well i ran the casting #off the intake manifold that the previous owner had installed on this 318 and it is from a 1978 360. and i suspect the therma-quad carb that is on there came with it. why would some one use such a miss matched combo as this? and wont that cause problems?

easy way to gain some power off the stock 2 barrel...port sizes may not match up, but probably worked okay for whoever did it

well i do have a period correct edelbrock intake manifold and a edelbrock performer 600 cmf carb for it. i noticed that a vacuum line that goes from the carb <tq> that is currently on the motor and it goes to a canister with 2 more lines comming off of it? what is the canister for? and do i need it? is it part of the emissions/smog gear? thanks

All 4 bbl LA based 318 4 bbl engines had 360 intake and 360 heads. It was all oem from Mopar, David.

but this wasnt a 318 that came stock with a 4bbl carb, it was a 2 bbl 318 according to the vin and tags i could find

Someone either bolted that intake on there or switched motors on you. If they did swap that intake on, yeah there's a port mismatch, but a stock 2bbl 318 is still going to be a slow pig even if you stick a 4bbl on it so I wouldn't worry about it.

The cannister you are referring to is the charcoal cannister. You don't need it but it doesn't hurt anything either. It feeds the engine gasoline vapors during cruise and part-throttle. I removed mine because I swapped on a carb that didn't have a port for it. Just be sure to cap off the line going back to the fuel tank from the cannister.

swaped a many 360 intakes and carbs right on to a small port 318 head,"poormans upgrade"

mix matched port size is not gonna be noticed for a street cruzer

it is a slight gain in performance,contrary to what most will tell ya

even swapping the 360 heads on to a stock 318 is a gain in performance,
even though it will lower the comp some,it will make up for it in flow on the top end,
early 80s mopar used it any way with a q-jet on all 4-v 318s

main prob with a 318 is the 2-v carb and the wimpy cam

hopfully the thermobog is from a sm block engine and not to big and all jetted wrong

a mid 80s mopar q-jet will fit also,and easy to tune compaired to a thermobog...but when they work they are a good carb

the 360 heads will have a big 360 cast in across the runners on one end of the head under a vc

and yes see what cast # it has

my bad..your right it was 85 or so for the first q-jets

I know the 85 are to be stayed away from,first yr probs and then feed back crap

I allways take a mopar throttle lever from one and tac weld it to a early chivy q-jet so it fits with mopar linkage

the early chivy ones are non emiss, a vac choke pull off and are easy to strip and modofry and have been close with the jetting when from a 67-74 327/350,only cost about 10$ for a rebuild kit

I do grab needles/jets from the dodge q-jet and swap over to the chivy one some times as well to help get it jetted right

works for me anyways

thanks, i do have a early 70s edelbrock intake manifold and a edelbrock performer 600 cmf carb to put on so if heads are stock that should clear things up.

Depending on what Edelbrock intake you have it might not make any difference over the 4 barrel one it already has.

What manifold do you have, edelbrock made a bunch of emissions and MPG manifolds in the 70's that are junk for performance, a single plane streetmaster 318 was one and another is a dual plane with runners smaller than a 318.

If one of them would happen to be the LD4B it would be great.

318 intake is different. They are hard to find. I sold a LD318 eddy intake a few years ago for $225. good luck finding one.

that'd be it. I couldn't belive the bidding kept going up and up....

http://cgi.ebay.com/ebaymotors/VINTAGE-E...sQ5fAccessories

here ya go

Much more manifold than the Performer (no comparison). It is the s,mall port version of the LD340 and works well on the larger port heads of the 340/360 too.