Technical 59ab fuel pump stand on 8ba which push rod? And lets install a PCV valve on a flathead

Well Ive searched and googled but am still unsure what I need to do. I have an 8rt (8ba) flathead that I'm running a 59ab style offenhauser intake and 59ab fuel pump stand on. I will be running an 8ba fuel pump. My question is do I run one of the many variations of the 59ab fuel pump pushrod or the thicker 8ba style pushrod?
I only have the 8ba pushrod on hand. The fuel pump stand and 59ab pushrod are being shipped to me so at the moment I dont have the parts to do any trial and error. I'm just wondering if there is a difinitive answer so I can order the parts quickly to get this thing together. Thanks guys

 

Good info on the thread.

https://www.jalopyjournal.com/forum/threads/flathead-fuel-pump-push-rod.53276/

 

First, I don't think a 59A pump will fit the 8BA stand, but I'll check into that when I can compare parts.
Second, many just run the 59A pump and stand using a stock 59 push rod, or a shortened 8BA rod, probably best because of the larger diameter and better fit.

 

Update. I meant to state above that 8BA pumps will not fit to earlier pump stands, like the 59A. I checked, and this is correct.

 

There are 2 pushrods for'35-48 (not counting European military variants!); you want the longer of the 2 for the manifold pictured. Look at the back of the manifold...the height of the very rear of the manifold would be 1" shorter for the other pushrod. Order a pushhrod bushing for the early engine and try it in the late block. People have told me it will fit...I have tried it without pushing hard, and I think it will go in just right with a couple taps. If it seems too tight (remember you don't want it moving!) give it a few light strokes with a file.
Upstairs you want '35-48 stand and either the 59 pump or the earlier one without glass bowl.

 

To run a 59A push rod in an 8BA motor, drop a 59A pushrod bushing into the 8BA bushing. It is a light press fit. Works very well.
Don't worry about the oil hole, the 59A never had one.

 

Thank you for all the great information to all that replied. Sorry I didnt respond earlier I was thrashing away on the hot rod all day. Guess I need to buy a fuel pump and some bushings at the minimum and a possibly a push rod depending on which one comes with the stand I bought. I'll let you guys know how I made out once the puzzle is complete.

 

Figured Id update this thread incase anyone googles this question in the future.
parts used:
-59ab fuel pump stand and breather
-early fuel pump core. Mine is from a 21 stud 1936 engine
8ba fuel pump arm leftover from a rebuild kit.
I installed the 8ba arm with the larger cup to accept the 8ba pushrod into the early fuel pump. Cut the 8ba pushrod to the length of the 8ba push rod. Install on early stand.
Top arm is 8ba. Notice it has the larger cup.

Larger diameter and length 8ba pushrod vs. early

 

Here is the later arm installed in the early pump base

 

I'll post some pictures of it all assembled shortly. I'm no expert here I figured this might just be one way to skin the cat with parts I had on hand. At this point this combination is UNTESTED but seems pretty straightforward without much room for error. Ill post once I start this old girl up and let you if it works or if it all goes to hell haha.

 

I'm going to regret opening this can of worms... What did you do about the lack of road draft tube? You can't just run it plugged...

 

I'm watching...

 

Im going to run an pcv from the top of the crankcase breather to 2 ports under the intake manifold. The early intake has the breather on top for the in and the pcv plumbed into the manifold will be the out

 

Also its possibe to just machine the offy intake to accept a road draft tube but at that point id just run a later style manifold. Ive been looking at different pcv setups and felt like fiddling with it to see if it really was an improvement or just another way to skin the same cat. I'll find out I guess.

 

I hope you mean PCV not EGR?

 

I sure did mean PCV. and will correct it. I also didnt mean pvc which is what ive also said about 500 times haha. Thanks for pointing it out.

 

And as a side note because I was asked, here's my PCV system to vent the 8ba. Its a mash up of different ideas ive seen in threads on this forum and elsewhere. This took under an hour to do not including stops at the hardware store and napa.
(2) 3/8 brass elbows
A 3/8" brass T
3/8 fuel line
1 rubber grommet
Pcv valve. I used. NAPA Echlin 2-9222

I cut the pipe that used to meet up to the road draft tube down to clear the pcv. Popped the pcv into the grommet and into the top of the tube. Reinstalled in block.
I then drilled and tapped the manifold for 2 vacuum ports one in each log (im not sure what the correct vernacular is for this). I installed the elbows and sealed the threads with oil and gas resistant sealant. Then it gets connected to the valve when the manufold goes back on. Simple.

Now im not sure if im using the correct pcv but its easy enough to change if I need one with a lighter or stronger spring. I'll check back in after I fire it up.

 

Also in the picture it looks like the valve I used has 2 ports. Well it does but the top smaller one is plugged with a plastic plug that it came with so only the bottom is used.

 

Just about ready to fire this baby off. Just wanted to post the picture showing it going together.