Hot Rods My full race flatty 6. First fire video.

That is a very racy sounding motor. Very neat. .550 lift? I didn't know any flathead engine could get that much lift. Who did the cam?

 

holy hell that thing is going to move that sedan just fine! sounds great.

 

Hot Damn, that sounds like Death on the march!
Great job, it will settle down with tuning, but will always turn heads.
I'm so happy to see a hot rodded flatty! Double that for a Mopar!
Try tuning it up at 1500 RPM or so, then sneak it back down a bit at a time.
I sure hope the trans can function properly with that snarling beast in front.

 

I forget what the stock lift is but its pretty good. Check out number 3 intake valve. Not sure it thats the highpoint, but it opens a pretty good distance,



Guess I did forget to take the overlap specs into account but whatever the high reading is, the concept for timing is the same. Ad do make sure you do a run in at the 2000 RPM as mentioned.

 

Just checked this out. That is soooo bad-ass! Congratulations.

 

Sounds great !
nice looking machine work to ; )

 

Where did you find a mallory dual point? I have an HEI for mine, but i dont wanna run it. I would much rather run dual point. Makes more sence to me

 

yea, once i get both carbs running, it should smooth out a little bit. Its starving for air right now, and has alot left in it.

I didnt do a run-in due to lack of a cooling system. Once i get a radiator, it'll be set in stone!

 

I love the new HD videos on youtube. Nice work!! Is it too crazy to consider putting a points eliminator kit in the stock dizzy? I would imagine you could adapt one to work for your motor. Sounds crazy!! Good luck!

 

I think i got wood... : P
bitchin 6

 

sweet!!!

 

KID...your no PUNK, but one word of advice from an old engine builder. never run a new mill that long without water, unless your intent is too rebuild it the next day. but on the brite side, that old mill sounds GREAT, i never heard a 6 cylinder with that much CAM. BRAVO you did a great job GRASSHOPPER...POP.

 

the block was filled with water, just no cooling system yet.

Thanks everyone

 

RIGHT ON!!!

now build a HA/GR to stuff it in.

my "race" flathead six is nowhere near that mean sounding, but admittedly, I got "taken" by a local "race" engine builder.

post your cam card.

did you cc everything?
what is your static compression ratio?
stock valves?
factory rods?
Egge stock pistons with stock rings?

sorry if I'm asking too many questions, there is way too little information out there regarding racing these engines.

 

Really, really nice. Please post more pictures and also tell us how you handled your lubrication system.

 

sounds like a beast...

 

Sounds kinda like mine, but less smoke

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I convertrd my stock distributor to dual points. Found this item on eBay. Increased my dwell angle to 46 degrees.

 

just find you some extra jets then braise and re-drill them. can't buy em make them! the flat 6 mopar getting the long deserved respect, cool!

 

The cam is 110 degree lobe seperation, 236 degrees of duration and .550 lift. The static compression should be around 11-1. No i didnt cc anything. The valves are stock size, but it has a valve job and hardened seats. Its using the factory rods, but the pistons and rods have all been balenced. The pistons are .030 over forged aluminum flattops with moly rings.

 

WOW that is a mean sounding MOPAR.......any Idea on power HP/Torque?
Refreshing to see a flatty mopar........

 

Man that thing does sound really mean. That's nice to hear a nice strong fresh rebuild. Mine is tired. I don't know how many miles were on mine, it's from a friends 46 Dodge that now has a SBC.

How are you figuring your compression ratio? Seems like to me if you have .550 lift you'd have to cut valve reliefs out of the head and lose some of the compression you gained from milling the head.

My cam is a 400JR from Edgy. 274 advertised, 230 degrees at .050, and a total of .405 lift. With my Edmunds head(9:1 on a stock bore 230), I had about .030 clearance between valve and head. I didn't want to go any higher lift or I would have had to cut into the Edmunds.

Anyway, sounds great and I'm glad to see more of these motors used. What car is it in?

 

Post a picture of the CAM card . . . would love to see it.

I don't know a thing about this motor, but I have a hard time imagining a .550 lift on a stock cam core profile - must have a big base circle and large cam bearings. I'm in the flathead Ford world - we don't have much to work with along that line.

 

Nasty, just nasty. Hot rods need to be a little on the nasty side. Love it.

 

I don't mean this in a mean way, or to squash your hopes or anything, but I SERIOUSLY DOUBT you're anywhere near 11 to 1.

the swept volume of a .030 over 230 is 640.49 cc's

using numbers stolen from my flathead six--
pistons zero deck
fel pro .065" head gasket = 14cc's
Edgy head = 70 cc's
equals 84cc gross combustion chamber

8.62 static c.r.

the Edgy head is SUPPOSED to be 9 or 9.5 to 1

 

Nice! Always wondered what that motor would look like in a rod.

Please post pictures of the motor, including details like the motor mounts, etc.

What tranny/rear end did you use?

 

Thanks,
Check these pages:
http://web.mac.com/rmccombs/iWeb/Cars/Model A.html

Just looking at those, there are not much about the motor mounts. I made the front from a stock one extended down to the frame. Rear mounts are made from 1/4" plate with rubber mounts to the frame, from the wide truck bell housing with the pedals attached. Tranny is a stock three speed, rear is from a 50's Plymouth.

 

Nice build. I like your use of early MoPar motor, tranny,axles and brakes, and the taillights. Great idea to use the pickup bellhousing.

 

ok, thank you. Mine was at best a guess. Ill take a cranking pressure to see where im at. I

 

The cam has 110 degree lobe seperation, 236 degrees of duration, and .550 of lift. .................I also would like more information about your cam. I have a four cylinder Dodge I am building and the cam looks like it will take more of a regrind than most any other cam I have seen. But .550 is a lot. Especially with a 236 degree duration. Is that at .050? This is some steep lobes. What kind of valve springs does that thing need? Where can I get one for my banger?<!-- / message --><!-- sig -->