Thread: MSD Ready to Run
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06-30-2007 05:06 PM #1
MSD Ready to Run
I was reading a forum and it was mentioned that a stock chevy distributor with points needs a timed vacum port and a HEI should have its vacuum hooked to a ported source. My question is, Is a MSD ready to run distributor considered HEI and should the vacuum advance be connected to a ported vacuum or constant vacuum ? I have a MSD ready to run distributor that has the vacuum advance hooked to the timed vacuum port of a Edelbrock 1405 carb. I do have a flat spot on accelaration after comming out of a turn at an intersection, now I'm not sure if I have the Vacuum in the right port ? Any and all help would be appreciated.
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06-30-2007 05:11 PM #2
Try it from both sources and choose the one that works best.PLANET EARTH, INSANE ASYLUM FOR THE UNIVERSE.
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06-30-2007 08:22 PM #3
Denny, thanks for the reply. The motor is a sbc 350 30 over 4 bolt main with a Crane came 218 dur .450 lift, not sure what year, purchased from The Engine Store in Minnisota. 700 r4 trans. It does not matter which way I turn, it will heisatate when I'm coasting and then accelarate again. Not sure of the rpm.
The timing is 15 base and 35 advance at 3000 rpm. Her's the rest of the set up.
msd ready to run Dist
Edelbrock RPM intake
Edelbrock 1405 carb manual chock
cc head chevy cast
Headers
I hope this helps. If not let me know and I will post
Thanks again Denny
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07-01-2007 06:51 AM #4
Thanks Denney I will give it a try and let you know.
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07-04-2007 07:50 AM #5
I retimed, 8 BTC hooked the vacum up to full. The motor performs much better. I checked to see if the carb pump shoots when the pump is moved and it does, Still has the flat spot, the only thing I have not checked is the fuel pressure, I will get a gauge and fittings and reply back with results.
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07-15-2007 03:31 PM #6
I just got a fuel pressure guage and checked the pressure. It shows 9 psi, the Edelbrock manual states that this carb (1405) requires 6.0 psi. Would the 3 psi make that big of a difference in the performance of the carb ?, causing the flat spot that I am experiencing ? The carb is only 6 mos old with 325 miles. If I need to purchase a pressure regulator, do you have any suggestions.
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07-15-2007 03:35 PM #7
I for got to mention that the flat spot is at 1000 to 1200 rpms.
on small cars yes. but fat fender cars are pretty much the same in size and weight as the donor car. i found s10 brakes work great on fat fender and pickups. a deuce will just need manual brakes...
Time for brakes