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Summit Carburetor Swap for the Y Block 292 V8 SUM-M08500VS 1955 Ford

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This is Part 1 of a two part series concerning the swap of a Holley 1850 four barrel carburetor for a brand new Summit M2008 series carb. This 500 cfm vacuum secondary carburetor is the SUM-M08500VS version. The engine is a 292 Ford Y Block V8, bored .060 over, and carrying mostly standard internals. I did have to wire an electric choke, but using a relay and the ignition wiring as a trigger this seemed to go quite well.
If you run a 239, 256, 272, 292, or even a 312 Ford or Mercury engine then this carburetor should most assuredly be a good fit for your cubic inch size. Keep in mind that the bolt pattern on your intake manifold is extremely important. Earlier Y blocks with the 4 barrel intake were a smaller, square bolt pattern - you will need an adapter for this carburetor if so.

Опубликовано:

23 авг 2024

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Комментарии : 31

@peter455sd 4 месяца назад

Best square bore carb ever,this is the one carb specialists put in their cars

@HotRodReverend 4 месяца назад

Agreed my friend, I am very happy with it! Will probably go with the 600 cfm size on my next build.

@waynehaines3302 Год назад

Great video, Dano & merry Christmas to you and family.

@HotRodReverend Год назад

thanks Wayne!

@bkrefting5225 Год назад

Something to think about. I see you have your throttle return spring opposite your pull linkage on the butterfly shaft. This may be stock correct, and it is not wrong, but it can wear out your butterfly shaft bushing early. This will become a vacuum leak, and can become a mechanical failure also, and the premature end of your carb. To take the stress off of the shaft and bushings, have the throttle return springs pull from the front of the engine, from the same side of the bell crank/ link flange. Then the throttle will return, but it's only pulling against the linkage and not across the shaft and the shaft bushings are unloaded. Over time this does make a difference.

@OlysGarage Год назад

Been wanting to try out one of those Summit carbs back when Holley originally designed them. Seems like it would bridge both worlds of what's great about Holleys and the Autolite 4100. Curious to see how it works out for you.

@MattsRageFitGarage Год назад

Just ordered one tonight for my 64 galaxie with a warmed over stock 390. I had the 600 cfm version of this carb on it that belonged to my truck and now a 600 cfm Holley I have tuned well but it sucks so much gas with the Holley I decided to try one of these out since they went on sale today. I've had the 600 variant on my truck for 10 years now and it's been fantastic. I hope the 500 version gets better MPG than the 600 Holley I have. I also like the car. My dad had a 56 2 door club sedan he built a 57 spec 312 for and put a toploader 4 speed in out of a 66 galaxie and a 9" rear out of a 57 Ford and he drove it daily all throughout the 70's and 80's.

@HotRodReverend Год назад

sounds great - let us know how it tunes!

@MattsRageFitGarage Год назад

@@HotRodReverend I got that 500 cfm summit carb tuned pretty well today. I had to go up to a 65 primary jet, opened the IFR jets up to .047-.048 somewhere in there and increased the accelerator pump squirters to 35. Mine had 31 squirters in it and also put the acc pump cam on number 1 position and man so far it runs really nicely and I didn't really notice a loss of high end power or loss of ho fast the engine revs through the RPM range. Seems like a winner so far. I do think it picked up some torque below 2000 rpm. Power valve circuit and secondary circuit seemed just fine how it came.

@danontherun5685 Год назад

@@MattsRageFitGarage I figure FEs (durable tuggers) normally get 8mpg pulling a battleship uphill or coasting down hill with engine off. I have a GT 390 T85 OD 3:70, long tube headers in my 59 bird averages 8mpg city/22mpg freeway. Built for 87 oct cause its what I drive the most. I also run a 57 F100 single 4, Ebird currently w/257/carters and 57 Ranch powerdyne pumped holley 600, Mummert intake, all 3 long tube headers, T85 OD, 4:11 posi. F100 12/20mpg, Ebird 6/15mpg, Ranch 8/20mpg. Ebird is most fun, Ranch fastest by far, 59 comfy super cruiser, F100 easiest to get in/out (my back always hurts) and practical. The ebird 257/carters only dyno'd 12hp more than well built E carbs. I now agree with Local Ford guru that a single carb can do same as multi carbs but gets better mileage but that Ebird can jump straight off the ground. So keep it simple and save yer bux for front disk brakes. Long tube headers best mod and I dyno tune all my builds/changes.

@MattsRageFitGarage Год назад

@@danontherun5685 Yeah, 8-10 MPG around town with E10 gas seems to be pretty normal for them no matter what displacement or what configuration they're in.

@jamestone265 Год назад

I’d like to see the stock foot feed linkage a long with the auto trans linkages mounted on the Mummert or Blue Thunder raised intake. With it higher I’m hoping the adjustments will let the work the same. Nice to see a 500 used, I don’t believe the original Autolite it copied was even that big.

