650 speed demon help
#1
Junior Member
JOURNEYMAN
Thread Starter
Join Date: Oct 2005
Posts: 25
650 speed demon help
Have a 355 chevy with a edelbrock performer package in it and vortec heads. I put on a 650 speed demon and the car has a bog when you hit the throttle for a second or 2 before it takes off. It is a vacume secondary carb should i go with a stiffer spring to slow down the secondaries.
#4
Senior Member
RACING JUNKIE
Join Date: Jun 2003
Location: Hobbs, NM
Posts: 842
Re: 650 speed demon help
Originally Posted by purplemonte
Have a 355 chevy with a edelbrock performer package in it and vortec heads. I put on a 650 speed demon and the car has a bog when you hit the throttle for a second or 2 before it takes off. It is a vacume secondary carb should i go with a stiffer spring to slow down the secondaries.
#5
Senior Member
EXPERT BUILDER
Join Date: Oct 2007
Location: Staunton,VA.
Posts: 254
650 demon help
I agree w/ dparker. Sounds like a similar situation we were having w/ the monte that I was telling you about. Except the factory distributor was the problem so he bought a new HEI dist. hooked up the vacuum advance and that cured it. Since he drives it everyday this was a good choice for his pocketbook. Kris