Vacuum lines for Dual Sync Distributor? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

broberson · 10-02-2021, 08:16 PM

I've got a 1970 C10 with a 383 stroker, 650 cfm carb, and HEI distributor. I want to put in a 700r4 transmission and convert to fuel injection. From what I've read, I'll need a dual sync distributor for the Holley Sniper EFI system.

Currently on my distributor, the vacuum lines run from the manifold to the distributor and the transmission. The dual sync distributor doesn't have the vacuum port. Where do I attach the vacuum lines to actuate the transmission if I convert over to an EFI system?

10-02-2021, 08:16 PM	#1
broberson Registered User Join Date: Dec 2018 Location: Austin, TX Posts: 59	Vacuum lines for Dual Sync Distributor? I've got a 1970 C10 with a 383 stroker, 650 cfm carb, and HEI distributor. I want to put in a 700r4 transmission and convert to fuel injection. From what I've read, I'll need a dual sync distributor for the Holley Sniper EFI system. Currently on my distributor, the vacuum lines run from the manifold to the distributor and the transmission. The dual sync distributor doesn't have the vacuum port. Where do I attach the vacuum lines to actuate the transmission if I convert over to an EFI system?



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