72ScampTramp
Scamp Tramp
I have a Weiand D port Tunnel Ram! motor build in progress. i have 2 600 cfm VS holley carbs! Now these run off vacuum but there isnt a port in the tunnel ram what do i need to do?
The secondaries are pulled open by increased air flow, with rpm, thru the venturies creating vacuum at a small port just above the booster area. They act independent of engine vacuum. No manifold vacuum signal needed.
It would be a good idea to reference the two pods together so both carb secondaries open simutainiously. You can use a kit, like below, with a piece of vacuum hose between the two, to accomplish that.........
http://www.summitracing.com/parts/hly-20-73/overview/
Ok! I think I understand the vacuum created by increased RPM will pull the secondaries open. And with that Kit will pull them open at the same time? So just like DJVCUDA's set up run a vacuum line from one port to the other?
You can buy two vacuum pod tops with a nipple for that connection right from Holley.
moper said:Rick - look close at Dave's pic... The new ones are phenolic and are quick change tops... :wink:
Yeah Dave, those are the ones i put in my earlier link. I thought you were talking about the old cast tops, like the ones i used years ago......sorry.:icon_smi: I've seen those now for like $60-$70 a piece, yikes!
So lets go a step further. Much appreciate you guys helping me. My first build and very little tinker time with engines. Now i have a Vaccuum advance distributor. Where does that tie into?
http://www.summitracing.com/parts/maa-4757801. Thats the distributor I have should i just go ahead and run it as a mechanical advance instead?
Sorry i haven't been here as much as i used too, so i haven't kept up with your build or how much street/track time you will use it for. My opinion is, if it's any different then mostly track and very limited street....run the vacuum advance. Ported or manifold vacuum can open a whole can of worms here, but either way it should help you run cleaner on the street with that carb/manifold setup.
Depending on your preference.....ported or manifold vacuum.......
Ported is on the primary metering block and manifold would come off a port on the baseplate........
So I can hook the distributor to the port side on the metering block? And thanks glad you like the combo! I beat myself up over and over to get to the final combo. With the help of others.