I've had an on going issue with my truck when it sits for a few days it won't start unless I prime the carb. Also once Theits warm and sits for 45 mins or so, it will start and immediately die. Then it has to turn over 8 time-ish before it will start. The carb is a stock 4 barrel Rochester. I put JB weld on the plugs that normally leak many years ago. I'm assuming they could be leaking again(?), but I think I want to look into alternative carbs without this issue.

It is a 350 engine bored 0.010 over with an RV cam (whatever that is) and the metal line between the carb/fuel pump has been replaced with rubber fuel line with inline metal can filter.

Fuel​​​Fuel economy is important so in addition to new carb I'm thinking about replacing the turbo 400 with a 700R4.

Any comments/suggestions are much appreciated!
Thanks,
Pat

 

I would replace it with another Quadrajet, don't think anything is going to give you better mileage. If you want to get away from the Rochester, maybe look at a spread bore holley.

 

https://www.carbjunkys.com/
I had this site bookmarked for my 68 El Camino Rochester. I have not used them yet, and forget where I got their name, but maybe they could rebuild yours. Always nice to have the one you started with IMO.

 

Thanks for the link, but after checking out reviews on-line they seem to have a lot of PO customers that not only claim bad workmanship, but difficult/rude people to deal with. They are located in GA so that's too far away for me to risk doing business with, but I appreciate the link. I'll start googling other carb rebuilders and see what happens...

 

Thanks, maybe it would be best to look into getting mine rebuilt. Now to find a good place...

 

Glad you checked Poodle. Don't know where I heard of them but reviews are always important to consider. A personal reference is golden. Maybe someone here can steer both of us to a good carb shop. Keep us posted on your progress!

 

Welcome/Home - Carburetor USA

I used them to locate a kit for an oddball carb several years ago. Recommended them to a friend at work when he needed the carb on his Toyota pickup rebuilt - I can’t recall what they charged him but the work was guaranteed for life. He got it back after a couple weeks and said all he had to do was bolt it back on and the truck ran great.

I haven’t needed to use their services since but I do remember them as being very professional, courteous, and kept me up to date when there was something to report.

 

I just checked out their website and everything looks perfect! I also looked for reviews on them and couldn't find any for their company, which to me isn't a bad thing.. They ONLY rebuild your carb, no swaps, so I will be giving them a call tomorrow. $229 for a 6 mo warranty, $329 for lifetime. I'm an old fart, but will still spend the extra $100 so Murphy's Law doesn't happen... Will update you later.... Thank you!