300 alcohol pulling tractor

Ekinslow67

New member
So the 6000lb light limited super stock class is growing every year here in southern ky. The points winner last year is running a farmall 301 so I don’t see why a 300 couldn’t be doable. As of now it takes around 1200hp to be competitive. Would this be worth looking further into?
 

Ekinslow67

New member
I think most are running an hx60. We are allowed a 3x3.5” turbo if I’m remembering correctly. I have heard a lot of people are having trouble with headgaskets under big boost but I’m allowed a 1” deck plate so I think I could get somewhat creative with head studs.
 

BigBlue94

Famous Member
Supporter 2021
Supporter 2019
Ekinslow67":2h2n34ag said:
So the 6000lb light limited super stock class is growing every year here in southern ky. The points winner last year is running a farmall 301 so I don’t see why a 300 couldn’t be doable. As of now it takes around 1200hp to be competitive. Would this be worth looking further into?

Sure it's possible, but not very easy. Or cheap. You'll need lots of boost and probably nitrous to get there. And more compression than boost usually likes. Though I'm not familiar with what compression ratio that a blown alcohol engine likes to see.

The Frenchtown flyer is running one as a drag engine that's about 600 hp. That's with a special crossflow head that you simply cant acquire. The custom billet Alan Johnson head would be your best bet. They are rare and about $10,000.

To achieve 1200 hp, I'm not sure any of the 300's strong suits will be retained. Things like low end torque and durability.
 

pmuller9

5K+
VIP
Supporter 2018
Supporter 2021
The 2 bolt main caps won't hold that much power.
You would need to make a one piece lower block skirt that incorporates the main caps.

If you use a deck plate then you can increase the cylinder length to 7.3" and use a billet stroker crank with a long connecting rod.
I believe the class allows up to 370 cu in.
Having said the above I'm not sure how much room there is between the rods and the cam for more stroke.

Rules only allow the original cast iron head so you are looking at a big valve, ported version.
I'm wondering if you can get away with a "Sandwich Head" made from two heads cut horizontally to raise the port angle and increase flow.
 

Ekinslow67

New member
OEM cylinder heads only, cylinder head must match brand of block. NO RECAST HEADS.
A. Lateral movement of valves only. Valves must maintain factory angle. In head valves must seat no lower than the bottom of original head on all 6 cylinders.

That’s how our rules read on cylinder heads. I’m not as concerned with displacement after watching several 301’s and even a couple 310 waukesha’s run very well. I’m more worried about rpm and not having to do a full rebuild during the season haha

I have been planning on aluminum rods, 390 pistons, roller cam, and as much head work as possible. Pairing this with 2 stage fuel injection, msd 8, and a holset hx60 I hope it will be fairly competitive.
 

pmuller9

5K+
VIP
Supporter 2018
Supporter 2021
At least use billet steel main caps with studs. The stock cast main caps will break under the rpm and load you will be running the engine at.

You will need 2618 alloy pistons to hold up under this load.
We use Diamond pistons but most of the 2618 alloy piston manufacturers will do just fine.

Keep the compression ratio under 10:1

What crankshaft are you going to use?
 

Ekinslow67

New member
Thanks! I’ll add that to the list. I should have said earlier that I’ll also girdle the bottom end.

As far as crankshaft i really don’t know. Is there anything off the shelf? I know i have read that some of the industrial engines had forged cranks but I haven’t looked into it very far yet.
 

pmuller9

5K+
VIP
Supporter 2018
Supporter 2021
Ekinslow67":322rl2d5 said:
Thanks! I’ll add that to the list. I should have said earlier that I’ll also girdle the bottom end.

As far as crankshaft i really don’t know. Is there anything off the shelf? I know i have read that some of the industrial engines had forged cranks but I haven’t looked into it very far yet.

There are no off the shelf aftermarket crankshafts. You would have to go with a custom billet steel crankshaft.

Steel crankshafts have been found in some industrial engines and were used in 1965-77 550-600 Series trucks.
Forging numbers are C5TE-B, C5TE-F, C6TE-G"

[image]https://www.dropbox.com/s/fgmq1eajmjjtwkv/300%20Forged%20Steel%20Crank.jpg?raw=1[/image]

Check with "sdiesel". I believe he still has one he would be willing to sell.
viewtopic.php?p=631774#p631774
 

drag-200stang

1K+
VIP
Supporter 2020
Supporter 2021
If the 300 cylinders are thin wall cast like the 200, FTF would know..I would down size the bore and keep the block walls as thick as possible, using good sleeves with the deck plate.. May have to do something with the valves hitting the cylinder wall..Sleeves with the shoulder on top will strengthen bolt boss and seal head gasket better.
 

pmuller9

5K+
VIP
Supporter 2018
Supporter 2021
drag-200stang":33xs65zj said:
If the 300 cylinders are thin wall cast like the 200, FTF would know..I would down size the bore and keep the block walls as thick as possible, using good sleeves with the deck plate.. May have to do something with the valves hitting the cylinder wall..Sleeves with the shoulder on top will strengthen bolt boss and seal head gasket better.
When you are using Methanol the block can be filled solid.
 

drag-200stang

1K+
VIP
Supporter 2020
Supporter 2021
pmuller9":33crl4dx said:
drag-200stang":33crl4dx said:
If the 300 cylinders are thin wall cast like the 200, FTF would know..I would down size the bore and keep the block walls as thick as possible, using good sleeves with the deck plate.. May have to do something with the valves hitting the cylinder wall..Sleeves with the shoulder on top will strengthen bolt boss and seal head gasket better.
When you are using Methanol the block can be filled solid.
That will help the cylinder wall but it wont help holding the block strength if most is bored away for the sleeves ..It can pull away from the filler....I would think that for an extreme build that you would need the most reinforced block, head stud, deck area...But that is just my thought.
 

Ekinslow67

New member
It will be filled block and head. I’ll have to look into the sleeves. I’m hoping with the filler, girdle, and deckplate the block will hold together.

I’m going to make a few phone calls and see if I could use welded 351c heads and correct the valve angle with the deckplate. I have no clue if it will be legal or even work but thought it may be worth looking into.
 

pmuller9

5K+
VIP
Supporter 2018
Supporter 2021
If they won't let you use a sectioned V8 head then I would look at the Sandwich head which is still using the stock head with the same valve angles.
[image]http://img.photobucket.com/albums/v608/6racer/sandwich300head01.jpg[/image]
 

Ekinslow67

New member
pmuller9":2mh25elw said:
If they won't let you use a sectioned V8 head then I would look at the Sandwich head which is still using the stock head with the same valve angles.
[image]http://img.photobucket.com/albums/v608/6racer/sandwich300head01.jpg[/image]


That’s awesome! Thanks for the pictures. Is there a write up anywhere? I tried to search but couldn’t come up with much
 

Ekinslow67

New member
Thank you. The way I understand it just machine both sides flat and add a few studs with a sealer of choice? I will likely weld all the outside seam just for good measure. I think it will be worth a shot and I don’t see why it won’t be legal.

Also, there was a post made in the thread that said they were having better luck out of factory cast cranks than forged? Complete engines around here are going for $150 or so, so if that’s the case then I could just try to keep easily killed parts in stock and possibly be money ahead.
 

pmuller9

5K+
VIP
Supporter 2018
Supporter 2021
Thanks for the video.

Looks like those that are making a full pull have more than enough power and it becomes a matter of traction.
That sled weight sure moves up in a hurry towards the end.
Front end bounce looks like it can be a problem.

Sounds like you will need to make big power at 6000 to 6500 rpm.
 
Top