CFI to CARB-Advantages, Disadvantages

[gadget73]

not really since its still a Chryco product. I'd just love to see a 50s Chevy with a 383 that was not built out of SBC parts under the hood.

[85crownHPP]

Vacuum line on the front of the parking brake or brake brake? The line leading to the can that's on the parking brake is the parking brake release, but the line coming off the brake pedal is for your cruise control.

That sounds like the switch itself is leaking for the cruise control. Real easy to swap out.

Whats this?? there's no vacuum switch or vacuum anything for cruise control around the brake pedal... on boxes anyway... or any panther afaik, 'less I missed something on aeros+ Ive been in.

[johnunit]

not really since its still a Chryco product. I'd just love to see a 50s Chevy with a 383 that was not built out of SBC parts under the hood.

I've been tossing around the idea of getting some oddball sized stroker just to confuse people and get arguments going at carshows by creating and unheard-of engine size for a given block.

For instance, stroke the 351W out to a 3.85 stroke (a common 393W if you bore it out to 4.030) but then bore it to 4.060 and brag about your "399W"

[1987cp]

ive got a fabrication buddy, and i can go pick up a 350 shortblock for 150 bucks. but thats too much work for me between work 6 out of seven and school 5 out of seven.

Guess I wasn't clear. The guy I talked to said you don't need fabrication skills to bolt in your SBC, just a drill bit. In fact, he reported running Chevy spindles on the front and a Chevy 12-bolt/four-link out back on Panthers with little trouble. Don't remember what he said about tranny crossmembers, though.

[gadget73]

Whats this?? there's no vacuum switch or vacuum anything for cruise control around the brake pedal... on boxes anyway... or any panther afaik, 'less I missed something on aeros+ Ive been in.

there is a vacuum dump valve mounted to the top of the brake pedal assembly that serves as a secondary release for the cruise control. Only time that would have vacuum on it is when the cruise control is activated though.

[gadget73]

Whats this?? there's no vacuum switch or vacuum anything for cruise control around the brake pedal... on boxes anyway... or any panther afaik, 'less I missed something on aeros+ Ive been in.

there is a vacuum dump valve mounted to the top of the brake pedal assembly that serves as a secondary release for the cruise control. Only time that would have vacuum on it is when the cruise control is activated though.

[85crownHPP]

whaaat?? it must be way up there... I don't remember seeing one when I wired in my 3rd brake light. *inserts foot in mouth*

[Merc302]

Guess I wasn't clear. The guy I talked to said you don't need fabrication skills to bolt in your SBC, just a drill bit. In fact, he reported running Chevy spindles on the front and a Chevy 12-bolt/four-link out back on Panthers with little trouble. Don't remember what he said about tranny crossmembers, though.

oh wow, i will be looking into this. im going to buy an 88 GM this weekend its in good shape and i think i can get it for four hundred

[1987cp]

whaaat?? it must be way up there... I don't remember seeing one when I wired in my 3rd brake light. *inserts foot in mouth*

And I had been quite certain the cruise-cancel thingy (on cruise-equipped cars, which of course my two current LTDs aren't) just tapped off of the brake light wiring and did its thing electronically.

[91waggin]

There are two deactivation switches for the cruise control. It's hooked up to both the brake lights and has the vacuum dump. The cruise goes into standby mode when you tap the brake pedal (from the brake lights), but has a mechanical vacuum dump in case something goes to hell.

[gadget73]

Interestingly, the later cars don't have the vacuum dump. They have a pressure switch in the master cylinder to break power to the cruise circuit as a secondary failsafe. The vac valve is sort of nice though. If you ever blow the fuse for the brake lights for whatever reason, the cruise will not deactivate when you tap the brakes. It will purge if you push down on the pedal a bit tho. Mildly scary when the cruise stays engaged when you don't expect it to. BTDT.

[91waggin]

Later being what? I'm pretty damn sure my 91 has the vacuum dump on the pedal, because I've been under there several times when I had to replace the brake light switch.

[1987cp]

:lol: '91 being the last year ever of "proper" Panthers .... I'd say that's pretty "later".


The only thing I'm really certain of is that I don't recall seeing any vacuum thingies going to the service-brake pedal on either my '79 wagon with cruise control or my '87 wagon that originally came with cruise control.

[1990LTD]

Later being what? I'm pretty damn sure my 91 has the vacuum dump on the pedal, because I've been under there several times when I had to replace the brake light switch.

I think he meant aero, mine doesn't have the vac half-moon thing

[gadget73]

its not the half moon thing. thats for something else.

90s Towncars don't have it at least. I think the aero Vic and GMQ also do not have it, at least by 95 or so. Its whenever they added that extra switch to the master cylinder that was the subject of a recall about a year ago. ots of mid-late 90s cars were affected.