I have obtained a Holley 4bbl. DP. #0-4777-2 carb (4150) I could not pass up for 50$, and it was used for under 3 months in a 302, it is in great condition. The engine I have is a 400 ci, 3030817 casting, bored 30 over, decked&squared, align honed.Has hydraulic 214/224 @.050 cam w/ .444/467 lift,112 LSA. Flat top 9.8:1 compression pistons, 5.7 rods. #333882 heads, (1.94/1.50), planed, 3 angle, ported heads, using Felpro blue head gaskets (.039). Weiand Stealth dual plane intake. New Street performance HEI, 50,000 volt coil.

The carb has 67 mains, 76 secondarys, and a 65 primary power valve with a primary discharge nozzle of .028. What would I be better off to do, to improve primaries, and powervalve to different size due to chance of lean start up on fresh engine? Also would one of Holley's "Trick" kits for the carb be benificial, as the carb has been setting for 5 months now, and probably needs kit anyway?


Engine is going into a
3200 lb Chevy, 350 TH, Transgo II shift kit, 2800 stall converter, 3.42 gears on 26" tires. Flowmaster headers, crossover pipe, Dynomax mufflers. Only for weekends, and ocassional trip to the strip. I am on a budget, and I try to spend my money wisely, making the most of what I have. Any advice or thoughts would be greatly appreciated!

The carb you have is more like 15 years old. The -2 carbs are from the early to mid eighties. I would rebild the carb, use the trick kit, it comes with parts that will be helpful in tuning your carb. Good luck.

Steve R.

Paul, the carb sounds OK to bolt on and run, but if you are worried about the gaskets and internal condition, go ahead and buy a trick kit and do a general rebuild on it including setting the float and power valves front and rear. Also make sure your accelarator pump rod is adjusted properly. I am not sure what you mean with a lean start up other than popping through the carb or running hot upon breakin. The one thing you can do for the engine to run a little cooler during this break in period is to richen the main jets a couple of steps to a 72. The power valves have nothing to do with idle richness if you are holding enough idle vacuum to keep them closed, which your cam sounds mild enough to make this happen. A 6.5 is a good valve to start with so I would not change this rating. The sqirter size is also good for your application so start there. If you are experiencing a off idle stumble, you can richen the pump shot with a bigger sqirter size, but you probably wont notice this until you drive the car for the first time. Just make sure your timing is set close and fire the engine up and do a cam break in, then start your tuning of your carb. Sounds like you are off to a good start, and a real good deal on the carb to boot! Good luck and keep all of us posted.

Yup, just freshen it up with new gaskets/needles and seats and plug in a set of 70 or 72 jets ( I'd try 70's). then you can tune it once the motor is broken in .

If you have a buddy who would let you bolt it on his mill ( or hers), it'd be nice to set the floats and idle, but you can get the floats real close by eye during the rebuild.

Paul, is that you???? Glad to see you checked out the site.

------------------
Chaas
Gold #62/ACES
67 SS396/L88
www.chevelles.com/showroom/chaas1.jpg (http://www.chevelles.com/showroom/chaas1.jpg)

[This message has been edited by Gene Chas (edited 03-07-2000).]

Thanks for all the responses, and advice. Yes Gene, I checked out the site,(a very good site I might add!)a lot of informative people here, and I joined the other day.

Thanks again Gene for your help! One other question: with my new HEI, would I be better off using the original counter weights and springs, or use the Mr. Gasket set with the heavy springs? Thanks again.

<BLOCKQUOTE>quote:</font><HR>Originally posted by Gene Chas:
Yup, just freshen it up with new gaskets/needles and seats and plug in a set of 70 or 72 jets ( I'd try 70's). then you can tune it once the motor is broken in .

If you have a buddy who would let you bolt it on his mill ( or hers), it'd be nice to set the floats and idle, but you can get the floats real close by eye during the rebuild.

Paul, is that you???? Glad to see you checked out the site.
<HR></BLOCKQUOTE>