Are the summit carbs any good?? It has an electric choke so I'm not shure about that on our trucks. The price is right $280.

I have a stock 360. I'm just starting my build. I only had the truck 2 weeks. I'm looking to make ok power for a good price.

 

i pulled the Manuel choke and put a electric choke on my 360 worked great after i got it set up correctly. on the summit carb wish i could help you there. i just have never used one before.

 

Not a good idea, waaaaay to much carb for a 360. About 500 cfm is all it can handle, 600 if you build it out as a 390. A 750 will run but you will be dumping gas on the road through the tail pipe.





John

 

Hmm. Good to know. I plan to swap to a moderatly built 460 in a year or so. So I am trying to only spend $ on parts I can swap over. I can work with a 600 on both I sapose.

 

I have a summit 600 on the 390 in my '73. I'm very happy with it. It kinda looks like the love child of an autolight 4100 and a holley 4160

 

I put the 600cfm Edelbrock on my 390....LOVE IT!

 

I run the Holley 600 cfm on my 302's and 351w's no issues.Easy to set up.

 

Summits are good but I'd get a 600 or smaller. For the 460 also. Those truck engines would almost never benefit from anything bigger. I had a 750 holly on my wifes buick 455 but it was a factory high compression 93 octane minimum engine. Big difference from a truck engine.
For pulling power and low end torque go smaller. Not bigger. It will just waste gas.

The best one I ever had on my boss 302 was a 600 cfm spreadbore holly. Not sure if you can even get those anymore. I had webers, edelbrocks, carters, even one of those predator pieces of junk on it. The SB holly was the winner. That car would tear the tires off like nobodies business when I switched to it.

The 390 f350 I had was a 600 holly and while it would do some amazing wheelstands while pulling stumps out, it was really wasting fuel. The other poster was serious about it running gas out the tail pipe. Mine did quite literally. I couldn't find a 4 barrel any smaller though and I hate motorcraft carbs.

 

Wow. I'm saprized how small a cfm these motors run on considering how bad the mpg is. I'm planning a total performance build when I drop in a 460. 400hp is where I want to be, I did some reasearch and can upgrade a holley 600 easy enough. And it should make more power than a 750 anyway. Can you jet a carb so it doesn't waist as much fuel???