Solved my Demon carb problem
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From: NorCal
Solved my Demon carb problem
Solved my Demonic problem by putting on a Holley 3367 from a '66 327/350 on my '67 with the same engine. Runs like a top. The 3367 is the same as the 3810 that came on all small block 67s, but has externally adjustable floats, so it more serviceable. They got rid of the externally adjustable floats in 67 for smog reasons, so people like us would not mess around with the floats and make LA smoggier. We all put on the older float bowls anyhow way back then.
This is (probably) the LAST TIME I dork around with third-party aftermarket parts. Unless I "have to" such as swapping points for an electronic module. Getting non-stock stuff to (eventually) work right is just not worth the time to me any more. I'd rather drive my roadster than work on it.
This is (probably) the LAST TIME I dork around with third-party aftermarket parts. Unless I "have to" such as swapping points for an electronic module. Getting non-stock stuff to (eventually) work right is just not worth the time to me any more. I'd rather drive my roadster than work on it.
Race Director
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From: Plum Boro, Pa. USA Pennsylvania
Re: Solved my Demon carb problem (LouieM)
This is (probably) the LAST TIME I dork around with third-party aftermarket parts. Unless I "have to" such as swapping points for an electronic module. Getting non-stock stuff to (eventually) work right is just not worth the time to me any more. I'd rather drive my roadster than work on it.
True 'dat! :thumbs: :thumbs: :thumbs: :thumbs: :thumbs:
:steering: Cruz :steering:
Thread Starter
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From: NorCal
Re: Solved my Demon carb problem (Plasticman)
Yea, just love when the aftermarket guys use the phrase "Bolt on Replacement". You just know better!
Plasticman
Plasticman
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From: New York, NY 10154
Re: Solved my Demon carb problem (LouieM)
Had a similar experience with aftermarker carb and went back to stock........the only thing different I did was go for a 67 internal float adj carb...........I am going to live with it but if I did it again I would take the external float carb anyday.
:cheers:
:cheers:
Thread Starter
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From: NorCal
Re: Solved my Demon carb problem (Daren Schneider)
Yup. I figure Zora and Chevy Engineering knew better than today's aftermarket companies how to match parts using the technology of that era. Good enough for Duntov, good enough for me. :chevy
Safety Car
Joined: Nov 2001
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From: northern CA
Re: Solved my Demon carb problem (LouieM)
Good to hear things are back on track. So they took back the Demon .. ? .. No doubt the aftermarket continues to hold sway when it comes to purchasing replacement parts. Some players have been around a long time. Isky .. Crower .. Crane .. Wiend .. et al .. and are still in the game. Not sure about Isky now, though. I always figured the aftermarket had a "leg up" on the factory offerings which seemed "outdated", by comparison. Aftermarket advertising seemed to speak for itself when it came to performance parts, and still does. I don't ever remember the factory advertising their wares, per se, with the exception now of the "GM Performance Parts" catalog. No doubt all those hours the factory spent on R&D had to have counted for something but who much thinks about that kind of thing .. ? ..
Team Owner
Joined: Oct 2000
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From: Washington Michigan
Re: Solved my Demon carb problem (mrg)
Thousands of man-hours were spent by the Chevrolet engineers developing high-performance parts as "systems" for production SHP engines, which also had to stay in one piece and be reliable to minimize warranty issues. Solid-lifter cams are a good example - factory solid-lifter cams used the same pushrods, rockers, and valve springs as the grocery-getter passenger car engines, and ran forever while making good power. Browse around on the forums that focus on "mods" and note all the posts with people looking for solutions to wiped cam lobes, torn-up lifters, bent pushrods, broken roller rockers, broken/binding valve springs, etc. Just because stuff is aftermarket doesn't mean it's "better". There's no "free lunch" - mix-and-match aftermarket parts are seldom as reliable as the "systems" developed by the factory engineers. Racers who rebuild their engines frequently don't care, but for a reliable driver, it's hard to beat "factory" performance parts that were developed for production as a "system". :thumbs:
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Thread Starter
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From: NorCal
Re: Solved my Demon carb problem (JohnZ)
mrg - On the 25th I'm driving my 67 to a Vette-only garage so the local Demon rep can pop my Demon Jr. on my car and see for himself that it runs like crud, if it even runs. After that I expect a full refund--we'll see.
John - The systems approach is the only one that works, on car engines or any other complex mechanical device. I forgot this in my zeal to own a piece of "modern" technology to make my driver even better. Now that I have a Holley back on the car I feel even better than anticipated, because I've rebuilt 4150/4160 carbs dozens of times and understand how they should look and operate, so I can take it apart and fix it on a long trip if necessary. Now I'm gonna buy a rebuild kit and throw it in the car, along with a water pump and fuel pump, for that secure feeling on long trips. Thanks for pointing out all the wailing about broken aftermarket parts on other forums. I got suckered in this time, but not likely in the future unless there is some undeniable gain but no extra worry.
John - The systems approach is the only one that works, on car engines or any other complex mechanical device. I forgot this in my zeal to own a piece of "modern" technology to make my driver even better. Now that I have a Holley back on the car I feel even better than anticipated, because I've rebuilt 4150/4160 carbs dozens of times and understand how they should look and operate, so I can take it apart and fix it on a long trip if necessary. Now I'm gonna buy a rebuild kit and throw it in the car, along with a water pump and fuel pump, for that secure feeling on long trips. Thanks for pointing out all the wailing about broken aftermarket parts on other forums. I got suckered in this time, but not likely in the future unless there is some undeniable gain but no extra worry.
