426 Hemi Replacement Block?
 

I was told by NHRA Tech today that I have to run an original block in Super Stock, that there is no replacement. My question is though, aren't the AH guys running new Mopar blocks?

I am (was?) building a '66 Coronet for SS/EA, and the blocks were the same as the '68 blocks, so why can't I run a new block?

Re: 426 Hemi Replacement Block?
 

I believe that the "new" hemi block has siamesed walls and extra material to make the block more rigid---cuz of this ya get something like 25 more HP something that will not happen with a 1966 block--I think that is NHRAs reasoning behind their ruling---NOT POSITIVE ONLY MY PERSONAL OPINION!!!! Keep trying ya might get it approved but if my reasoning is correct yer not gonna get it passed/aproved---Comp

Re: 426 Hemi Replacement Block?
 

I hope thats not true, If it is then the short block I bought from Dvorak is completely worthless for my stocker.

Thanks Dan, You suck!

Re: 426 Hemi Replacement Block?
 

Wow!! Harsh words,,,hanging a man before the verdict comes in. I've always thought better of you Phillip,,, apparently I misjudged you.
Danny Durham

Re: 426 Hemi Replacement Block?
 

From what I have heard is that World Products makes the Hemis replacement blocks for Mopar and they have cast some Hemi short deck blocks (383 deck hight) that the Hemi Shoot out cars are using. Anybody heard about this???

Re: 426 Hemi Replacement Block?
 

Danny,
Dvorak sent me a short block with illegal pistons, A china made crank and over lenght rods. If I cant use the block now it's a complete screw job on his part. Well maybe I can use the bearings.
On top of that he told me to go ahead and use it his illegal junk since the stock street hemi short block I'm running now isn't super fast. It's all on the internet if you care to read it.

Still think you misjudged me?

So what is the verdict on these blocks? I've been planning on buying the parts to put a good legal short block together using the block Dan sent me but this may end those plans

Re: 426 Hemi Replacement Block?
 

See,,there IS more to the story,,We were talking about blocks, not the internals,,but I'd deffinately say you've got a legal bitch going here.
Are you going to Boise this weekend? If so, I'll look you up. Take care.
Danny Durham

Re: 426 Hemi Replacement Block?
 

It's not worth trying to sue him. I'll let Karma take care of him for me, He's already lost his wife and his leg so it seems to be working.

We decided to stay home instead traveling to Boise. I'm spending money on the Hemi instead of buying all that diesel to get out there. Hopefully it likes the low 1st gear transmission with all those aluminum parts.

Re: 426 Hemi Replacement Block?
 

Here's a couple of photos Charlie Westcott Jr. posted on Moparts earlier this year of the new Mopar blocks NHRA told me no one is running.

http://board.moparts.org/ubbthreads/..._5321759_n.jpg

http://board.moparts.org/ubbthreads/..._1815750_n.jpg

Re: 426 Hemi Replacement Block?
 

Can't tell if 383 or 426 deck height?

Re: 426 Hemi Replacement Block?
 

I believe you have been miss informed. I don't think there is a superstock hemi out there that runs a 45 year old block. Any block that Mopar sells that they consider a replacement block is legal for superstock....P5155072...P5153942....and the P5153943. The 943 block allows the engine builder to put the lifter bore any where he wants to!

Re: 426 Hemi Replacement Block?
 

This is true....no rule that says you have to have "stock" deck height in superstock.

Re: 426 Hemi Replacement Block?
 

O.K.So what about in stock?

Re: 426 Hemi Replacement Block?
 

Stock can use the first 2 part number blocks...must also maintain a close to stock deck height. The max stroke, max rod length and min compression height of the piston keeps you from using a short deck block.

Re: 426 Hemi Replacement Block?
 

That is what I thought and exactly what I said to the gentleman on the phone. (I called Glendora.) When I stated about the lifter bores and etc., I was told no such thing happens. The gentleman on the phone said that there were no accepted replacements for the Hemi and I had to run an original block.

Re: 426 Hemi Replacement Block?
 

Steve call Dave Ley and see what he says, no way all the old hemi cars are using old blocks, you cant even find a decent one. Even the fords have a aftermarket block for stock. And people wonder why there is so much bull that goes on with nhra, no one can give the same answer twice.

Re: 426 Hemi Replacement Block?
 

FYI,

Maybe that replacement block is included in NHRA's Secret Rule Book that is only available to a chosen few.....

If you let the cat out of the bag about the Secret Rule Book you automatically go on Double Secret Probation for the rest of you NHRA racing career....

Please don't forget about the Secret Handshake that is used by the chosen few.

Wink, wick, nod, nod.

Bob

Re: 426 Hemi Replacement Block?
 

Travis Miller can help also if you cant reach Dave.

Re: 426 Hemi Replacement Block?
 

2468330-m?

Re: 426 Hemi Replacement Block?
 

That block is legal....non siamese bores...part # P5007668AB.

Re: 426 Hemi Replacement Block?
 

Are you sure about that? This is a Siamese bore I have here. I guess if the part number on the block say's it's legal then it must be legal, LOL