ALUMINUM MANIFOLD STUDS

[Joe D.]

I have a 1961 with 2x4's. Are the studs for the carbs suppose to be aluminum or steel? Thanks as alway for the help. Joe DeLuca Member#37862

[Mike M.]

Re: ALUMINUM MANIFOLD STUDS

steel. mike

[Joe D.]

Re: ALUMINUM MANIFOLD STUDS

Mike, I have a 245hp engine, should one of the studs be hollow for a vacuum advance tube? Thanks, Joe

[Mike M.]

Re: ALUMINUM MANIFOLD STUDS

Joe my 61 270 hp didn't have any hollow studs but i've seen hollow studs in past (50 and 60s GM Pass cars?) If carbs off intake, look down into each of the 8 drilled and tapped holes in the intake and if none communicate with the inside of the intake, then none could supply a vac. source for the vac adv canister.mike

[John H.]

Re: ALUMINUM MANIFOLD STUDS

Joe -

The 1110891 distributor (used on both 245 & 270hp 61's) didn't have vacuum advance. If you're using a different distributor with a vacuum advance, you can use a fitting in the back of the rear carb base (in place of the hex plug that's there now) - Paragon's #755 will work just fine.