optispark vacuum harness ?

[belfiglioval]

ok can anybody provide a link with instructions and diagrams on how to hook up the opti vacuum harness, im converting my 94 opti to a vented system and im not sure how to hook up the harness. thanks,

 

[Crimson Thunder]

On my 94 LT1 Camaro i teed off of the vacuum port on the left side of the intake manifold.The other hose was put into the main intake ducting as per the MSD directions.

 

[So Bay Vetter]

Hope this helps -

View attachment 17588
Image from 96 FSM


View attachment 17589
Fresh air vac line in intake duct

View attachment 17590
Vac line to manifold

View attachment 17591
Manifold connect point



On mine, the vent lines go between the water pump and the block. It's much easier if you put the lines in place before installing the water pump.

 

[belfiglioval]

GREAT !!

thank you !! the links that you sent me are exactly what i needed.

Hope this helps -

View attachment 17588
Image from 96 FSM


View attachment 17589
Fresh air vac line in intake duct

View attachment 17590
Vac line to manifold

View attachment 17591
Manifold connect point



On mine, the vent lines go between the water pump and the block. It's much easier if you put the lines in place before installing the water pump.

 

[So Bay Vetter]

Glad to help! I think you've got the right idea on the upgrade. Changing the opti is a big "0" on the fun meter. Here's to praying that we all have to do it only once! (yea . . . like that's gonna happen!)