67' Tri-power

[William O.]

Question:

When judging, what is the varibles for the dated carbs, center verses front and rear, does the front and rear need to match? or all three with the same date?

[Steve B.]

Re: 67' Tri-power

William, I have owned a few 67 tri power cars with the original carbs and if memory serves the front and rear carbs were dated the same with the center carb dated a couple of weeks to a month apart form the other two. Hope this helps.

[Mike M.]

Re: 67' Tri-power

agree with steve although all three can be same week and all three can be three different weeks. in general though, steve's got it. mike

[William O.]

Re: 67' Tri-power

Thanks,... this helps, I have matching carbs on the f/b but my center carb is a 6 weeks apart.

[Tom D.]

Re: 67' Tri-power - Manif. Reproductions now?

Are reproduction manifolds avail? I'm looking at Crane Corvette entries on e-bay, and the description isn't quite clear to me.

Tom Dingman

[Bryan L.]

Re: 67' Tri-power - Manif. Reproductions now?

I saw the repros at Orlando. They look pretty nice, show price was $2850. I think the vendor was Kaufmann. I had a brochure but don't know where I put it.

BL

[William O.]

Re: 67' Tri-power - Manif. Reproductions now?

I think reproduction are avalible, but not the carbs...check the drive line, hopefully some one will post the infomation.

[Joe R.]

Re: 67' Tri-power

Hi William:

Your question started out with the words, "When judging..."

I believe that the NCRS judging guidelines allow the standard "6 month rule" for evaluating carb dates as well as other dated components. This would mean that each one of the carbs could be dated up to six months before the engine was assembled, with no requirement for the relationship between the dates on different carbs.

While you might want to have closer dates that are more typical of production, I believe that under NCRS judging guidelines you must be awarded full credit for dates that fall within the 6 month window.

[Mike G.]

Re: 67' Tri-power

The repro tri-power intakes are being made by Coffman Corvette in Mansfield Oh. The phone number is 888-774-0220 or 419-522-0463. Web site is coffmancorvettes.com....Mike

[William O.]

Re: 67' Tri-power

Thank you Joe, for some reason I thought the dateds had to match within weeks but you are correct about the six month, but how do the judges look at it?

Regards,

Bill

[John H.]

Re: 67' Tri-power

Joe -

The six-month window tracks back from the car's final assembly date, not the engine assembly date (carbs were installed at St. Louis).

[John H.]

Re: 67' Tri-power

Bill -

Judges look at it based on the rules, which allow up to a six month "window" for full credit, although 2-6 weeks is "typical"; either situation gets you full credit for the dates.

[William O.]

Re: 67' Tri-power

Thank you for the post, I did know about the six months dating on engine parts but I did not know they included the carb's.

Best regards,

Bill

[Joe R.]

Re: 67' Tri-power

Hi John:

Thanks for the clarification. I actually considered this distinction when composing my posting, but I was unsure where the carbs were installed. I figured that someone else would correct me if I had it wrong.

I thought I remembered that the engines were test fired at the engine plant, which implied that the carbs were installed there. Did the engine get fired for the first time at St. Louis, or did the engine plant mount some carbs temporarily for a test there? I suppose that only the center carb would be required for a test start.

[William O.]

Re: 67' Tri-power

can you start or test any tri-power with the front and rear car not installed?