J.Ukrop submitted a new blog post: Five Carbs, Six Cylinders (Again!) Continue reading the Original Blog Post
I like the 5-carb McGurks because you have the option to run any combination of carbs you want (1,2,3 or 5)! Just plug off whatever doesn't have a carb over it!
Now this looks like it will be a fun thread.I`ll saddle up and go along for the ride. Good luck.Have fun.Be safe. Leo
I ran a five carb McGurk intake on my 322 GMC engine for a few years. Drove to the 100 car pile up in northern Illinois for two years with the set up. Blocked off two of the carbs and the engine would hardly run, so we ran all five and it ran great!! After a couple years i gave in to fuel injection (Throttle body from 91 chevy trucl) and ran that for a couple years. Painted the throttle body eastwood gold and hid the hoses with black shrink tube and no one ever notice it was injected. Couple years at the 100 car show as well. Traded the A for a custom 53 Olds lowrider and then trade the Olds back to another owner of the A . The custom low riders aint me!! That owner had changed the fuel system out for a holley 650 and thats what i have driven for the last couple years. Runs good for sure... The five carb was cool but maintance . ie leaks and adjustments wore me out.... Glad to have my car back I built it in 2006 from a sedan body, 32 frame and quick change . GMC 322 (302 bored 125) and have ran a saginaw four speed all these years.. Nicson cast iron headers add a sound like no other...
Joey- I just want you to know I always look forward to your writing on the TJJ- I can usually tell by the photo which one you authored. You're looking at and writing about the right stuff... Thank you for contributing to this place! Tuck-
I used to vintage race with a guy who had a couple of 320 Roadmaster-powered track roadsters. IIRC, he ran 5 carbs on one on 'em. (Not as good as 5 for 6, but still pretty neat.) I had 4 97's in a row on my dirt modified for a few years, and had to rebuild them every spring. That was enough for me.
Seattle area guy, with a black 37-39 Chevrolet Coupe, runs a GMC six with 5 carbs. I have to look at the car every time I see it, wherever I see it. He gets around, so the 5 carbs must not be an issue. I am Butch/56sedandelivery.
Imagine a rip down the track followed by a cruise down a meandering scenic highway...fun times...Like the fly swatter head rest it no doubt saw plenty of use...Great story and Hotrod @J.Ukrop
Kind of OT, but in the Midwest in the 60s and 70s the ford 300 I6 and Chevy 292 I6s used 5 rochesters on fabbed manifolds in super modified roundy rounds.
This is a subject that gets my attention, and I can see some of my pals have already responded, so... ...how about five carbs hanging on the garage wall? I forget who gave me the manifold because he thought it was useless. Stan Back (Jim Kitchen) gave me the alky carbs 40+ yrs. ago. My current plan is to put it on the spare 302 GMC sitting in the corner, along with an Enmark-built Saginaw 4-spd., and set it back 25 % in a Mazmanian-style candy red '55 Chevy with a chrome water-pipe rear bumper and pie crusts on polished Halibrands protruding from Nomad-radiused rear wheelwells. To drive on the street, of course. But I admit this is one project I may not get to. The Spaldings quickly found that three BXOV2s worked much better than 6 on their little 248-in. Chev 12-port, so that's what's on the repro Marty Strode and I are finally close to finishing. Sweet Six Dreams, Pat Ganahl
The intake is still available from Patricks new for 299 not bad price .....For the GMC http://www.patricksantiquecars.com/chevy-gmc-auto-parts.html#chevy15
Very nice 5-carb setup you have there, pgan! I am going another route with my 292 inline 6 but the 5-carb should work really well on your engine. Try running #1, #3 and #5 (the carbs that line up with the 3 intake ports) on straight linkage and start bringing #2 and # 4 carbs in at 5/8 throttle on progressive linkage. That should work well with your 5-carb layout. Stromberg 97s flow around 155 cfm each (2bbl flow rating), so 3 of them would have 290.6 cfm at 5/8 throttle opening (or 465 cfm at WOT). And all 5 carbs at WOT would flow 775 cfm. That's at 2bbl flow rating. Divide by 1.414 for 4bbl flow rating and you have 548 cfm with all 5 carbs at WOT. Not overcarburreted at all. If they were alky carbs, they will have huge jets. Just rejet them for what passes for pump gas now of days (needle valve, main jets and powervalve) and she should run great! http://www.stromberg-97.com/tech_center/pdfs/stromberg-what-jet-size.pdf Good luck with your engine. Will follow with interest. Happy Motoring, Harry
I had owned one for a short while. I never realized how big they actually were... totally taken aback by their size! There are so many cool competition built cars with one of these in it. Here's an old timey shirt I did ten years ago- Still have some if anyone wants one just PM me. This was the first poster I printed by hand- turned out rad. This is some old art too... 13 years ago already, I think all the old copies I had of this burned in my shop fire. Sure was fun learning how to print paper on a vacuum table. The actual printed posters looked way cool- they were huge.
"Thingie" taken at Saugus. At left is Tom McLaughlin and designer Bob Rounthwaite on the right. Credit: Don Montgomery.
The 23 t-bucket with the five carbs was my father's. He originally used the setup in a 50 Chevy, then a 33 Plymouth coupe. He cut the roof off the coupe and made it a C/SR. The motor went into the t-bucket in 1965. In 1966 the motor was changed to a 292 with dual quads. During 1966 season he held the NHRA record a few times. The intake and headers made by my grandfather still exist and are used in a recreation of the t-bucket. My father also still exists and will be 81 in a few weeks. He still races the car now with a single Holley.
I thought everyone was getting screwed by Patricks. Parts not shipped, money kept etc. See link below. https://www.jalopyjournal.com/forum/threads/buyer-beware.1084473/#post-12291811
I put a 302 jimmy 6 in my '40 chev pu. I was going to run a 5 carb manifold but decided against it for tuning reasons. Instead I put a 6/71 blower and dual 4's on it. Looks amazing, but ran warm all the time. I never got the bugs worked out of it, still have it though. Marriage, kids, house has put it on the back burner. Haven't driven it in 13 years. Maybe this year........