Big Block Hot Cam Vacuam Advance CAn

[Anthony P.]

Working on a 69 big block with a Big Cam (low vacuam) does anyone have a recommendation for a distributor vacuam chamber that with work beter then a stock one?? Engine has about 8-10 inches at Idle now

Thanks in advance

Tony

[William C.]

Re: Big Block Hot Cam Vacuam Advance CAn

Working on a 69 big block with a Big Cam (low vacuam) does anyone have a recommendation for a distributor vacuam chamber that with work beter then a stock one?? Engine has about 8-10 inches at Idle now

Thanks in advance

Tony

Per Delco test data, part number 1116089 starts at 4-6 inches and all in at 7.5 inches, also 1116120 at the same specs, 1116125, stsrts 4-5 in at 10.0-12.5, 1116158 start 5-7, all in at 7.5-10, 1116170 start at 2.5 all in at 7-9, look like your best choices.

[Anthony P.]

Re: Big Block Hot Cam Vacuam Advance CAn

Thanks It is just what I was Looking for!!

Thanks Again

[Duke W.]

Re: Big Block Hot Cam Vacuam Advance CAn

You want the VAC stamped "B28". It is available in a number of different brands, including Delco, but all are the exact same part made by Standard Motor Products. Lots of discussion in the archives.Duke

[Anthony P.]

Re: Big Block Hot Cam Vacuam Advance CAn

Thanks Duke

Do you know the approx vacuam points on this (Inches) of vacuam?

Tony

[Duke W.]

Re: Big Block Hot Cam Vacuam Advance CAn

Start @ 4", 16 (at crankshaft) @ 8" are the nominal specs.

Duke

[Anthony P.]

Re: Big Block Hot Cam Vacuam Advance CAn

Ok that sound great

Tony