Author Topic: Help! Fuel bowls on my Holley are boiling (Read 9845 times)

Chryco Psycho · « **Reply #30 on:** August 13, 2006 - 12:52:15 AM »

he has the PCV hooked up correctly , that model has the side port for it generally pumping it has to do with it being lean , this also casues the back fires
the choke is probably not coming on to help starting , also check for vacuum leaks , I bet the intake is loose right now on your engine , when you install the new intake gasket make sure you tighten the intake a number of times for the next couple of weeks after installing it

422STROKER · « **Reply #31 on:** August 13, 2006 - 07:35:33 AM »

Sorry bout that I see it now in the first pic I saw the pcv in the later pic w/cap on it!(driver's side)

Tom

widing'cuda · « **Reply #32 on:** August 13, 2006 - 07:53:19 AM »

Took the 'cuda for a drive just about 10 min ago. It started up really easy after sitting just one night. And it ran ok when I stop at the first stop light. Then I went on the freeway for a wild to worm it up. And then I took a full throttle drag

When I went of the freeway I had to keep the engine over 1000rpm even when the car was rolling. So I guess need the exhaust block off under the intake. Oh I found out the that Holley is leaking fuel as well on the passenger side (can see fuel on the intake, and on the crab, and I smell it when I drive). So that took the cake, the Holley must go!!!

Anyone have a good 750 Carb to recommend?
I was thinking Edelbrock 750 cfm, square-flange, manual choke #1407*
As it's just a bolt on Carb, only need to set the idel

Grancoupe · « **Reply #33 on:** August 13, 2006 - 09:07:47 AM »

Hey widing'cuda,
I'm not sure that Edelbrock sell Holley type carbs. They do have those Carter type things. Not a very good design as far as I experienced. I tried one for about 2 years and did nothing but run slow. It tunes great but not alot of performance potetial. No wonder Holley is all you see at the drags. I still have the seperate $100.00 tuning kit that I no longer need since the carb got stolen from sitting on a shelf for a while. Bolted on a Holley and it was night and day. Even went out that very night and blew the doors off my friends 70 Camaro. He never saw it coming. Funny thing is that there were a bunch of friends to see it. They thought I swapped the motor. I had to pop the hood to show them. So long story short, I would recommend giving a Holley style carb another try. I tried the Edelbrock after a bad Holley experince but happy I went back. The only thing I would hold higher than a Holley is fuel injection. $$$

widing'cuda · « **Reply #34 on:** August 13, 2006 - 09:21:48 AM »

Quote from: Grancoupe on August 13, 2006 - 09:07:47 AM

Hey widing'cuda,
I'm not sure that Edelbrock sell Holley type carbs. They do have those Carter type things. Not a very good design as far as I experienced. I tried one for about 2 years and did nothing but run slow. It tunes great but not alot of performance potetial. No wonder Holley is all you see at the drags. I still have the seperate $100.00 tuning kit that I no longer need since the carb got stolen from sitting on a shelf for a while. Bolted on a Holley and it was night and day. Even went out that very night and blew the doors off my friends 70 Camaro. He never saw it coming. Funny thing is that there were a bunch of friends to see it. They thought I swapped the motor. I had to pop the hood to show them. So long story short, I would recommend giving a Holley style carb another try. I tried the Edelbrock after a bad Holley experince but happy I went back. The only thing I would hold higher than a Holley is fuel injection. $$$

Thanks for your input. I think Edelbrock only has the carter styled carbs. What do you think about Demon Carbs? My carb is a bit small for a 383, 600cfm. I checked with Holleys web site and they recommended a 730cfm or 750cfm. Oh Edelbrock recommended 750 as well. As for Demon, I don't get the difference of some of the carbs they have, except the ones for racing which is not for me anyway.

MEK-Dangerfield · « **Reply #35 on:** August 13, 2006 - 09:24:55 AM »

I know of a couple of people that weren't crazy about Demons. A 750 Holley is what I recommend. It's not your's failed. It's just waaay too small, and needs rebuilt.

