Crank Pulley Color

[sprchvy]

Can anyone enlighten me on the correct color for a 69 BB crank pulley? Some publications say semi or gloss black. Some say BB crank pulley should be natural. I have never noticed an unpainted BB crank pulley. Can anyone help?

[CamarosRus]

Reference material I have quote Roger Gibson, Jerry McNeish and the U.S Camaro Club's (R.I.P.) Frank Serafine as all saying Semi-Gloss. McNeish calls for 60% gloss......

[T Billigen]

I think some were phosphated also? /ubbthreads/images/graemlins/dunno.gif

[Mr70]

Ed
This was always a controversy in the NCOA too.
When Brian Caudell restored my friends LS6,and he took it to be Diamond Certified in 94,the Judges said No phosphated pulleys.As Brian had done to his pulleys.
Later,someone very well in the NCOA,recanted this,and allowed it.
Later,they retracted it again.
It seems the Majority of the DG Pulleys were painted 60% black,but I would think some were releaased Phosphated.
Just my .02

[yountto]

Sprchvy, I dont know if this is any help,but ive had 3 or 4 NOS 291AB crank pulleys in the past ,and they were ALL phosphate. I have never seen an NOS 291AB that was painted black. I also assume you mean the deep groove version and not the 290ad.

[Keith Tedford]

The only pulley on our '69 that was phosphated was the one on the AIR pump. The rest had a semi gloss paint. This was a late July car. Perhaps the over the counter parts were phosphated.

[yountto]

The funny thing is all the 458da nos pulleys ive had were always black[whether they were stamped with the part# or ink stamped],go figure..

[Mr70]

I have two Over the counter NOS DG Water Pump Pullies #5647AP,that are Painted 60% black.

[yountto]

What does a 647ap have to do with the question regarding 1969 ...647ap is a replacement pulley, and a sometimes accepted pulley for 1970 only.

[T Billigen]

Chevy started phosphating pulleys in 1965. I have seen them both ways. Tinnell phosphated the pulley on my Yenko. It was the original pulley that came on the car and still had the phosphating on it. /ubbthreads/images/graemlins/scholar.gif

[Mr70]

Try and keep up Chuck.

[MYSTERYCHEVELLE]

In the FWIW category...Gray Phosphate on my 66 SS Crank pulley, silver cadmium bolts. /ubbthreads/images/graemlins/scholar.gif

[JoeC]

I have an original deep groove BB pulley that looks like it was dipped in black paint.

[JoeG]

DITTO JoeC----

[sprchvy]

Wow...sounds like a real controversy. I will take the easy way out and go with the 60/80% gloss. Thanks guys.

[T Billigen]

No real controversy, check MacNeish's ( THE DEFINITIVE 1969 CAMARO Z/28-SS396 FACT BOOK) He says both ways are correct! /ubbthreads/images/graemlins/beers.gif /ubbthreads/images/graemlins/flag.gif

[bkhpah]

On the early production 1969 cars I have seen phoshate pullys. Later in the year more black. Just my observations. You can usually find evidence on the back side of a pully. Most hack job restorations attempts never even remove such items...BKH

[T Billigen]

I think you are correct about early cars. I think it may have been cheaper to paint or they found a different supplier later in the year. That is were Tinnell found the phosphating (backside) /ubbthreads/images/graemlins/flag.gif

[CamarosRus]

I personally love this kind of thread...there is not enough accurate exchange of resto info IMHO. I have bought MANGANESE Phosphating chemical (what most would call "Black") to restore my fasteners, shift linkage and other misc brackets. I have also bought ZINC Phosphating material (Grayish more so than Black) to refinish my hood hinges, hood catch, etc..... I have not seen a Phosphated factory crank pulley, but have seen a 458DA Deep Groove smog pulley with Zinc Phosphating. Was the Phosphating on crank pulley the same GRAY as Smog Pulley????? And will ANYBODY be more specific on WHAT (Brand/Name color) they use to replicate 60% semi gloss Thanks, Chuck S / Seattle