Author Topic: 428-2v propane engine from irrigation pump  (Read 1389 times)

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bluef100fe

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428-2v propane engine from irrigation pump
« on: August 14, 2025, 06:59:08 AM »
So I was looking at market place last Sunday and found this irrigation pump trailer that had a FE on it. Turns out the valve over tag actually matched the engine. Seems to be a 74’ if I read the date code correctly on the block. Has what I think are FT heads on it,with the goofy exhaust, crossover,  C7TE-C. Three bolt flanged exhaust manifolds and 10 bolts holding manifold to the head.

 Anyway my question is does anybody have any info on what the cam specs are that ford used on these engines and what the torque/horsepower rating would be and at what rpm? The ports are tiny on the heads and if it doesn’t run well I’ll probably replace them with ported passenger car/truck heads down the road but I wanted to see how it runs as is first.

I have the oil pan and intake off right now looking over things and taking care of some rust issues I discovered. Appears to be 4.160 bore and .020/.010 mains/rods. Regular 390 rods and cast dish pistons. Clevite rod bearings stamped 2-88 which I believe stands for February 1988 they were made.. FM main bearings and a 1UB crank, M57HP oil pump… never seen one of those before either. Thanks for any insite you guys can provide. 


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Cody Ladowski
1976 F-100 stepside
390 C6 9 inch
1.56 sixty ft.
7.38 @ 91.5
11.79 @ 111.5

jayb

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Re: 428-2v propane engine from irrigation pump
« Reply #1 on: August 14, 2025, 08:06:33 AM »
Cody, I've purchased a couple dozen of those irrigation pump 428s in the past.  They ran on propane or natural gas and were held to a low RPM to turn the pump, and made 180 HP if memory serves.  I don't have any info on cam specs, and the engines weren't good for much except the blocks, cranks, and the non-critical engine parts (timing cover, oil pan, crank sleeve, etc.)  Some of them came with the larger diameter distributor shaft hole in the block.  But with good heads, cam, and intake they make for a good 428 engine.  I've even seen some that were actually 427s.

There's some info on these engines in this thread:

https://fepower.net/simplemachinesforum/index.php?topic=4597.0 
Jay Brown
- 1969 Mach 1, Drag Week 2005 Winner NA/BB, 511" FE (10.60s @ 129); Drag Week 2007 Runner-Up PA/BB, 490" Supercharged FE (9.35 @ 151)
- 1964 Ford Galaxie, Drag Week 2009 Winner Modified NA (9.50s @ 143), 585" SOHC
- 1969 Shelby Clone, Drag Week 2015 Winner Modified NA (Average 8.98 @ 149), 585" SOHC

   

frnkeore

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Re: 428-2v propane engine from irrigation pump
« Reply #2 on: August 14, 2025, 10:12:02 AM »
Here is some gas engine specs.
Frank

'60 Ford Starliner
Austin Healey Replica with 427 & 8.5 Cert

bluef100fe

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Re: 428-2v propane engine from irrigation pump
« Reply #3 on: August 14, 2025, 03:47:58 PM »
Thanks guys, I’m leaning towards changing the camshaft while I have the manifold off. Seems this one is only .244 lobe lift. Guessing very short on duration also. I’m hoping this engine will run good enough to use in my 72’ F350 camper special that I have the Clark 5 speed swapped into, not a race truck but it might haul one at some point if I get a hydraulic pump hooked up to the PTO on the trans to operate the rear ramp bed like want.

Also curious if anybody has flowed one of these C7TE heads? I know the port is tiny but I like that for a low rpm tow vehicle… probably never see more than 4000 rpm
« Last Edit: August 14, 2025, 03:49:43 PM by bluef100fe »


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Cody Ladowski
1976 F-100 stepside
390 C6 9 inch
1.56 sixty ft.
7.38 @ 91.5
11.79 @ 111.5

frnkeore

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Re: 428-2v propane engine from irrigation pump
« Reply #4 on: August 14, 2025, 05:06:41 PM »
I think I'd rather see a set of C8AE-H heads on that engine, with hard Ex seats. The pistons have a pretty good dish in them and the C8's would get you a little more compression.

