Yeah, you're right I should have been more specific. By PSD I am referring to the 7.3. Either the OBS 7.3 or the SD 7.3 will have to have more or less the same modifications to make that power level reliably (turbo, injectors, HPOP, E-fuel, and a chip). As for the IDI, I suppose you could look at it either way, although it seems to me to be far more commonplace that you find N/A IDIs than the factory turbo option. I assume the biggest difference would be that with the N/A engine you would have to add the manifolds and hot side plumbing? To be fair, lets say it is a IDI with the factory turbo. That's probably the closest comparison.

 

DIY- idk it its in this thread or not, but we covered that pissin match with diesel brad not to long ago. Bottom line was you can do it for around 500-750 cheaper on an IDI vs a PSD. About 3k for an IDI, if you have a turbo IDI then thats going to save you a wad of cash from having to buy the cast parts to run the A3K or something similar. THe prices were for 500hp. You might look back through this thread a few pages and might run across it. For the most part, they both need the same things to get to the same spot, studs, e-fuel, v-springs, turbo, injectors (idi saves a bunch there), fuel pump(not sure what HPOPs run) exhaust, IC.. etc etc.

Theres a catch with this too though. Iirc we all agreed if you went used stuff on the PSD then it would be cheaper to build. Obviously there isnt going to be really any used hi-po IDI stuff.

My budget for the 92 is 4k, that covers everything from IC to clutch.

 

Good info. I will have to look back through the thread as I may have missed that page or two. Again, my intent wasn't to try to start a pissing match, I am just curious. Honestly I am glad to see the IDI get some respect. That is a great motor it really is. Tough as nails for sure.

I agree that for 500 HP they would be close in price, but for 350HP I wouldn't feel that you need studs and springs (or push rods for that matter) for a PSD, so I'm not sure which way that tips the scales. Good info though. I will have to scan back through the annals of IDI performance development. Thanks for the input, "hairy".

 

All good points.

This was the thread where it was covered... Pretty much goes over it on page 4 and 5...

https://www.ford-trucks.com/forums/1...werstroke.html

 

To be honest granted Racin's engine is a close to such turbo engine but I see no reason at all that a NA engine can't handle 350hp even stock. It pretty much comes down to having studs, upgraded fuel, and an efficient turbo and intercooler as well as the other upgrades mentioned. And like has been said before you can get most of that stuff from r&d performance. Most of the old school thought is being proven untrue but it just comes down to finding the limits. IMO those limits are probably more than 500hp on a stock block. Only time will tell how strong these engines are at those levels...

 

350hp will probably be in the PSDs favor as you still have to do everything to the IDI that you would for a 500horse, whereas in a PSD thats what, sticks, IC, efuel and chip?

 

HAHAHA, that cracks me up, my last post, classic... forgot all about it, and it did end.

 

You are right dollar for dollar at 350hp but I was just saying that an idi will last and still be relatively cheap to mod to that level.

 

That's why I would prefer to trust your products, some are way to sensitive when it comes to even the possibility of criticism and that does not inspire me as a buyer. I've been keeping a close eye on this thread, keep up the good work.

It's good to see Ace over hear on the idi side. He's always been a strait shooter.

 

I'd like to remind everyone to rep the Justins as often as possible for the great work they have done in this thread and for blazing a new trail for the old Internationals

 

Thanks for the good words guys...

As for the truck..


I am happy with what I got done this weekend for a change. Started out saturday at my metal supplier and picked out some stuff. Then I rolled the truck out and cleaned up the frame (In the daylight this time)...

Boxed in the frame from just behind the crossmember that supports the cab, to just after the front shackle mounting point. Then I added three new crossmembers out of 2x3 .125 wall tubing, fishplating the frame. I also tied together the back of the frame rails with some plate...

Doesnt look like much, but it was a decent amount of work.










I may or may not triangulate a couple of crossbars between the front crossmember and front "tank" crossmember... Ill think about it and well see.

Next up is to mount my air bags and fab my traction bars up....

 

Looks great, keep up the good work.

 

Sweet... Built FORD tough...Ya if ya got a welder handy...LOL... Looks great should Keep that frame twisting torq monster under control. Hey I'm going on two weeks vacation/Job interveiw in AZ and when I get back I'm going to send you some stuff. I will PM you the details After the 8th of next month.

 

It look good how are you going to mount your gas tank

 

Ive seen better