I'm getting a little sick of my Street avenger, so I'm selling it and going with a different carb. I have a few questions:

1) What brand?
2) What CFM?
3) I found some remanufactured Rochester carburetors on summit's website. They're priced really high, are they any better then some of the newer carbs or what?


My engine is a 350 shortblock with 2.02 heads and an edelbrock intake. Square port.

It's putting out around 350 hp and 350 lb. ft. of torque.

Thanks.

 

Anyone? Would this carb be good for a street car? Would it be to much or to little for my car?

 

i'd go 750-850 maybe...check out Barry Grant carbs i hear they are good.

 

Barry grant carbs are very good. however, I was looking to spend a little less then that. The kit I linked to is one I really like considering it's cheap (by my standards) and it comes witht he braided fuel line and gauge. howeer a lot of the shops around me reccomended that I use an Edelbrock carb, do to the fact that they are still very good carbs, but they are easier to work on then the holley's.

 

I was also considering this one. What do you guys think?

 

So far I've had great results from a 600 Vac Sec. Holley on my 305 engine.

On a 350 I had a few hundred miles of good driving with a Speed Demon 750 DP.

Next I'm trying a Holley HP from Pro Systems so I'm hoping it's dead nuts on with the tune.

Both carbs you posted "should" work just fine but I looked around Jegs and I liked seeing these two versions here. http://www.jegs.com/cgi-bin/ncommerc...90&prmenbr=361

Demon would be cheaper around $399

I wouldn't worry so much about the size. Anything from 600-800 should work fine. Doing a 750 is the convenient way. Cost and reselling is easier, etc.

 

I think that last one is out of he question since it doesn't have a choke and that's one of the reasons I'm getting rid of the Street Avenger. Can someone tell me what the difference is between a vacuum advance and a mechanical advance? Which one is better?

 

Check out this article as i did first before buying a carb. Very helpful magazine which I used as a Bible to rebuild my entire car inside and out.

http://www.chevyhiperformance.com/te...ose/index.html

 

Good article. Although I'm not going to get Holley's 4150hp series, becaseu it's a little impractical, I'd really like to get this carb. After reading that article, it seems as though a 650cfm carb is exactly what I'm looking for. Does anyone else agree?

Now I'm mainly deciding between The HOlley carburetor posted above, or this one. I really like the Edelbrock do to the electic choke and the awesome finish, but the Holley is a little cheaper even with fuel line. Which carb would give me the best perfromance out of those 2 or a nother one comparable in price and specs/features to those ones?

 

I went with this the EDL-1406 although its not emissions legal. There is one that is legal its the EDL-1400. It is 600 CFM and sells for $265. Im not certain but I think the Thunder series maybe only for off road vehicles.

 

I would have to agree that 600-650cfm for an engine of that type will probably have much better response/driveability, and still plenty of performance. Holley's CFM formula would have that engine using just under 600 cfm @ 5800 Rpm (that's assuming 100%VE..which most street engines are more like 80-90%VE). The smallest carb that's still big enough is always the best choice. It's very common to see people going a little too big when it comes to carbs. I'd probably go w/ the Edelbrock if it's predominantly used on the street (but that's just my opinion).

 

600? doesn't that seem a little small?

 

depending on your alltitude, 600 should be plenty. i have a friend with a 76 nova running 410 dynod hp with a 600 carb, but we sit at 7200 ft. so 600 should be plenty for about 350 hp.

 

I really like the Thunder series from edelbrock, however I can't get that in 600cfm. I can get the Perfromer series in 600cfm, but Edelbrock describes that carb for "MIld perfromace street, calibrated for economy." Plus I don't think 650 is to big. using the equation from that article, I should use a 628cfm carb. That's with a 350 engine and 6,200 max rpm. Plus the Thunder series will most likely perfrom better and it has adjustable secondaries where the Perfromer series does not.

 

Your 14 years old..granted you may have taken some mechanical courses...but how would you really know if the 600 CFM is too small or not?? Your parents must be rich to be able to afford the gas that the carb you prefer will be inhaling!! Good Luck!!