Mike

Chryco Psycho · « **Reply #36 on:** August 13, 2006 - 10:10:07 AM »

for now 2 $4 gaskets will fix the Holley you have , I too am not a fan of the Eddy carbs , my first choice would be a Holley second would be a Proform

widing'cuda · « **Reply #37 on:** August 13, 2006 - 01:56:31 PM »

Ok, I'll check for a set of gasket. What is that sucks with Eddy Carbs? To me it seems liek the best choise as it very easy to deal with, as I don't know a thing about carb tuning.

Grancoupe · « **Reply #38 on:** August 13, 2006 - 08:40:37 PM »

Too many variables with tuning. There are rods and springs that you have to choose from. Each having its own values. The rods have different progressions from idle to power and the springs have different resistences to vacum signals controling the rods activations. If that doesn't sound coinfusing enough try reading the book! It all sound like it makes sense in the book, but without actual data like from a dyno your kind of guessing. And again, the things just don't make the power that the Holleys do.

As far as the Demons go. I have ony run Holleys. When I came to point of needing a new Holley I considered Demon. I went to one of the local speed shops I used to work at and asked for their input. They have a dyno and do ocassional dynno runs for conpanies like NOS and Barry Grant. They like the race lines that Demon has to offer but were a little dissatisfied with the milder models. Said the end result for the mild stuff was still worth going Holley. Demons made more power on the race models than Holley race stuff. Bla Bla Bla. Take it for what its worth. Wonder what the rest of the members think...

Chryco Psycho · « **Reply #39 on:** August 14, 2006 - 01:12:24 AM »

Eddys simply do not have provisions for tuning most of the circuits properly so it is just a compromise , if you do not want to tune they work OK but they will leave 20+ hp & often a lot more untapped
not a demon fan either , pooorer idle quality & transition to full power

moper · « **Reply #40 on:** August 14, 2006 - 11:13:09 AM »

The line is in the wrong spot. Heat rises. far away but above is still bad. That's why the factory ran the feed lines low on the frame. Also, you want to minimize the length of line exposed to heat,. The Holley feed is on the Drivers side, but you dont need to loop all around the engine. Bring it low from the rear, turn left off the frame, under the alternator, between the dist and water pump housing heater hose fittings, and then either back to the rear or across and up to the inlet of any carb. Short, direct, safe, and cool. (the fornt of the engine also gets hit with air from the fan and radiator cross flow. Also, copper line transmits more heat than steel. Aluminum more than copper. Rubber is only used for connections that need to move or flex.
Any carb you install has the chance of having the same problem. In terms of carbs..An edelbrock on a mostly stock engine will almost always run fairly well out of the box. They take adjustments like every other carb out there. In fact, in some ways, they are much easier to tune than a holley or holley clone. You dont need to drain the bowls, you can change power enrichment volume and timing, (holleys you can change the vaccum level, but not the flow rate), you can change the secondary air door timing (AFBs require grinding, AVS is just a screwdriver adjustment). You cant change air bleeds, but the Carter design is not as dependant on them as the Holleys and clones are. They do have a better idle quality than any Holley. A Thermoquad is the pinnacle or Carters. They are incredibly adjustable, which is why only some guys can make them run well. Most guys nowadays are not as well versed in Carters as in times past. So you hear "put on a Holley and you're done". Demons are infinately adjustable, but you need two things for them. First, some dyno or seat time to get them dialed in..Second, you have to ignore most of what you think you know about Holleys...lol. I'm defiantely NOT a Demon fan. I'd run a plain Edelbrock 750 AFB. It will be a little lean for a 383 out of the box, but a simple rod change and youre done. You dont even need to get fuel on your fingers

.

MEK-Dangerfield · « **Reply #41 on:** August 14, 2006 - 02:40:52 PM »

Just to throw something else in here... regardless of what carb he goes with, just moving from a 600cfm to a 750 will wake that engine up big time.

