tri power questions

I been thinking about a multi carb setup for the engine im going to put in my 31 chevy i just bought. ive got a few motors put back in my rat hole. nailhead, small block chevy's, and a few old caddy motors. and i was just wondering what is the best carbs to use for tri power setups. i ran across a offenhauser intake for a small block with a set of rochester 2 jets for a fair price. but i dont know if this is the best thing to buy. any info on this subject that you guys could give me would be great.

 

lots of tri power tech in the archives,
"best" carbs are in the eye of the beholder, what are your criteria?

 

well i think that if i do use the small block that it will probaly be around 350 hp. gotta have enough power to smoke those 19 inch wires at will. cam will be around 550 inch lift. but i want it to be a driver, and dependable.

 

I live at altitude (6000 ft) so I may be a little off, but a 550 lift cam in a small block does not constitute "reliable daily driver"

that aside, I say Rochesters, because of carb/parts/kit availability. they're cheaper than 94's or 97's as well.

 

Matt,

Can't really provide much info about the carbs, but sure am interested to know more about your 31 Chevy. What is it? Truck, Sedan, Coupe, Roadster? I'm working on a 31 Chevy 2-dr sedan. Sorry for the crappy pics.

 

I agree with moparsled. Use rochesters because of parts availability and price. Use the small base rochesters...they can be massaged to run just fine with a 350 h.p. engine. My s.b.c. is around 400 h.p. and they do a good job for me. A couple of people on the hamb carry parts and complete setups for a reasonable cost.

 

Unless your stuck on the Stromberg era look, go with the Rochester 2G 4-bolt mount carburetors. They stay tuned, don't leak, and provide great power and mileage. Not to mention parts are available.

Glenn

 

thanks for the info, i guess i should go and buy the darn thing not a bad deal. intake 3 carbs with linkage and breathers for 4 bills. as far as the chevy it's a 2 door sedan.i found it a week ago behind a shop and just had to have it.i think the carbs are a 4 bolt base but im not for shure. but i would like the info on the parts deal. saw an ad in speedway for a base kit it was about 400 but i would like to just buy the rebuild kits.

 

Four bills is a good price. if you want to save ypurself a lot of headaches I would go with the base kit from Speedway. Maybe buy the 3-deuce set-up and put it on a running s.b.c before you buy the kit and see how it runs, If it runs good and the end carbs seal good (no vacuum leaks) then you are good to go. if there are vacuum leaks then the carbs will never perform to your satisfaction. Ask the seller when he last had them on a running car. You will probably have to play with the jetting to get them right for your engine. Use the same size jets for the end carbs. My set-up gets 16 m.p.h on the road if I keep my foot out of the end carbs. Not bad for a 400 h.p. chevy. Let us know how you come out.

 

Allot of the "afordable" tri power set ups Ive seen were an abortion of missmatched carbs and most of the end carbs were the wrong ones. I'ts not hard to get into these so deep that you wished you had started with a new manifold and a Speedway base kit.
Panhead Guy