foo

Ok, im clueless what to look for in these areas for parts for my application. I am looking for some recommendations for carb. and distributor as the title indicates and maybe some general info too.

Going to use on the street and may see the track from time to time, mostly street though, run premium gas


Intake - Edel. 2151
Cam - Erson TQ50
Heads - Stock E
Pistons - IC886KTD
Block bore - .030
Crank - Stock
Trans. - unknown manual. m22?
Rearend - 3.73

billmerbach

Well you want a carb that your engine will use all if not most of the cfms there's an equation I can't remember but it also depends on build and most people use hei I like mallory and msd but they exxxxxpendive but again depends on build

foo

I forgot to mention im not looking to break the bank either

billmerbach

That's what I figured lol well with the distributor more than likely hei will do u good and I'm not a carb person but I think match it with the intake

coppercutlass

A 750 holley should be fine.

oldcutlass

You can use a Rochester, or a square bore carb in the 750 cfm range. I don't know if you prefer a mechanical secondary or a vacuum. It also depends on how your going to drive it. For the distributor an Hei will probably work fine.

foo

Any pros or cons regarding mechanical vs vacuum?

coppercutlass

Mechanical double pumpers shoot a lot of initial fuel since you have dual accelerator pumps. The vac. Secondaries work off vac. So it goes by what the engine demands.

cutlassefi

I'd do either a Holley Street Avenger 770 or QF 780.

oldcutlass

Since you have a manual transmission you might want to look into a mechanical secondary carbs if your looking for performance.

cutlassefi

X2. If you go with the manual, I'd do a QF 850 Double pump.

foo

sounds good, Im in my research phase atm since its so cold out. I appreciate the replies

455man

The problem with a vacuum secondary is when you let off the gas and shift gears at WOT the vacuum comes back and can close the secondaries. With the mechanical you dont have that problem.

jag1886

Look on Ebay for the 750 Holley there are tons of used ones and Holley are pretty easy to rebuild. You can buy new HEI's for pretty cheap from Summit. With a 4 speed and a nice gear like you have I'd use a double pumper as long as gas milage is secondary to performance.

jag1886

Not to be a smart *** but you must shift gears awfully slow.

brown7373

Did you happen to mention what year car and engine you have and what you are starting with, or did I just miss it? Does it presently have an intake, carb and distributor? Most people on this site and the Pontiac site, for that matter will recommend a Quadrajet and a stock manifold, especially if it is mainly for the street. If you already have those items, it takes a lot less money to make them work.

foo

first post. The year of the car is a 70 442, block is a 73, 455 carb and distributor were not with it