My nephew found a '71 351 SCJ for $1000, but it's in pieces. That's the good part from my perspective, since he can add other things before it gets put together. My idea was to add ARP rod bolts,Chromoly oil pump drive, and make sure the parts the other guy chose are ok. It's been bored .030, balanced with hypertectic pistons, an Edelbrock intake, & some aftermarket cam. That's all I know about it, and I haven't seen it. I've put together a Clevage before, and spent around $3200 10 years ago. I paid $200 just to get bare & rusty 4V closed chamber heads. My nephew says they are the closed chamber(quench) heads with adjustable valves. Any other ideas to add to it internally, of any idea what the compr. ratio might be with these pistons would be appreciated!

 

I didn't know there was a SCJ, only heard of CJ. Anyway, I wouldn't spend much for it. 351C parts are available if you look a little bit and the stuff made today is superior to the factory parts.

As far as goodies, you can go from mild to wild, as long as you have the cash. There's lightweight cranks and rods, roller bearings, roller cams, titanium valves, coated pistons, blowers, magnetoes, belt drives, dry sump oil pans, electric water pumps, fuel injection, aluminum heads, etc.

If you're near Mobile, AL I have some 351C stuff to sell cheap.

 

That's what I've been thinking about the price. I haven't heard of a SCJ either, but I've been out of the hi-po for a few years. Now it's diesel power for me(400hp and 21mpg). He hasn't purchased it yet. It's got everything to put it together right now, but I wanted him to add durability stuff to it. Any ideas on headers for a 4V into a '72 F-100? Low budget is his goal(under $3000) to get it in and running. He did want a Cummins until I told him what it would take to put in his truck.

 

If the truck is for street use, 4V would be too much port. You can get very good performance with 2V and good head work. Or you can get a set of the Australian heads and have 2V ports and valves with closed chambers. Then you can use 2V headers which will yield more low end power for the money.

4V headers for a truck may have to be made. That shouldn't be much trouble, just a little pricey.

If you use the replacement oil pump shaft, read my post titled "What I've Learned". I posted it yesterday so it should still be on the list.

I wouldn't pay more than a few hundred for the engine. If it has a bad block, the rest is just parts. Besides, the collector's value is gone and a regular 2V block with good main studs is acceptable for street use.

 

That's what I built before was a 2V block with main studs. Maybe he could buy the 4V heads and get a 400 block for a semi-cheap stroker(other than the intake adapter).

 

I guess you aren't really getting it. Not to be mean, but you don't need the 4V heads. The 2V heads are awesome and more applicable to a truck.

 

I did know, I was just blabbing

 

I've heard it many a time that the 4V is crap.
Depends on what you want to do. For a power mill with great torque, yea the 2V is the way to go.

Raceing, 4V all the way.
The Ausie 2V are good up to 500 hp. But I was told they don't even flow as good as a Chevy 350.

My 351C 4V (open chambers) , RV cam, Performer intake, Holley 750, ran great. The only thing I didn't like was the cam and intake petered out @ 5500 RPM. Just when it was starting to breath.

I've added solid lift cam, quench heads, roller rockers, & Excelerator intake, but, I put in port plates (intake and exhaust) to give me some down low torque. But will still be able red line @ 6500.
I just have to wire up the Mallory electric fuel pump. I did get to hear it fire the other day, sounded great.

$1000 sounds kinda high for it being in pieces. Running is another story. And what intake is it? Torquer would be cool.

If he wants a work engine, go with a 2V.
If he wants to go fast, get the Aussie heads.
If he wants to eat Bow ties and rice, 4V (quench)

BTW, headers are available. www.fordpowertrain.com I think Hooker also makes some. Depends on the trany you are useing.

My 2 cents

 

Here's what I'd do. If the truck is for street use and getting it done on a budget is critical, I'd use a cheap 351C 2V engine that is complete. Better to use one out of a mid-size family car, less likely to have had any half-assed "performance modifications" done to it.

Have the block cleaned and inspected. Then have a good brand of cam bearings installed. Have crank checked out. Install main studs and a windage tray (you'll need to buy studs for the tray). Get a high-volume oil pump.

Recondition rods and use stong rod bolts. Get a set of pistons in the 9:1-9.75:1 compression ratio range. Overbore only as much as needed and don't go more than .040 over. Don't spend a lot of money on fancy rings, moly is as high-tech as you'll need.

Have all the valvetrain parts match. That is get the springs the are made for the cam, retainers and keepers are the same, etc. Use a dual pattern cam that's not too agressive. 351C's have big ports and valves, they don't need a lot of cam. Use a roller timing chain.

You are going to spend some money on the heads. No two ways about it. Take the heads to a good engine shop for MILD porting work on the exhaust side, unless you can do it yourself. Have the heads inspected and resurfaced. 351C's were made before hardened valve seats, so you will want to have them installed(expensive). Look at getting stainless steel valves. Roller rockers, Ford Racing has a set that fits with no modifications, though you may need taller valve covers.

Get whatever brand intake you like, just use a dual plane. Whatever carb you like in 600-750CFM. Good ignition system.

A good exhaust system. Look at the header topics on the forum. Then upgrade transmission and brakes.

All this will be fairly inexpensive and will be durable. It will certainly get more tickets than we care to think about.

 

$1000 is really high for a cj 351

 

I'd be really wary of a seller trying to convince you that FoMoCo ever made a '351 SCJ'. To the best of my knowledge the SCJ moniker was only ever applied to the 428 and 429 motors from the factory.

 

Just to throw something out, my cousin had a 1972 or 1971 Convertable Mustang that did have the SCJ 351 4V motor. It was apparently an option to have for the 351c. I even looked it up at that time and did find it listed as an engine. They had the 351CJ and 351SCJ.......for what it's worth.

Skippy

 

OK, here ya go.

351C-2V 70-74 All open chamber
351C-4V 70-71 Closed chamber
351C-CJ 71 Open chamber

351C-4V 72-74 Open chamber, later models may have hardened exhaust seats for use with unleaded fuel.

351C-4VCJ(?) 73-74 Some of these castings may have regular 4V valve sizes, but the evidence is that the 73-74 4V head carries 2V size valves. These may also be "CJ" instead of "4V".

351CBoss/HO 71-72 Adjustable rockers/studs and guide plates. HO uses open chamber., Boss closed

As far as I know the SCJ an CJ was the 429 in 70-71

hope this helps

 

In 1971 Mustangs with Cleveland engines were:

351C-2V 'H' code
351C-4V 'M'code
351 CJ 'Q' code.

In 1972 Mustangs with Cleveland engines were:

351C-2V 'H' code
351C-4V 'M' code
351C-4V HO 'Q' code

 

Bill_Beyer,

Was it maybe a 1973? I am almost 100% positive that I did see it when I looked it up.

I could be wrong too.