Engine with exhaust coming out where intake normally is???

I think I asked this before, and didn't get an answer so I figured I would give it another "whirrl"!! I DON'T have a picture but lately I have seen a few rides that have motors with exhaust pipes coming out where I would have thunk (sp.) the intake manifold would have bolted on. Someone I "think" said Caddillac??? Is this to vague ??? I will look for some pictures to show you what I mean unless someone knows!!! Thanks, Ken

 

it's been done for years. my x-boss was one of the first to run a ford flat head reverse flow with 6 carbs on the exhaust ports.
most likely your referring to the Cad Flathead V-8. Straight 6's and 8's have the intake and exhaust side by side, Cadillac did the same with their V-8. both intake and exhaust came out the top of the block

 

Hey, THAT IS KOOL!!! How the hell does that work???? Not what I am talking about though. I am looking for a pic!!

 

I think that is it!!! I just can't find a picture!! Do you happen to have one, so others will know what I am talking about? Thanks Ken

 

maybe you have seen a Roline 805? A OHV V8 805 cid with intake and exhaust in the top of the engine. They came in ten ton wreckers when I was in the Army

 

Ermie Immerso had a Ford Indy Cammer in his 1962 AMBR winner. The "Golden Star" was a '25 T sporting a gold plated motor of this type. "Bundle of Snakes" headers on top, carbs on the side.
Way cool.

 

I think the motor you are thinking of is a Cadillac Flathead. Here is a picture,


CBB

 

I bought a 425 Nailhead motor setup like that - came from an old 60's digger. The original owner told me that it was quite a popular setup for a couple of years when racers were looking to overcome the problem of the tiny exhaust valves all Nailhead motors have.

Kenne Bell even have a 'reverse-grind' cam spec for it.

Confused the hell out of me when I first saw it and it was returned to 'normal' for use in my own digger. I'll dig up some pics later.

 

caddy flatheads had exhaust coming out the top stock

 

Thats Kevin Sledge's car, he's one of the Socal Shifters. Edmunds dual carb intake, and Cyclone Heads. Very cool Deuce Roadster. I believe it is now a shade of light blue vs. the black.

 

YES, thats it!! so it's a Caddy Flattie!!! Thanks guys

 

One from Milwaukee, WI area with a Cadillac flathead.

 

wow that is cool, never seen one them before

 

The one Bombers posted is a "reverse flow" SBC engineered by a guy in WI named Cob

 

If you ever see Ron Mains Ford flathead V8, it has the exhaust out the normal intake ports and new intake ports welded and machined in th the old exhaust valves. Vortec blower, efi, first and only Flatmotor to go 300 mph.

 

Early Packard V-12's had the exhaust inside the V, as did the American LaFrance firetruck V-12's. How to get the exhaust out of a flathead V-type engine is a compromise, at best. The Ford method of running the exhaust p***age through the block caused cracked blocks and endless overheating problems, the exhaust in the center system led to high underhood temps, vapor lock, and some strange exhaust plumbing. A very big part of the reason why OHV engines were such an improvement in the 50's.

 

my only guess would be a cam with a reverse grind to switch the opening and closing of the valves. also i suspect you woul dhave to run your timing 180 out. i wouldnt think it would be too terribly hard to figure out it would just be getting your hands on a cam with a reverse grind. helluva cool setup though.

 

"Early Packard V-12's had the exhaust inside the V, as did the American LaFrance firetruck V-12's. How to get the exhaust out of a flathead V-type engine is a compromise, at best. The Ford method of running the exhaust p***age through the block caused cracked blocks and endless overheating problems, the exhaust in the center system led to high underhood temps, vapor lock, and some strange exhaust plumbing. A very big part of the reason why OHV engines were such an improvement in the 50's."





I used to get all worried about the exhaust port design on the Flathead Ford V8. How they snaked down through the block and all. In reality the path they take is not all that bad. In fact the exhaust is directed down away from the valve seat and pocket area at a gentle angle. The problem IMO is not that they go through the block so much as it is the bottle necks they encounter at each end. This situation can be improved with some basic port work. The entrance to the end exhaust ports can be pretty easily improved, as can the exit areas. I feel the source of overheating begins at the hot spot area where the two center exhaust ports converge. Again the ports gently "fall away" from the valve pocket area and the port size and shape is pretty good. It's just the space between the center ports that is lacking anything there to direct flow out the exhaust port is the area that ac***ulates heat and makes that a real problem. I've got a sort of "curved sided" diamond shaped set of exhaust port fillers that I made to create sort of a exhaust port "back wall" that direct flow out without impeding it. I have yet to run them but I'm gonna try them soon to see what happens.

If the intake ports on a Flathead Ford were positioned as low and aimed at the valve at the same angle as the exhaust ports are, you'd see a good increase in volumetric efficiency I'm convinced. Relocating the intake ports lower in the lifter valley area would be good modification if it could be done pratically. The type of exhaust path you see on a Caddy flathead V8 is probably a less desireable situation from a flow stand point, when you consider how far back up the port must curve to clear the intake manifold. The first few inches of the exhaust port are the most critical considering the fact that this is the area where the exhaust gases are moving at their greatest velocity and pressure.