@johnkrag6 Год назад

I'd highly recommend moving your throttle return spring bracket to front of engine. You won't wear out throttle shaft and bushings.

@HotRodReverend Год назад

I had it setup that way with my Edelbrock… with the new intake just wasn’t happy with the bracket and the lack of a mount at the front of the intake, but I will take a look.

@sorshiaemms5959 Год назад

Bot a 750 double pumper for my bracket car great carb but had to down the primary jets 4 sizes adjust the pump shot to run good and good it did took 3 \ 10 th s off my et great video hope the car run s good

@diecastmodelhub 11 месяцев назад

I Just bought a 64 Ford O box truck I am turning into a food truck, I may have to look into one of these to replace the factory carb

@devenemerson2732 2 месяца назад

Was the Mummert manifold worth the expense? How did it compare to a stock '57-64 four barrel manifolds? Other than just being 15lbs lighter

@HotRodReverend 2 месяца назад

Without a dyno it’s hard to say - I picked up considerable horses, more than a second at the 1/4 mile. But I also swapped for a mild cam change Isky E4. If I would have changed out my stock, 1964 F100 distributor for one with lighter advance springs, had my new leaf springs installed, etc I would be low 15’s pretty easily and scratching the surface of high 14’s with some tuning.

@danontherun5685 Год назад

Not familiar with that yellow coil, built for horizontal? I've had an Ebird for 30 years, ran real good but boring so had it built to spin 5500, long tube headers, bigger bump stick, HE pistons, compression for 91oct and replaced E carbs with edelbrock 257 with carters, no surprise 900 cfm on 322CI bogged at launch. Mr. Carberater upped the accelerator pumps, primary circuits, bigger jets, tossed choke plates and vac advance then tire dyno tuned it. T85OD, 4:11 posi, 7" rims, trac bars and added a leaf to rear springs. Yeehaw... unitl it cracked leaf spring perches and motor mounts so beefed them up heavy. Now jumps off the ground and more fun to run than my supercharged 57 Ranch same build. Blower motors do not jump off the ground, they start throwing asphalt chunks after 3500rpm. Pertronix, msd, electric fans.... and front disk brakes. Ranch gets double the mileage, Bird not deformed except 4 MSD screw holes and rear sway bar bolts. Favorite engine in light cars.

@SteveDolyniuk 6 месяцев назад

He never mentioned that the intake manifold also had to be changed. THE %% &56 Y Block engines with a four barrel carb, came with a Holly 4000 series carb & has a different bolt pattern than the 57 & later intake manifolds have.

@YouGotsTheRabies Год назад

I see you cut out the plenum divider. I first read about that trick in "How to HotRod Small-Block Chevys" published in 1987. Did you have that book too?

@HotRodReverend Год назад

I do not, but it sounds like an interesting read.

@bs741 Год назад

Love your videos. I have a 56 Mercury Monterey with a 312. I have the Mummert intake I’m about to install. I don’t have the grommet for the pcv. Do you know what I need as far as grommet and pcv for this intake? Thanks!

@HotRodReverend Год назад

You must mean the Mummert Valley Pan - the intake does not take a grommet. If you have an original valley pan, I would suggest going to my website, HotRodReverend.com/blog. There is a ton of articles and information over there all searchable by categories and titles. If you shoot me an email I can send you an article I wrote for the Y Block Magazine in PCV setup and all.

@bs741 Год назад

@@HotRodReverend 👍🏼 I’m sorry, yes the valley pan. I have both the Mummert intake and valley. Waiting on my heads. I know my ‘64 292 has a factory PCV in that valley pan location. Just looking for the best option. I’ll checkout your website also. Thanks!

@bs741 Год назад

@@HotRodReverend I tried to locate your email address on your website and wasn’t able to find it. Thanks! Needing to get this pcv figured out for this Mummert valley pan

@roughseas3455 8 месяцев назад

I have a problem with my Summit Racing carb that makes no sense to me. I have an off oil valley pan which makes it difficult to put a fuel hose on. You say the inlet is 3/8ths, but every single 3/8th NPT fitting I put on the fuel rail doesnt fit. The only one that fits is the one they gave me, which is a straight one. I dont understand how 3/8th NPT doesnt fit 3/8ths NPT.

@HotRodReverend 8 месяцев назад

Sounds like you need to get a hold of Summit

@roughseas3455 8 месяцев назад

@@HotRodReverend I already did. The only thing they said was to take the duel feed and take it in to like ACE Hardware to verify the threading.

@stevedolyniuk3358 Год назад

Where can I purchase the relay for the Electric Choke ?

@HotRodReverend Год назад

Those are all over Amazon and eBay - type “30 amp Bosch relay” in the search box and you will get a lot of hits. They are not too expensive thankfully. I am a big proponent of using them.