The Ex manifolds are excellent and you can block the center cross over to use them. I believe they are 2 1/4, as is, with plenty of inside volume.
Frank

'60 Ford Starliner
Austin Healey Replica with 427 & 8.5 Cert

MeanGene

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Re: 428-2v propane engine from irrigation pump
« Reply #5 on: August 14, 2025, 10:23:43 PM »
Cam should be quite small- the Industrials were also used on things like wind machines- and yes, occasionally an off-spec 427 block without crossbolts. Some of the Industrial 428's came with leftover 428SCJ pistons- I have seen 3 wind machine engines that way

My427stang

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Re: 428-2v propane engine from irrigation pump
« Reply #6 on: August 15, 2025, 07:12:24 AM »
I have had a ton of them. 

- Original pistons are marked "SUPER" and are basically a CJ part, but generally hammered away due to detonation.  You'll see a bunch of vertical wear grooves on the ring lands, especially the piston top around the edges. 
- Rods are 390 rods, nothing special
- Crank is a good CJ crank, BUT, most of them run a multigroove pulley off the front and over time shake themselves at 2500 rpm and then have cracks at the 1/5 journal.
- Block is usually a CI/CX, but sometimes can be a C (very rarely) or no mark and usually have cracks on #2 and #4 mains at the main cap threads.  Ironically, they can live a long life that way, but usually you have to tighten up the main cap registers and run a long stud for more thread engagement.  Cap walk causes it, same reason as the cracked cranks.
- Not uncommon to be frozen and a broken valley casting, CI/CX a good casting after that but often a lot of core shift, so before you bore, sonic map the block
- I forget the head casting, but no good for anything
- Cam is a baby, I think like 250's adv, HFT, but I am not sure, but it's made for continuous low rpm duty.
- Memory says 205 HP or something like that, but I do not remember where I even got that number.

The mag is your friend, mag the block and crank. Pressure test the block, save the rods for a stock FE, toss the heads, toss the pistons.

In the end I like to find them, used to pick them up all over Nebraska, now guys tend to think they are CJs.  However, I have never been amazed at the treasure I have found :) ...they are usually old spent workhorses usually and you pick through to find the good parts
---------------------------------
Ross
Bullock's Power Service, LLC
- 70 Fastback Mustang, 489 cid FE, Victor, SEFI, Erson SFT cam, TKO-600 5 speed, 4.11 9 inch.
- 71 F100 shortbed 4x4, 461 cid FE, headers, Victor Pro-flo EFI, Comp Custom HFT cam, 3.50 9 inch

bluef100fe

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Re: 428-2v propane engine from irrigation pump
« Reply #7 on: August 18, 2025, 12:44:14 PM »
Thanks for the info guys, I’ve pulled the heads and believe I’ve found the reason it was taken out of service, heads had seats installed on the exhaust side at some point and number one cylinder torched the exhaust valve and the seat dropped, looks like it was running that way for a short while but thankfully only a few small marks in the top of the piston and not a dropped valve. Must’ve been sitting for some time because there is a decent amount of rust on the cylinder right by that exhaust valve rest of the cylinders look pretty decent with minimal wear, I’ll clean up the rust as best I can, swap the heads for a ported set of D2’s I did a very long time ago, probably a 428 CJ intake and a used small solid flat tappet camshaft that should drive nice and still pull a decent amount of vacuum for brakes. Should be a fun affordable engine when back together.


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Cody Ladowski
1976 F-100 stepside
390 C6 9 inch
1.56 sixty ft.
7.38 @ 91.5
11.79 @ 111.5

gregaba

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Re: 428-2v propane engine from irrigation pump
« Reply #8 on: August 22, 2025, 08:52:40 AM »
My friend has one of these engine's he picked up a few years ago.
Back then I ran the number's on them and they said it was a 428.
Yesterday he said he wanted to sell it as he wasn't going to do anything with it so I told him to bring it to my shop and we would dissemble it and see what it really is and if it was worth selling.
Thanks for the info on what to look for as I had no clue.
Greg