What happens to a 5.0 block if you stress it to much.....................!!

[NZGTRA17]

Have been meaning to post these pics for a while. They are of a V8 touring car race engine block from a Ford Falcon 5.0. These cars are around 400 - 430hp and the class is rev limited to 6400rpm. After a rash of similar failures in the field the rules were changed to allow the use of Ford Motorsport 302 blocks. They now use a sportsman style block, not the heavier Boss block.

This why I chose to rev limit my current engine to 5800rpm in endurance races............



And for the flip side..............

[Dawgfan]

In Georgia we take them to the scrap yard, BEER MONEY.

[Cobra4B]

Go FORD! I'm putting a 6500 rpm chip in my MSD box, but only plan on running the car to 6000 rpms

If we happen to replicate what you've shown pictures of above, then it's LS1 time!

[Gatorac]

JB Weld and you're good to go.

[eric1h]

Originally Posted by Gatorac

JB Weld and you're good to go.

LOL, i literally laughed out loud!



brian, you're not allowed to go LS1!! :-D

[NZGTRA17]

Originally Posted by Cobra4B

Go FORD! I'm putting a 6500 rpm chip in my MSD box, but only plan on running the car to 6000 rpms

If we happen to replicate what you've shown pictures of above, then it's LS1 time!

And the bad news Brian is that this is an early block which are supposed to be stronger than our roller blocks. The good news is that these guys in this class of racing punish these engines mercilessly (i.e. they will run with their foot flat and the engine screaming on the limiter @ 6400rpm in 3rd if they figure that is a marginally quicker way through a fast corner).

Always good to have someone keen to do the durability testing Brian, I am sure you will be fine at 6000 though.

I still think my next move will be to a Dart or World Products based 302 block running 360+ cubes. No need to fear any LS1 powered cars with that combo as capable of over 650hp if desired and 500+ a snack!! If you set off a 5 megaton device next to the car with one those blocks fitted, I know what the only left at the bottom of the smoking crater would be..............!!

I have already modelled this combo with the heads, exhaust etc that I already have and it says 530hp and 480 ftlbs of torque. All at lowish rpm.

Kel.

[PanozDuke]

That is amazing. I've seen one break, a roller block, from NOS addiction. It cracked (no pun intended) between the freeze plugs. The thing was still running, but the coolant trail was a clue!

Mike

[Cobra4B]

Originally Posted by eric1h

brian, you're not allowed to go LS1!! :-D

I hope we never have to! But if we do I'll bug you as you've done all of the hard work allready

Originally Posted by NZGTRA17

I still think my next move will be to a Dart or World Products based 302 block running 360+ cubes.

Have you priced one out?

[eric1h]

Originally Posted by Cobra4B

I hope we never have to! But if we do I'll bug you as you've done all of the hard work allready

I need to figure out how to come up with a "kit" LOL

[PanozDuke]

Originally Posted by eric1h

I need to figure out how to come up with a "kit" LOL

If you do it with comprehensive instructions, you would at least be famouser (more famous that now) and I'd bet there would be more than a couple that would go for it. You need an LS1 graphics package as well! I'm Ford all the way (too old to learn much new), but I have been following this with great interest and admiration. COOL.

Mike

Mike

[NZGTRA17]

Originally Posted by Cobra4B

Have you priced one out?

With the new Ford block that Dart have just released Brian, the 'SHP', a heavy duty blocked all forged (crank, rods, pistons) short block will be between $3,500 - $4,000 your money. This is a 7500rpm+ capable combination that will hold all the normally aspirated power you can generate.

Bottom line is that you have to spend similar money on any production engine bottom end to get it to reliably hold much over 500hp for circuit racing. I think drag racing is a different story as a whole season of passes probably only equates to 50'ish laps of circuit racing so you can get away with more production gear............for a while.

I swapped out of my last race car and into the Panoz because the engine that I had to run in that car became really expensive to support beyond 500hp and no aftermarket blocks were available for it. I was running mine around 550hp with 4 bolt mains (a fresh race prepped production based short block for this was NZ$5,000+) and the block was flexing like you wouldnt believe because it just wasnt strong enough to cope. I took a shot a getting the rules changes, they didn't, so I moved on to the Panoz.

Now (with the Ford) it is more a matter of deciding which heavy duty bit to use. Thats a luxury that I am very much enjoying, along with the fact that there is so much scope to improve our cars.

Kel.

[Wess-RA]

I have an actual (current) bid on a 351 dart block stroker. I tried formatting it out of Excel as well as Word but it wont copy over correctly. Anyone know how to make that work? I would like to share it with you guys.

[eric1h]

Originally Posted by Wess-RA

I have an actual (current) bid on a 351 dart block stroker. I tried formatting it out of Excel as well as Word but it wont copy over correctly. Anyone know how to make that work? I would like to share it with you guys.

ctrl + PrintScreen

Then ctrl+V to paste into a jpeg file!

[Wess-RA]

This is an actual current quote on a Dart 351 Windsor Stroker -Eric I must be inept I couldn't get it to work you're way.
Pricing is in 3 categories-Cheapest to highest and the recommended for a strong reliable motor but without overkill. This would be a bullet proof 500hp (at crank) hp motor.

Some of my line items won't make sense as I manipulated them to make the bottom line come out correctly. The notes which explain the Line item manipulation couldn't be copied over to this file.

Way expensive.

[Cobra4B]

Nice... FYI LSX motors have 6-bolt mains and can hold 1000 horse w/ forged rods/pistons. You could do a H/C package to Eric's motor, make 450-500 rwhp all day long. I've got 83k on my LS6 and it still makes north of 430 rwhp cam only. It's had countless HPDEs... granted no 6 hour enduros, but I think the beauty of the LSX is that it comes with much of the stuff needed right out of GM.

If you're building from scratch then the costs equalize.