Thread: converting from holley to edelbrock

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Originally posted by shine
sorry guy, i'm thinking of the 4010/4011 carb. thought of it last nite but i got the damn flu and just did'nt want to get out of bed.

hope you feel better soon shine.

hey no problem, your not being a smartass. Ill take as much info as possible. Well when i had this at sea level with a bigger carb, the thing didnt have a problem at all. Now im at 4000 ft level and have had this problem. Then i switched down to a 750 which is what i have on now, and same problem.
The carb i have on right now though i think is more for racing too. Not sure if thats the full reason or not. Its a holley 4150 hp 80528-1
I do know i have a return line, and i do belive its hooked up correctly. I dont have a mechanical pump on there at all, so it cant be the diaphram. Also, the float levels are perfect right now. Another thing i was wondering is, can a fuel pump be too powerful?

Thanx for all the help. I decided to just try a new carb because no seemed to have a clue, and if they did then it was something i had already checked.

thanx

no problem shine. Stay in bed and take care of yourself.

thanx

"can a fuel pump be too powerful"?
They can be, but you said you had 5 lbs. of pressure, so its not what the pump will do, but what you actually have at the carb.

ok, makes sense.

thanx

Do you think this carb would be a good one? I use it all for street, but the one i have on right now is just like this but is for racing and is mechanical secondairies.

http://cgi.ebay.com/ebaymotors/Holle...spagenameZWDVW

I still havent switched carbs yet to try the carter, but if i do stay with holley, this looks like a good deal to go with.


thanx

How old is that carb? You can't have a 30 carb,and expect for it to run fine with a simple rebuild.I have also dealt with holley ,and it is hard to get any kind of answer.Holley is not even owned by Holley,I think edelbrock owns it just like a lot of other big names.Holley is still a excellent carb though.

Originally posted by BigTruckDriver
How old is that carb? You can't have a 30 carb,and expect for it to run fine with a simple rebuild.I have also dealt with holley ,and it is hard to get any kind of answer.Holley is not even owned by Holley,I think edelbrock owns it just like a lot of other big names.Holley is still a excellent carb though.

The last I knew Holley,NOS,Weiand,Lunati where the same company Holley performance brands.

I knew it was something like that

I think, not positive but i think its from the early 90's. Looks a lot older but i think the guy that i got it from bought it from a machine shop in the early 90's, so im assuming that it was brand new.

Originally posted by erik erikson
The last I knew Holley,NOS,Weiand,Lunati where the same company Holley performance brands.

and Hooker Headers, Flowtech Exhaust and Earls.

Sounds like you are getting some serious ring wash. Could be a number of problems. Carb could be way to rich, or it could be bleeding down, or you not pulling enough vacuum to keep the power valve shut, or your needle and seats or bad, or your tuning could be way off due to altitude. That double pumper isn't good either for street use.

Really need more info to help diagnose the problem.
What are the engine's specs and it's size?
What is it in?
Are your plugs fouling?
Does the engine flood real easy?
What size jets and squirters do you have in the carb?
What does the engine run like?
What type tranny?
What stall speed?
What rear gear?

List all specs on engine such as cam, heads, intake, ignition, and cubic inches.

Ok.
Its a 454 with 10:1 compression, 292 dur cam with 590 lift. Edelbrock 6055 rpm performer heads. Super victor manifold, Msd and msd ignition system.
The carb has 31 size squirters, and the engine seems to run good except when idleing. I dont see black smoke, and the engine reponds good. The engine will warm up and it will idle at about 1100 rpms which is where i want it, and then after driving the idle will go up to about 1400 rpms. The plugs are black, but they dont seem to be affecting anything, but they are pure black within 10 miles.

The tranny is a th400 with a 2800 stall and 456 gears.
I have low engine vacuum witch is only at 5hg in gear and 8hg in park. I tried down to a 2.5 power valve and still had the same problem.

If i left any thing out let me know.

david

do you guys think i should try a differant carb first? Or maybe do a leak down tester on the engine? I dont have the equitment for the leakdown test, but i just dont want to go in circles with another carb as i did with this one.

thanx again

i would try to borrow another carb to try. once you get a lean tune on it it's going to take some hwy miles to reseat your rings.