71 heater control vacuum hoses

[Terry M.]

Re: 71 heater control vacuum hoses

A) If the wiper door vacuum relay is by the master cylinder (1970 and some 1971) the T will be as shown in my photo. In this case I believe BB & SB are the same.

B) If the wiper door vacuum relay is in the fender well (1968, 1969, some 1971 and all 1972), I believe BB and SB will have this T at different locations as mentioned above.

Vince, I assUme you don't have any of the original vacuum hoses to use as a clue as to where the T was located originally.

Don’t you just love vacuum systems? They suck.

[Vincent F.]

Re: 71 heater control vacuum hoses

needed that laugh, my early 71 has it in the fender. tour my garage apart and found the original hose with the T still in it. Its right where Kens pic shows it. problem solved, thanks to all.
I have no hair left

[Terry M.]

Re: 71 heater control vacuum hoses

Back when we were doing research for the 1993 version of the 1970-72 TIM&JG I was visiting a friend who owned an LS6 Corvette (13K s/n range) it had/has the windshield wiper vacuum relay valve at the master cylinder (see Dobbins' Vette Vues Fact Book 1968-1972

[Vincent F.]

Re: 71 heater control vacuum hoses

mine is s/n # 1356 71 LT1 convert. relay in the fender area.

[Kenneth T.]

Re: 71 heater control vacuum hoses

As a follow up, my car is the last day of production #21715.

The chrome valve covers are not correct