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Old 05-16-2011, 03:57 PM
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need help bad

I have a 78 camaro with a 468 bbc in it i bought the car ready to race but it had been in storage awhile went through it changed oil plugs ect i had to put a new dizzy in it so i went with an msd pro billet mech advance and i put a kit in the carb its a holley 1050 now the car wont idle below 1500 and is extremely hard to start you have to hold it to the floor and it takes a good 20 seconds of cranking dose this sound like a timming issue or a problem with the carb motor specs are
468bbc
gm rectangle port 427 heads
team g intake
comp 292 magnum came
13:1 ross pistons
msd pro billet
msd 6al
holley 1050 dominator

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Old 05-16-2011, 04:59 PM
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Sounds to me like the carb is way off but it wouldn't hurt to re-check the timing either. check for a vaccum leak also while you are at it.JMO
So was it running good before you re-built the carb and added the new distributer ?


Cole
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Old 05-16-2011, 05:02 PM
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Hard starting

First things first; the cam is way too small for the rest of your combination. What color springs are in the MSD? What do you have the initial timing at? Total timing, and at what rpm?

Ron
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Old 05-16-2011, 05:11 PM
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I know the cam is to small anyways the car was running ok but the carb was leaking fuel and the distributor was all corroded on the inside i have a red bushing 1 blue and 1 light silver spring haven't had the car running good enough to put a light on it before it went in to storage it was running 10.20s in the 1/4
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Old 05-16-2011, 05:13 PM
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Hard starting

First things first. The cam your running is way too small for the rest of your combination. Have you changed springs in the MSD? What is the initial timing? What is the total timing, and at what rpm does it get full advance?

Is the carb flooding the engine from a stuck needle and seat or excessive fuel pressure?

Ron
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Old 05-16-2011, 05:31 PM
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It has been established that the cam is to small but it still should run and idle decent. If the carb is not leaking now go back and re-set the floats and re-adjust the mix, See if it's doing any better then check for a vaccum leak. JMO I am thinking carb/vaccum/timing a combo of all three. IMHO


Cole
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Old 05-16-2011, 06:31 PM
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Just a thought, is there fresh gas in the tank, or the old stuff from when it went into storage?
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Old 05-16-2011, 06:44 PM
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It is fresh gas just put 3 gallons in it today only holds 6 fuel psi is 6 i do not know what the initial timing is just know there is 28* of mechanical advance in at 3000 just wana get this idle issue worked out before i lock out the timing the kit i put in the carb had new needles gaskets and acc pumps in it the idle mixture screws have no effect on it i screwed them in and out changed nothing
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Old 05-16-2011, 06:52 PM
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If it don't change when you adjust the mix tell me you may have a blockage somewhere in the carb or that's usually the case anyway. i would definitely be re-checking that carb. JMO
Or you have the idle screw set to high.


Cole
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Old 05-16-2011, 07:06 PM
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man I used 2 cans of carb cleaner and blew every thing out with air im fixing to send it to prosystems and let them rework it and with the cam being to small what cam would yall recommend it has to be solid or solid roller the converter flashes at 4700 and the car leaves off the trans break at 4300 its a power glide and a moser 9in with 411 gears 29x10.5w tires
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Old 05-16-2011, 08:01 PM
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Quote:
Originally Posted by eloc431962
If it don't change when you adjust the mix tell me you may have a blockage somewhere in the carb or that's usually the case anyway. i would definitely be re-checking that carb. JMO
Or you have the idle screw set to high.


Cole
I was thinking that or a big vacuum leak.
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Old 05-16-2011, 08:05 PM
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Quote:
Originally Posted by willowbilly3
I was thinking that or a big vacuum leak.
yep me too it stiil may be a bad vaccum leak .


Cole
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