Whats everyone's thoughts on B/500

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Rmoore

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This combination uses a long 6.76 440 rod. And uses a very short piston. So naturally some piston slap . a fairly good rod to piston ration 1.628. Bore to piston ration of 1.05. Seems the word on the street is they will run very well. But they are hard on rings and pistons. What yalls experience with this combo
 
I am not a fan of short pistons. Not a lot of lateral support.
 
This combination uses a long 6.76 440 rod. And uses a very short piston. So naturally some piston slap . a fairly good rod to piston ration 1.628. Bore to piston ration of 1.05. Seems the word on the street is they will run very well. But they are hard on rings and pistons. What yalls experience with this combo

Don't use a stroker kit with a Mopar rod. The Mopar rod is too big and heavy. Only use stroker kits that have the Chevy size pins. 2.200 for the rod and 0.990 for the piston. There is no reason to use the bigger and heavier Mopar sizes.
 
Works great, yes, use 2.200 and .990 dimensions, but the short compression height isn't a big deal. All the LS's and Gen3's are running even shorter pistons, not to mention the Ferd stuff. S/F....Ken M
 
700 to 800 at least

You should talk to Jim Laroy if he will spare you the time. @IQ52 I think you'd be happy with a 451......or even a 470. IMO, they would be way more stable engines.
 
Do any of you know this guy Damon Kuhz ??
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I built a 451 using Mopar rods and a 440 crank, 400 Block. That thing ran great! Instant rev when you pop the throttle open. I like the short skirt piston. Looks like a (dare I say? ) small block Chevy unit. And we know how well those things rev! When comparing a 451 piston to a stock 440 piston, the 440 piston looks like a slug. Its 350 to 400 grams heavier. And at 6000 RPM, THE piston is changing direction 200 times a second! No wonder it seems like there's a heavy flywheel hooked onto it when you rev it. Go with the 451 or 512. A budget build requires turning down the 440 mains, and new pistons. You can use the LY rods with a 1.32 C Height piston. I'll never build another 440 if I can do a 451. Plus it's 40 lbs lighter! I put a lot of miles on mine. Plus about 100 runs down the 1/4 mile in a 69 RR, and it always ran great !
 
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Oh yea, I used a Ross dome piston, and ported 915 heads. 13 to 1 C Ratio, with a used 509 cam, and stock stamped steel rocker arms. What a screamer! You can still build a great running Mopar on a budget.
 
I like the shorter rod combo for the B wedge 4.25" strokes. Aftermarket rods are easy to come by, chevy crank pin and .990 piston pins, and a little taller compression height so no oil ring support needed. They make great street engines and will last fairly well (20-30K so far, with some racing and highway blasting). You will need some real heads and a camshaft to feed them at the 800hp level. That aint "RPMs" and a hydraulic flat tappet" deal.
 
This combination uses a long 6.76 440 rod. And uses a very short piston. So naturally some piston slap . a fairly good rod to piston ration 1.628. Bore to piston ration of 1.05. Seems the word on the street is they will run very well. But they are hard on rings and pistons. What yalls experience with this combo
What stroke you talkin about? If you mean the 4.25, you will need a 6.535 rod. Even then, you will have a 1.322 C Height. That's what I'm using in my 512 build. 400 Block. Even then, the pistons will be a little above the deck.
 
Look at 440source website. Check out the stroker combos.
I just picked up a .030 383 with a
440source kit, 4.25 stroke, 6.535 rods and 1.32 flat tops.....I found it on Craigslist
 
Look at 440source website. Check out the stroker combos.
I just picked up a .030 383 with a
440source kit, 4.25 stroke, 6.535 rods and 1.32 flat tops.....I found it on Craigslist

I like the longest rod available , with no ring support needed, piston are lite, but not too short.
Look at hughs website, used to be a tech article on this subject , I think it was hughs .
A 440/505 doesn`t have a short piston, no ring support needed and a 7.1 ' rod.

My last 406 sbc needed ring support , ran like a bear had big block power, and was reliable --------
 
I like a long rod RB also, I have a 496 with a 4.15 crank and a 7.3 BME with a 1.3 piston, but I think he is talking B block
 
My little street toy has a 470 with an Eagle 3.900 crank, Manley 6.760 rods with Mopar big end and .990 pins using Diamond pistons without ring support. 10.2:1 compression. Works great and is a blast to drive. RPMs like a chainsaw and pulls like a freight train.....lol
 
This combination uses a long 6.76 440 rod. And uses a very short piston. So naturally some piston slap . a fairly good rod to piston ration 1.628. Bore to piston ration of 1.05. Seems the word on the street is they will run very well. But they are hard on rings and pistons. What yalls experience with this combo
Need to know the stroke for this to have any meaning.
 
30 years ago I built a 451,ross pistons,440 crank,yl rods,ran 10.30 on alky with iron heads,i have a 540 low deck,4.500 crank,6.53 bme rods,venolia pistons
 
There are 3 rod lengths I know of, the 6.76 stock length 440 LY (heavy) rod, (451) the 6.535 rod used in the 496 and 512 motors with a 4.25 stroke, and the stock 400 rod at 6.38 I think? This rod has been used in the 451 also. I'm using the 6.535 length in my 512 build. Requires an oil ring support spacer. I see no problem doing that, unless you forget to put it in there. LOL
 
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