Mike

widing'cuda · « **Reply #42 on:** August 16, 2006 - 06:25:37 AM »

Quote from: moper on August 14, 2006 - 11:13:09 AM

The line is in the wrong spot. Heat rises. far away but above is still bad. That's why the factory ran the feed lines low on the frame. Also, you want to minimize the length of line exposed to heat,. The Holley feed is on the Drivers side, but you dont need to loop all around the engine. Bring it low from the rear, turn left off the frame, under the alternator, between the dist and water pump housing heater hose fittings, and then either back to the rear or across and up to the inlet of any carb. Short, direct, safe, and cool. (the fornt of the engine also gets hit with air from the fan and radiator cross flow. Also, copper line transmits more heat than steel. Aluminum more than copper. Rubber is only used for connections that need to move or flex.
Any carb you install has the chance of having the same problem. In terms of carbs..An edelbrock on a mostly stock engine will almost always run fairly well out of the box. They take adjustments like every other carb out there. In fact, in some ways, they are much easier to tune than a holley or holley clone. You dont need to drain the bowls, you can change power enrichment volume and timing, (holleys you can change the vaccum level, but not the flow rate), you can change the secondary air door timing (AFBs require grinding, AVS is just a screwdriver adjustment). You cant change air bleeds, but the Carter design is not as dependant on them as the Holleys and clones are. They do have a better idle quality than any Holley. A Thermoquad is the pinnacle or Carters. They are incredibly adjustable, which is why only some guys can make them run well. Most guys nowadays are not as well versed in Carters as in times past. So you hear "put on a Holley and you're done". Demons are infinately adjustable, but you need two things for them. First, some dyno or seat time to get them dialed in..Second, you have to ignore most of what you think you know about Holleys...lol. I'm defiantely NOT a Demon fan. I'd run a plain Edelbrock 750 AFB. It will be a little lean for a 383 out of the box, but a simple rod change and youre done. You dont even need to get fuel on your fingers .

What kind of steel should I use for the fuel line. I'll try and shorten it and rerout it like you said. I'll replace the carb to a eddy 750 to (got this recommended here in Norway as well). how large rod shoulf i have. how hard are they to replace?

Chryco Psycho · « **Reply #43 on:** August 16, 2006 - 09:00:41 AM »

if you must use an Eddy carb at least get a Thunder series Avs style that ahs a bit more adjustability to it

widing'cuda · « **Reply #44 on:** September 03, 2006 - 08:09:50 AM »

I got myself a Eddy Performer 750cfm (PN#1407) Was recommend by many here in Norway (and they are closest if need som help). Replaced the Holley with the Eddy and replaced all the old fuel lines in the engine room. Rerouted the fuel line from the pump and right up to the carb like it came from the factory. Replaced the fuel filter and moved it from before the pump to after. Man was the old fuel filter dirty! Fire up the 'cuda and adjusted the idle. Went for a ride, and MAN was I happy. Now everything work like it should and I got a little more power. But I need to take new test ride now that I have readjust the kickdown linkage more corectly, before I know for sure how much "new" power I got. Sadly it has started to rain. But as soon as it dries up I'll take the 'cuda out in the sun

Author Topic: Help! Fuel bowls on my Holley are boiling (Read 9845 times)

Chryco Psycho

Re: Help! Fuel bowls on my Holley are boiling

422STROKER

Re: Help! Fuel bowls on my Holley are boiling

widing'cuda

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Grancoupe

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widing'cuda

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MEK-Dangerfield

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Chryco Psycho

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widing'cuda

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Grancoupe

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Chryco Psycho

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moper

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MEK-Dangerfield

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widing'cuda

Re: Help! Fuel bowls on my Holley are boiling

Chryco Psycho

Re: Help! Fuel bowls on my Holley are boiling

widing'cuda

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