C2 BB radiator identification help

[Dereck S.]

Recently came across an original BB radiator for sale claimed to be off a 67 4-speed car. How does one identify a 66 from a 67 from a 68 from a 69 BB radiator? I was under the impression that a 67 and 68 were the same and that a 66 was different. What features should I look for to identify this radiator?
Dereck

[Tom H.]

Re: C2 BB radiator identification help

67 BB 4 speed radiator was part # 3008567 Except L88 Radiator should have a date code too if it is a production unit.

[Steven S.]

Re: C2 BB radiator identification help

'65 BB had the different rad, 66 and 67 BB I believe were the same, I have no idea on the C3's.

Steve

[Rich P.]

Re: C2 BB radiator identification help

Dereck,

BB 69 radiators are wider with no cap only a tube for the coolant tank. 350 hp cars had a cap but the upper and lower hose mounts are curved and not right angle joints. Also MK should be the tag on 67's . Top and bottom rails covering the finns will have 4 1/4" holes as well as a square--rectangle cut out on either side and notches/indents at the center.

Rich

[Joe L.]

Re: C2 BB radiator identification help

Recently came across an original BB radiator for sale claimed to be off a 67 4-speed car. How does one identify a 66 from a 67 from a 68 from a 69 BB radiator? I was under the impression that a 67 and 68 were the same and that a 66 was different. What features should I look for to identify this radiator?
Dereck

Dereck-----



The 1966-68 big block (except L-88) radiators were the same. GM #3008567 was used for manual trans applications (i.e. no integral oil cooler) and GM #3008566 was used for auto trans applications. There may have been nuance differences over the years due to manufacturing variations, but the radiators were all of the same part numbers over the 66-68 period.

[Dereck S.]

Re: C2 BB radiator identification help

Thanks to all for the help.
Dereck

[Dereck S.]

Re: C2 BB radiator identification help

All,
Please review the attached pics and indicate if this is a 67 BB radiator. It has an "MK" tag attached. However, there are no 1/4" holes adjacent to the square and rectangular holes on top. The overflow fitting appears longer than I've seen on other NCRS cars. Let me know what you think. Would it be worth recoring, etc for a restoration project? Tough to pay $700-800 for a DeWitt.
thanks,
Dereck

[John H.]

Re: C2 BB radiator identification help

Dereck -

Looks like a '66 BB radiator to me; 67's had a pair of round holes on each side of the top rail.

[Rich P.]

Re: C2 BB radiator identification help

Dereck,

Your golden!! The overflow hose does nort have a clamp and the 2 strap retainers are the wrong ones those are fenderskirt straps, the originals are thinner.
If it needs a recore it will run you 450--500. And if the do recore it have them use the top and bottom rails. You just have to drill the 1/4" holes, it has the cut outs and indents in the center. But hopefully you don't need a recore just a flushing and pressure testing.

Rich

[John D.]

Re: C2 BB radiator identification help

Dereck -

Looks like a '66 BB radiator to me; 67's had a pair of round holes on each side of the top rail.

john,

Why were the holes added for 67 production ?

thanks

john

[John H.]

Re: C2 BB radiator identification help

john,

Why were the holes added for 67 production ?

thanks

john

John -

I don't know - must have had something to do with Harrison's manufacturing process for the rail; possibly for pins to locate the rail in a pierce die for the square and rectangular holes.

[Dereck S.]

Re: C2 BB radiator identification help

I did some visual checking over the net. There is a 66 Duntov car on eBay for sale and it has no round holes. However, there is a very early NCRS 67 Silver pearl on vintagecorvettes.com (Gregg Wyett) with no holes. I believe the VIN is in the first 300 cars. My car is VIN 13xx. I would believe that even if it was a 66 radiator it would be possible for a no hole left over 66 to get on my car originally? I can pick up the radiator for $200. It feels like a pretty good deal. My hope is a flush, pressure test, paint and I'm good to go.
thoughts?
Dereck

[Rich P.]

Re: C2 BB radiator identification help

Dereck,

200 bucks??? If you don't take it give me his # and I'll take it. That is a very fair price.

Rich

[Steven S.]

Re: C2 BB radiator identification help

Dereck,

Your golden!! The overflow hose does nort have a clamp and the 2 strap retainers are the wrong ones those are fenderskirt straps, the originals are thinner.
If it needs a recore it will run you 450--500. And if the do recore it have them use the top and bottom rails. You just have to drill the 1/4" holes, it has the cut outs and indents in the center. But hopefully you don't need a recore just a flushing and pressure testing.

Rich

That appears to have the very same type clamp on the overflow hose that was found on my car, complete with the way too long screw. So no clamp on '66 either huh? I wasn't aware of that.

Steve

[Rich P.]

Re: C2 BB radiator identification help

Sreve,

I don't have my 66 AIM here in the shop just my 67. And in UPC L-36 sheet A-5 there is no clamp.

Rich