Flathead: early intake on late block

I would like to buy an early Edelbrock slingshot with a pair of rebuilt 94's on it for my late 49-53 block flathead. I've heard that the block may require modification to use the early style slingshot intake. I had the engine rebuilt by a guy that's no longer around. Can anyone tell me what and how the blocks gotta be modified? Attached are a few pics. The Edelbrock 4 barrel is just an intake laying around that I probably won't use cause I'm going for the vintage look.


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You will not be able to run the road tube or fill tube that is at the front driver side of all 49 & up intake manifolds, so you will have to use the fuel pump stand as a breather and fill pipe.The manifold will physicaly fit but you must vent via the rear where the fuel pump use to go.

 

I had a 2 deuce Edelbrock (old style) to put on my 8BA. Worked on the underside of the manifold until it would sit flat on the block, leaving the breather pipe underneath. Drilled and tapped the manifold for a NPT fitting right over the breather pipe. Hooked up tubing, a pcv and piped it to the carb base. I think would have worked, but I went to an 8BA manifold for a 4 bbl.
RB

 

you could just buy the correct 2 deuce intake from me

 

I'm running an electric fuel pump so I plugged the fuel pump rod orifice and I was planning on putting an oil fill/breather at rear of intake where pump would be as one of you said. So it sounds like the water ports should be the same. What's this biz about porting the block? If the only issue is the breather tube then it might work.




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There aren't any water ports, actual ports and exhaust crossover match, same pattern but fewer bolts in late block...many aftermarket manifolds also delete some of the bolts because of thick castings, and I think a flathead intake would probably seal adequately just held on by gravity!
Issues are lack of locater dowels in late engine, just an annoying bit of cost saving after Henry died that makes any porting more of a h***le, and lack of ventilation. Obviously you vent rear with early stand, PCV hung in valley and leadig over to the vertical pipe at front for its intake side probably easiest way to get ventilation back.
As RB35 said, that front pipe will hit, maybe easiest fix is to pull it and saw off a small amount so it's like a 1948 one.

 

This is what I have.

It sat on the shelf for many years but the EAB carbs have covers and everything looks good. ****erflies open, all threaded holes are good, nothing damaged

 

I have an early 4bbl manifold on a late block. My manifold had fit over the tube that comes up from the crankcase and I located a pcv over that pipe and put the breather on the rear and It works great. Check and see if the manifold you are buying will fit over the tube and if it does not you would have to trim off the top of the breather tube.

 

Look at the first post here with the pics attached. In a few of the pics you can see a tube rising out of the front of the crank case and you can also see a plug where the fuel pump rod would have been.

My question is can a just bolt my intake on over the pipe and have the breather/oil filler bolted on the back of intake where fuel pump is supposed to go? Or does the pipe rising out of the valley need to be connected somehow?

 

i put a 8ba intake on my 59a block,just blocked the driver side tube with a freeze plug,works fine.............

 

What I would do i look up some threads on a pcv system on a flathead - shoten that tube, cap it , and add a ****** on the side of it - atach a rubber hose with a pcv in it from a similary sized engine drill and tap the manifole beneath each carb - plumb pcv in to it - I think thats how it goes...

 

On an 8BA, the crankcase ventilation moves up through that front standpipe and out the road draft tube. ('35-'48 flow goes down that front pipe and out the pan breather) If the pipe is just covered, and not connected to a road draft or vacuum, no engine ventilation will take place. A pcv valve system connected to that pipe, under your early intake, will allow the crankcase to vent properly, with the early style rear oil fill/breather. This subject has been covered many times in the past, and may be beneficial to search and review.

 

Yes you can but it would be much better if you had a PCV routed to be over the tube comeng up from the crank case. You need to flow fresh air in through the breather and out through the PCV. This prevents crankcase pressure blowby and sludge. One of the previous posters suggested plugging the tube and directly connecting a PCV. this is the best solution.