Summit Carb Review - First Drive

Great carb. No issues and ran much smoother and more consistent than the Edelbrock 1406. Beyond initial idle adjustment, no further adjustments required. Highly recommend over the Edelbrock.

[@f150bft]

It was designed after the Autolite 4100 that Ford used for years. I just got one myself.

[@billygladden3480]

I have been running one on a 331 450 horse small block in a 64 Fairlane best Street carburetor on the market I've been running it 8 years . Primary and secondary Jets the same size as 650 Holley 67 primary 73 secondary

[@MattsRageFitGarage]

I've had one of these carbs for almost 10 years. Been a great carb. Daily driven most of the time with zero reliability issues. I've run it on a few different engines over the years. I also bought this to replace an Edelbroke 1406 that never ran quite right, it had manufacturing defects.

[@ciscohour5884]

Had mine for 8 years now. Needed some adjusting after a bit of ownership. Flat spot off idle keeps coming back.

[@julianchavez3372]

I put the summit 600 on my 1977 Dodge tradesman200 van. I rebuilt the engine from the bottom up. Its running a comp cam xe250h which is "mild". Weiand stelth intake and hedman headers. The carb really has been working well and has great throttle response.

[@MattsRageFitGarage]

What do you get for MPG out of that van with that cam and carb? we had a 78 B200 sportsman that had an old school direct connection 260H cam, edelbrock performer intake, Holley 4360 ecomomaster 450 cfm carb and it had a 2.5" dual to 3" single exhaust and always averaged 14-15 mpg out of it. Thing ran great. I run the XE250H in a 351W with the summit 600 carb and it averages 10 MPG, well it gets that with any carb I've had on it.

[@julianchavez3372]

@@MattsRageFitGarage I'd have to say about 10 as well. But I calculate smiles per gallon, and in that value I'm in the 20 to 30 range.

[@MattsRageFitGarage]

@@julianchavez3372 What engine is in your van? ours had a 318. The old direct connection 260h was like a 194 @.050 cam with .410" lift on a 114 LSA. It was pretty nice for what it was and took us on many road vacation trips and daily driving for 35 years. I do think the 110 LSA of the comp cams XE line is harder on gas than a wider LSA, I've experienced this on a few different engines now.

[@julianchavez3372]

@@MattsRageFitGarage It is the LA 360. I reused the stock rotating assy including pistons. Just rerung it with new bearings. It will do 100 miles an hour smooth.

[@MattsRageFitGarage]

@@julianchavez3372 Shit ours was all over the road past 55 mph and it had a full front end rebuild at 80k miles and two steering boxes so I'd say yours does petty good!