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Winter projects?
Too Fast:
Took my gas tank out of the 68 LeMans a few weeks ago to install a low pressure pump. Nice to hear it come on and prime my carb after the car sits for a few weeks. Watching my wide band 02s on the LeMans, debating changes. I have been adjusting the APT and I am pretty happy now, but weird bc primary acceleration is about 1 AF leaner than accelerating. Think, cruising is near 14:1, primary accel is about 15 or 16:1. When the secondaries come on, still over 15:1. I'll get it fixed tho.
Helping a friend with his 400 for his 67 LeMans
Enjoying driving in/with my wife in her new Shaker M6 Challenger (not a snow weather car, lol).
Researching heads/cam for my 2000 WS6.
old cars:
"When the secondaries come on, still over 15:1. I'll get it fixed tho."
Is that secondary acceleration or WOT?
Too Fast:
WOT. I am working on that. The secondary air flap used to open way too quickly, huge bog and AFR went to 18:1 and would work its way richer slowly. Now the bog is almost gone since the vacuum line is almost completely plugged to the pulloff, greatly delaying/slowing the opening. Last time I checked the air flap spring is about 1.25 turns tight, and not broken. The engine is a .030 over 400 Pontiac, Kauffman 74cc D-port, with 4-tube headers, Pypes X-pipe exhaust, 3.55 diff and 200R4.
The only way I can get it richer than that at WOT is with removing a secondary metering rod. I know, I know, I should never do that but I had to try it. I bought a 1968 iron intake a couple months ago I haven't installed yet. Cliff said it is a good intake. But I don't think that will make much difference on my AF ratio, just a better overall intake than the Performer I did have, or the Offenhauser 360 that is currently on it. Primary accel is strong; no bog, flat spots or hesitation.
Cliff Ruggles:
What is the carburetor part number that you are using?
I make adjustable choke pull-offs, and also custom "timed" pull-offs for seamless transition to WOT without having to wind the spring too tight because the pull-off doesn't have enough restriction in it.......
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