PV experts, step in

[Dick W.]

Re: PV "experts"

. if you make it to Charolette, i promise you a ride in a "bone stock" 250 HP FI that will get yer attention.. regards,mike

Iffen that thing is "bone stock", it wiould be the firstest one from the Maryland Mucous stable. Stock like the Diabolical Dipstick Dennis's 62 with giggle gas on it.

[Keith B.]

Re: PV experts, step in

What cars and what years was the 257 used in? If I go to a junk yard I want to know which ones to crawl around in.

Thanks!

Steve

66-67 Chevelles with the gauge package had the brake warning light. but good luck finding one of those. I am sure all the 68-72 Chevelles had that light too.

[Jack H.]

Re: PV "experts"

What you're hearing is what I said.

(1) I have a number of factory original #257 lamps (both GE and Westinghouse) gathered from Chevy passenger cars from the '63-67 era.

(2) I bench tested them using an automotive power supply (13.8 VDC regulated output) to get a feel for warm-up time and blink rate.

(3) The numbers I mentioned were what I found.

(4) Unless you have a new breakthrough observation in physics, I don't recall electrons exhibiting an 'aging' effect with their speed of light characteristics slowing over time...

Why do this exercise? To get a feel for what's correct/original vs. what folks have reported regarding the 'incorrect' performance profile of the 'inferior' Made In China lamps on the market today...

[Jack H.]

Re: PV experts, step in

There's no firm fast rule on where you'll find the lamps. I used Fred Oliva's Corvette PN cross reference utility to search the '63-67 passenger car AIM books using the GM PN for the #257 blinker lamp. I got LOTS of hits including full size Chevy, Chevy II, Camaro, and Chevelle. Fred's utility does NOT include Corvair or truck AIM info...

Then, over the course of a summer, I made a point of checking the instrument cluster wiring harness assy's of the cars I 'visited'. Results: not ALL of the candidate models were #257 equipped; as if the use of the lamp varied, by year/model with the donor car's actual factory option configuration.

BUT, those that DID have #257 lamps provided used originals from the era with virtually NO use/wear. This makes sense as the lamp was used in an e-brake applied warning feature. As we know, few people actually use/apply the e-brakes on their cars...