jets size for my 440?

jets size for my 440? - 01/24/11 08:54 PM

okay last summer i battled with my timing and it wasnt that now heres my deal i bought a 484 comp cam for my 440 running 10.1 comp with 346 heads with a stock outta the box elderbrock performer 750 carb what size jets should i be using with with this cam i also have a performer intake a dual plain mopar electroic ignition i think im gonna go buy a zip kit this friday dont now when ill start on the mighty fury battle again but my muscle car bug is starting to bite again

Attached picture 6436147-30635_388089791081_593006081_4508503_5891239_n.jpg

Posted By: RapidRobert

Re: jets size for my 440? - 01/24/11 10:37 PM

I'd think the performer 750 would be jetted fairly rich out of the box. refresh us on the symptoms.

Posted By: Mobarge

Re: jets size for my 440? - 01/24/11 10:44 PM

Your combo is fairly close to one I had a while back, and I was running the Eddy carb - got rid of it after months of trying and went with the Mighty Demon 750. Right off, it solved most of the problems I was having.

Posted By: Mr.Yuck

Re: jets size for my 440? - 01/24/11 10:53 PM

Quote:

Your combo is fairly close to one I had a while back, and I was running the Eddy carb - got rid of it after months of trying and went with the Mighty Demon 750. Right off, it solved most of the problems I was having.

don't say that the carterbrock faithful will hear you.
That said, buy the jet kit and have a go at it. I think they are shipped with almost the biggest rods. Make sure the floats are set well and yo have no more than 7psi of fuel pressure. Then tune it with a good vacuum gauge. Also you timing should be set beofre you try and adjust the carb.

Posted By: JohnRR

Re: jets size for my 440? - 01/25/11 12:34 AM

Quote:

Quote:

Your combo is fairly close to one I had a while back, and I was running the Eddy carb - got rid of it after months of trying and went with the Mighty Demon 750. Right off, it solved most of the problems I was having.

don't say that the carterbrock faithful will hear you.
That said, buy the jet kit and have a go at it. I think they are shipped with almost the biggest rods. Make sure the floats are set well and yo have no more than 7psi of fuel pressure. Then tune it with a good vacuum gauge. Also you timing should be set beofre you try and adjust the carb.

This is one case where your standard

get a holley and never look back ... would be a welcome response , the performer 750 is a piece of junk .

Posted By: Mr.Yuck

Re: jets size for my 440? - 01/25/11 01:28 AM

Quote:

Quote:

Quote:

Your combo is fairly close to one I had a while back, and I was running the Eddy carb - got rid of it after months of trying and went with the Mighty Demon 750. Right off, it solved most of the problems I was having.

don't say that the carterbrock faithful will hear you.
That said, buy the jet kit and have a go at it. I think they are shipped with almost the biggest rods. Make sure the floats are set well and yo have no more than 7psi of fuel pressure. Then tune it with a good vacuum gauge. Also you timing should be set beofre you try and adjust the carb.

This is one case where your standard get a holley and never look back ... would be a welcome response , the performer 750 is a piece of junk .

what???

Posted By: bigblockbryan

Re: jets size for my 440? - 01/25/11 08:20 PM

well it would run really good not under load then as soon as there was load it would start to miss bad at peak rpm and i timed the be jeus outta that motor last summer im actually thinking about pulling the motor next month and just having it dyno tuned but on the other hand would like to now what im doing for my next build too

Posted By: Mr.Yuck

Re: jets size for my 440? - 01/25/11 08:26 PM

might not be a carb problem, have you checked your volts at the coil? I had a balast go bad and guess what ot would start run fine as soon as you dropped it into gear it would flutter and die...just a thought.

Posted By: bigblockbryan

Re: jets size for my 440? - 01/25/11 08:30 PM

yea i believe i checked it i will keep it in mind come spring furys under 2 feet of snow maybe ill go buy a new coil i have had the same one on it since 2003 i got ballast resister up the tail but im pretty sure changed that around

Posted By: greenpigs

Re: jets size for my 440? - 01/26/11 01:01 AM

How old are the spark plug wires & what brand are they?

Posted By: bigblockbryan

Re: jets size for my 440? - 01/26/11 09:08 AM

theyre acell 3-4 years old never had a single problem with this engine untill i put this 484 cam in. I had a resto mod cam before then what happened was i had a bad fuel pump that leaked gas into the block wrecking the bearings and the cam so i decied when i replacd everything to up the cam in it to the 484

Posted By: greenpigs

Re: jets size for my 440? - 01/26/11 11:34 AM

I have not heard good things about those wires. Even if you don't think they are a problem I would check them for ohms resistence...you may be suprised. 150 ohms per foot is the MOST I would let slide. Firecore50's are yep 50 ohms per foot and worth the coin if you find your current wires suck.