383 Stroker Carb Question
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From: Camden NY
St. Jude Donor '10
383 Stroker Carb Question
I had everything under the hood replaced with a 383 Stroker crate engine, Edelbrock 750 carb, ceramic headers, etc., etc.
My local mechanic told me the carb was dumping gas into the engine and fouling the plugs. I asked about adjusting the lean/rich controls, etc., and he said they had adjusted the carb optimally and was still doing it.
He also recommended changing out the carb for a smaller one, like a Holley 550 or equivalent.
I live in a rural area and a Corvette expert mechanic is miles away, etc.
Does the above make sense? The original shop that did the engine conversion "might have" oversold me on what I needed for the engine. But, maybe not.
Opinions welcome.
Bob
My local mechanic told me the carb was dumping gas into the engine and fouling the plugs. I asked about adjusting the lean/rich controls, etc., and he said they had adjusted the carb optimally and was still doing it.
He also recommended changing out the carb for a smaller one, like a Holley 550 or equivalent.
I live in a rural area and a Corvette expert mechanic is miles away, etc.
Does the above make sense? The original shop that did the engine conversion "might have" oversold me on what I needed for the engine. But, maybe not.
Opinions welcome.
Bob
Safety Car
Joined: Jan 2009
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From: New York
The 750 should be fine most Q-jets are 750 and larger on a stock motor , so to suggest you need a 550 is sorta silly. If he can not adjust it I would take it someone who can , or who can tell you x y or z is an issue with the carb.
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From: Tucson Az
An Edelbrock 750 should be ok for that engine it sounds like nobody took the time to set the floats,check fuel pressure,and do the normal things that are supposed to be done when installing a new carb. If you have the book that came with the carb you can do it yourself or bring it to a shop that specializes in performance type work you dont need a "corvette" expert for that.
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From: Camden NY
St. Jude Donor '10
An Edelbrock 750 should be ok for that engine it sounds like nobody took the time to set the floats,check fuel pressure,and do the normal things that are supposed to be done when installing a new carb. If you have the book that came with the carb you can do it yourself or bring it to a shop that specializes in performance type work you dont need a "corvette" expert for that.
I suspected as much but I'm not a mechanic. A local guy that has restored a lot of collector cars said it's against his religion to touch a carb. LOL Said if it was fuel-injected he would. I guess that unless you go to a performance shop, the newer generation of mechanics don't know much or anything about carbs now that fuel injection has been around for a while.
The carb didn't come with a book or pamphlet. I'm trying to locate one in the meantime.
I also just came back from gassing it up after a long winter and it started, idled and ran great, real smooth. I had sprayed carb cleaner before going out. Maybe that helped. Am tempted to take it for a run today, but there's still a lot of snow on the ground, etc.
Bob
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A local guy that has restored a lot of collector cars said it's against his religion to touch a carb. LOL Said if it was fuel-injected he would. I guess that unless you go to a performance shop, the newer generation of mechanics don't know much or anything about carbs now that fuel injection has been around for a while.
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I'm running a 650 Speed Demon on my 383 in my 61 with mechanical secondaries. It runs great. A 383 stroker can handle a 750 as long as it's set up properly. The 550 isn't enough carb IMO.
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From: Camden NY
St. Jude Donor '10
Okay, my head's spinning around after reading countless "how-tos", forum posts, conflicting info, etc. Also came across the Eddy 750 Stumble. LOL
I've downloaded and printed the Edelbrock carb owner's manual.
Now ready to order a tach and vacuum gauge. Would like opinions, if any, on these:
tach: http://tinyurl.com/bhs2upm
vacuum gauge: http://tinyurl.com/asdxw7d
They both had great reviews.
BTW, I should have mentioned that the carb/engine is only 3 years old. How do I tell what the Eddy series # is? Is it on the carb or a code stamped on it?
Bob
I've downloaded and printed the Edelbrock carb owner's manual.
Now ready to order a tach and vacuum gauge. Would like opinions, if any, on these:
tach: http://tinyurl.com/bhs2upm
vacuum gauge: http://tinyurl.com/asdxw7d
They both had great reviews.
BTW, I should have mentioned that the carb/engine is only 3 years old. How do I tell what the Eddy series # is? Is it on the carb or a code stamped on it?
Bob
Last edited by chiefbob; Mar 11, 2013 at 08:35 AM. Reason: deleted duplicate item
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From: Tucson Az
Instructor
Joined: Dec 2011
Posts: 142
Likes: 0
From: Tucson Az
Okay, my head's spinning around after reading countless "how-tos", forum posts, conflicting info, etc. Also came across the Eddy 750 Stumble. LOL
I've downloaded and printed the Edelbrock carb owner's manual.
Now ready to order a tach and vacuum gauge. Would like opinions, if any, on these:
tach: http://tinyurl.com/bhs2upm
vacuum gauge: http://tinyurl.com/asdxw7d
They both had great reviews.
BTW, I should have mentioned that the carb/engine is only 3 years old. How do I tell what the Eddy series # is? Is it on the carb or a code stamped on it?
Bob
I've downloaded and printed the Edelbrock carb owner's manual.
Now ready to order a tach and vacuum gauge. Would like opinions, if any, on these:
tach: http://tinyurl.com/bhs2upm
vacuum gauge: http://tinyurl.com/asdxw7d
They both had great reviews.
BTW, I should have mentioned that the carb/engine is only 3 years old. How do I tell what the Eddy series # is? Is it on the carb or a code stamped on it?
Bob
Thread Starter
Instructor
Joined: May 2010
Posts: 236
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From: Camden NY
St. Jude Donor '10
I've checked and the carb is a 1411 series. Went out just now and started it up, and no problems with warming up and then idling.
Checked on the inline fuel filter and it doesn't have one. I thought the brass fitting where it meets the fuel line inlet had a filter built in like the previous stock Rochester had. If you are asking then I'm assuming one isn't built in.
Checking the Edelbrock manual for the 750, I found the Eddy inline fuel filter # 8873. Ready to order one, but here's my question: it mentions it should not be used where the fuel pressure exceeds 8 PSI. I've seen a reference for the PSI to be ~ 5.5 or so, so I also assume that the > 8 PSI is for high performance or racing?
Thanks,
Bob
Thread Starter
Instructor
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From: Camden NY
St. Jude Donor '10
I've searched Jegs, Summit, Amazon, etc., an no one has this filter. When I look for a replacement, I don't see the anti-drain back valve mentioned in any of them. Any suggestions for a replacement of the Edelbrock filter?
Safety Car
Joined: Jan 2009
Posts: 4,000
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From: New York
You can do a simple fuel pressure test with a harbor freight gauge and once you verify your below 8 psi install a quality in line fuel filter. It is possible your flooding is caused by dirt making that garage who serviced your car a group of compete know nothings .. I mean how do you miss a fuel filter with carb work ????????