Quadrajet Problem Solving > Dialing in your rebuilt Quadrajet carburetor
Quick question I'm probably overthinking
Ksp3cialK:
So my first post here a few years ago before life happened, https://cliffshighperformance.com/simplemachinesforum/index.php/topic,3146.0.html
I'm back to working on this truck, got the trans working properly now and recurved the distributor. Now the truck is much more alive than before.
My carb #17080213 is still set to stock with the 72/50M combo. I also figured out it's an 800CFM that was originally on a 454CI truck.
With the primaries larger on this carb, will that affect part throttle at all on this stock 350?
Currently while cruising if I floor it, it goes pretty lean on the WB then gets pretty rich and takes off on the downshift. I'm guessing maybe a pump shot issue but I have trimmed the shaft some and moved the rod to the inner hole.
I'm probably overthinking this. I might start with a fresh rebuild with parts from this store. When I take it apart, should I mess with air bleeds or idle tubes since it was for a big block originally?
tayto:
cliff already answered you're question in your original post. reman'd qjets are garbage. find a virgin core and order a rebuild kit. i'm pretty sure after the mid 70s all Qjets were of the 800 cfm variety.
Frank400:
the 800 cfm (large primary venturi) will NOT affect anything in your case. Even lazy Pontiac 301s had a 800 cfm Quadrajet.
Ksp3cialK:
--- Quote from: Frank400 on March 17, 2020, 07:36:47 PM ---the 800 cfm (large primary venturi) will NOT affect anything in your case. Even lazy Pontiac 301s had a 800 cfm Quadrajet.
--- End quote ---
That's good to know. Thank you for your reply.
Ksp3cialK:
--- Quote from: tayto on March 17, 2020, 06:56:23 PM ---cliff already answered you're question in your original post. reman'd qjets are garbage. find a virgin core and order a rebuild kit. i'm pretty sure after the mid 70s all Qjets were of the 800 cfm variety.
--- End quote ---
Suggestions on the best way to find those and know 100% that it's unmolested? Only one salvage yard around me and they don't keep much of the older stuff around and the stuff they do have is not cheap. No way to trust anything online like ebay.
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