I am looking at what manifold and carb to buy. I was wondering if anyone had any flow numbers for them. I was specifically looking at the edelbrock RPM performer and the weiland stealth. I also see AFR has them too.

Also I was looking at Jegs online catalog and their 600CFM Holley with vacuum advance and electronic choke has a kickdown for Ford. First what is a kickdown and also would I be able to use i oon my 305, or is there another one I should look at?

 

What are you trying to accomplish? I'd bet my GM intake with CC q-jet will hold up to any of the non-CC combos you could get. Better mileage, too.

 

Basically I am trying to get the biggest bang for my buck. The car is a semi-daily driver, it is not driven in snow, rarely driven in rain. I am trying to keep the cost as low as possible yet still gain good power. Gas miliage is irrelevent

 

Your best bang for the buck would be to work over the q-jet. With a rebuild kit, rods & hangers, and the tips given in the tech articles, you'll get as much or more power out of that carb than you would with any 600 CFM aftermarket carb, for less than $100.

Your money would be better spent with ignition upgrades such as coil & module. You've already done exhaust and air cleaner (although a dual snorkel is somewhat better than an open element in hot weather - or cold, for that matter). The q-jet is not holding you back.

 

I'm just a little hesitant about getting a q-jet, a friend of mine has an 85 camaro Z with a q-jet, or rather had a q-jet. He had nothing but problems with it, and his father has been building and modifying SBC's for most of his life and they eventally after a couple years of trying to get it working dumped it for a standard carb. Plus not having a q-jet in my possesion makes it probably more costly for that system. And since its also computer controlled, makes it fairly similar to the TBI on there already.

 

I got a little skewed there - had it in my head that you already had a carb.

Are you prepared to live without the functions the computer provides? TCC lock-up being one that comes immediately to mind.

I would think you'd be better off working with the TBI rather than going to a completely different system. You'll need carb, intake, and distributor, and if you buy new, you'll be spending pretty close to the same as what it would take to make that TBI sit up & talk.

Just putting a carb on isn't going to be a big boost in power, if any at all. The cam & heads you've got aren't anything to brag about, and making those changes would make the TBI run better.

Just trying to help you avoid expensive disappointment.

 

Have the same ZZ4 / CC Qjet as 57kid on a 350 hp 350ci new crate motor. Only have 380 miles on the new combo and have been trying to debug new combo
on a very limited time schedule. Runs real nice
but just keep wondering if this carb/intake combo
is optimum ?

 

Oh I know the heads and cam are holding me back. I was planning on swapping out the cam when putting on the carb. The heads well, I may just have to live with them. Eventually I want to buy a ZZ4 shortblock and then build it with a nice cam, set of AFR heads and then use the intake carb combo that I was speaking about for the 305, that way I could still goodpower from the 305, while I wait for my 350. Although I do have a TPI system sitting downstairs complete except for a wiring harness (cost $250 ) Plus the cost of the software and hardware needed to make a new chip(s) to make it run right. I figure a carb would be simpler and easier. And five7, I do appreciate your advice.

 

The LO3 heads are really poor, and will hold back any other improvements you try to make. If I were you, I wouldn't bother doing anything else to the 305 and just concentrate on the 350 build-up.

 

The LO3's are that bad eh? I know heads for the 305 won't work on a 350. Alright, well thanks for all your advice.