Anyone recognize these numbers?? I found this carb buried in my garage and can't seem to figure out why I have it. It is a vacuum secondary carb with the numbers......3418-1 and 3886091-AN. I have some holley info but have come up dry.
Thanks......Rich

#3886091 = GM part number for a "List - 3418" Holley Model #4150 4 Barrel used on 1967 L88 427/430 HP.
- Center Pivot float bowls w/Dual feed
- Metering blocks are ;
Primary = #4963
Secondary = #4965

Damn....thats was quick!! Thanks for the help.
Rich

My Holley book lists 3418 as 1966 Corvette 427 425 hp and the 3418-1 as 1966-67 Corvette 427 425 HP

My Holley book lists 3418 as 1966 Corvette 427 425 hp and the 3418-1 as 1966-67 Corvette 427 425 HP

Nope - the only Chevrolet production application for the 3418 carburetor was the '67 L88. '66 Corvette 427/425hp used a 3247, and there is no such thing as a '67 Corvette 427/425hp.; the only '67 Corvette solid-lifter 427 with a 4-barrel was the L88 (430hp). :)

just going by the official Holley book .....

830-850 cfm............. :eek:

I dug this post up to see if anyone could come up with factory jetting for this 3418 carb?? I have been using this carb on my 70 camaro most of the summer but seem to be having trouble getting the right plug color. I've been told 80 and 88 and I am now using 76 and 84 and still showing a fat condition. Any ideas???


Rich

If I were you I would ebay that damn thing it has got to be worth a fortune... only 20 L-88's made in 67.

My old Holley catalog shows this:

R3418-1AAS - 855 cfm - 1-9/16" venturis, 1-3/4" throttles
Primary jets: 22BP-40-78 on the choke lever side, 22BP-40-80 on the throttle lever side
Secondary jets: 22BP-40-80 on the throttle lever side, 22BP-40-82 on the choke lever side
Power valve - 25BP-595A-65
Renew kit - 37-404
Trick kit - 37-908

Thanks guys.......just what I was looking for. A simple starting point. I will assume they recommend the stagger jetting when using the stock intake. Sounds like it might be worth a try..........


Rich

Rich,
firstgenaddict's post is what I was thinking. The money that carb is worth would buy you a nice new, custom jetted carb plus you would have money in your pocket.
JMHO
Doug

LOL...yeah I been thinking about that all day!! I am not sure if I could sell it right now cause the damn thing runs so good. I have a friend in Jersey who owns a Corvette shop. He found me a buyer for a big block tri-power intake I had a few years ago so I am going to give him a shout first thing next week just for ****s and giggles........

I have seen original ZL1 carbs go for as much as 10,000 (crazy if you ask me) so who knows what a 67 L88 carb is worth????

Here are a couple of '69 carbs for comparison. Would these be service replacements for the '67? I know the date code is critical as far as value. I found out the hard way how much more a mid production year '69 Z carb was worth. :clonk:

http://cgi.ebay.com/ebaymotors/1969-Holley-L88-3418-Corvette-3886091-855cfm-Carburetor_W0QQcmdZViewItemQQcategoryZ36474QQihZ01 2QQitemZ220025700722QQrdZ1QQsspagenameZWDVW

http://cgi.ebay.com/ebaymotors/Holley-3418-Carburetor-855-CFM-1969-Corvette-427_W0QQcmdZViewItemQQcategoryZ46098QQihZ018QQitem Z280028919091QQrdZ1QQsspagenameZWDVW

Thanks for the help guys. Hopefully this thing will be worth something to somebody down the road.

Rich

Is there a date code on the carb?
Doug

Good question.......where do I look? There are no tags anywhere and it does not have the correct metering blocks at this time. I will see if I can post a pic.......


Rich

Good question.......where do I look? There are no tags anywhere and it does not have the correct metering blocks at this time. I will see if I can post a pic.......


Rich

The date code is stamped just below the LIST number on the front side of the choke air horn. Carb should look like the photo below if it's a production-line '67 L-88 carb (note the spring holding the choke permanently open). :thumbsup: