Re: 67 L36 Vacuum Control Cansister
I've got your presentation, Duke. I'll review it. Thanks
I've got your presentation, Duke. I'll review it. Thanks
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Re: 67 L36 Vacuum Control Cansister
Still waiting on the "B20" to get her via UPS....Monday.Comment
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Re: 67 L36 Vacuum Control Cansister
I installed the VAC canister yesterday and set the idle mixture screws. The VAC canister is a "B26" not a "B20" but apparently they are the same. I adjusted the idle mixture screws to achieve 17" of vacuum at 600 RPM. The idle mixture screws are approximately 1 turn off of seat. They were approximately 1.5 turns off of seat. The car did seem to run better with the new canister and the leaner condition. Prior to adjusting the carb I drove the car approximately 5 miles to get it good and warm. I ran out of time and put the car up after the adjustment, but will drive today for final results. I will post tonight my findings.
The vacuum canister that I removed was a "355" stamp part. Can someone tell me what that vac canister fits?
LawrenceComment
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Re: 67 L36 Vacuum Control Cansister
Lawrence,
The vacuum control with the stamped 355 specs are 15*@12" vacuum.Comment
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Re: 67 L36 Vacuum Control Cansister
B20 and B26 are the same specs within production tolerance and are essentially the same as the ...355 16, which is nominally 16 @ 12".
I believe the OE VAC on '67 L-36 is ...360 12, which is 12 @ 12". Check the AMA specs and CSM. The ...355 16 was OE on all '66-'67 300 HP engines and other applications, so don't throw it away if it works.
As previously discussed in this thread, a near exact replacement for the ...360 is not available, and the 355 is the best fit.
Your idle vacuum at 600 is higher than I expected, but I have to rely on others measurements. My understanding is more like 14-15". That means the B26 is more aggressive than necessary and a 15" B22 VAC would meet the Two-Inch Rule.
If you hear any transient detonation on upshifts or when you open the throttle to accelerate from a steady speed a B22 might eliminate the detonation. The general rule is to use the least aggressive VAC that meets the Two-Inch Rule.
DukeComment
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