Eating lunch.... Ill pull it back in the shop check 4 bolts and air horn screw tightness from first warm up and cool down.
I put in new #72 jets and Cliffs Custom 50m rods.
APT I set at 3 1/2 turns up for starters. I used the Orange power piston spring recommended by Cliff
The new Idle mixture screws I installed at 2 turns out, to start with.
Tomorrow I play with it more trying to tune the APT etc.
The distributor timing
was set at a safe, 8 degrees advance at idle, with vacuum advance plugged with the other carb.
Any tips on getting the carb dialed in?
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