I have a Pontiac 400 with 700r4 an Holley 600 carburetor. Car idles pretty good but when I go to put it in drive it just cut off. Not sure what it could be ,any help would be appreciated.
I will install the power wire. I'm not to sure what to look for when checking the vacuum lines.You're missing a power wire on the electric choke which means the choke will always be on. Have you checked all the vacuum lines?
I will install the power wire. I'm not to sure what to look for when checking the vacuum lines.
That port on the carb is where the distributor vacuum advance plugs in, for ported vacuum, or "timed vacuum", as it were. From the looks of it, you have your vacuum advance plugged into the base plate, for manifold vacuum so you're getting extra timing at idle, instead of at cruise speeds when vacuum is low. .
Kinda depends on the engine as well. My 429 BBF from '70 didn't like manifold at all, but ran like a top on ported. My 8:1 SBB could have really given a damn either way, and my 10:1 '70 SBB likes ported as well. My uncles stock 307 Chevy C/10 liked manifold though.Ported makes the engine run hotter burning off more pollutants. Before the emissions crunch the vacuum advance was hooked to the mainfold vacuum which will give you better performance.
GBodyForum is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com. Amazon, the Amazon logo, AmazonSupply, and the AmazonSupply logo are trademarks of Amazon.com, Inc. or its affiliates.