Huh, I guess you can do that after all......

That's exactly what I was talking about. Mopar performance. I suppose if anyone would figure out compression on a hemi THEY WOULD.

Actually Didn't Tom Kelly certify a HEMI !!! So we know Bob and Dan do know how to do it, being it's already been done. That and it's the same as ANY positive dome , anything over .000 deck is Positive dome.

Donny -you are a magical computer genius that makes stuff like that up all the time. I'm not sure you can be trusted !!! :laugh: :laugh: :laugh: :laugh: :bla:

 

http://www.v8buick.com/showpost.php?p=525058&postcount=130

yes, he did .......

 

Boy, sure it QUIET in here with over 170 views and only three posts, every body must be :sleepr maybe:shock:

 

They're all out in the shop cc'ing their pistons right now....... evidently. :Brow:

 

:shock: :shock: :shock: :shock: :shock: :eek2: :kodak:

Jim

 

Whos dome volume was found to be incorrect?

 

You have got to be kidding...... seriously. ou:

 

Who, me ?

 

I'm not kidding. You guys are refering to Bobs little whistle test? That crazy little music maker measures domes too? Alot of talk I didn't realize he had a cylinder head offo No: He must have though, how else could you all be so sure he's bogus?

What do you really know? I'm betting it isn't dome volume. How could you?

 

11.86:1 is what we know.......... :Smarty:

 

which is actually more that I was able to calculate :Smarty:

 

here is what i know, not much. Pure stock rules state we can be blueprinted to nhra specs. The website of the nhra for each car gives specs as to all of the domes, etc, but this is for super stock rules, we go by stock eliliminator, and i am told that under stock eliminator there is no dome spec listed for a hemi, can someone show me where to find the nhra stock eliminator specs for the cars?

Next question, lets use my car as an example. It says 103cc chamber heads and a .013 dome piston. I cannot even angle cut the heads that much to get it down to 103cc. Donny tells me my LS6 with the specs would be close to 11.0 CR . So the only way to get to 11.0 CR is to use a bigger dome piston. With our rules stating we cannot port the heads, how do you go from 118cc heads to 103cc's??? The nhra also just approves the parts, say for example a hemi pistom with a dome of .88 and above the deck .536, as long as the piston has the nhra stamp, it is legal. We are trying to use the math to get to a compression ratio so that we can check it with the wistle, we do not check for the correct piston.

SO, WHO HAS THE STOCK ELIMINATOR SPECS!!!!!!!

 

Go to NHRA.com, click on the "competition" area in the bar near the top. From there go to "blueprint specs" and click on the make and year of your car. Find your horsepower rating on the chart and you've pretty much got it. The cubic inch and head specs are much the same whether you are in Super Stock or Stock. The major differences come in the valve train and intake manifold area.

 

when i look at it, i only see one chart, super stock i am told, not stock eliminator

 

3 piston makers offered me 88.3 cc domes when I called for NHRA approved stock eliminator parts

 

you're being fed bad information...the nhra spec sheets are the same for stock & super stock, with the differences being what john brown mentioned above.

specifically, the piston dome spec for stock eliminator is the same as for super/stock, in the case of the 70 street hemi 88.3cc. in stock, you have to run the approved piston, which will feature a dome approved by the nhra, with no mods to the piston, so the dome will naturally be within the nhra spec. super stock, on the other hand, only has to be less than the dome/dish spec, but you can fly cut/relief/whatever until your hearts content, as long as your below the dome spec.

ill try and attach the exact rule, but im on my phone, so cross your fingers...!

 

Read the top line when you open the NHRA link (emphasis mine).

NHRA allows superceded parts, PSMCDR doesn't.

 

let me preface this by saying it makes my brain hurt to see the Pure Stock Drags, an organization that stands on it's own worrying about how/what the friggin' nhra does or doesn't do.

with that said, here are the stock and super stock piston rules...

 

Mr Morgan , He's grasping straws and making you look silly.
It's the same blueprint specs we have used from day 1. And being we have certified hemi's BEFORE, the maximum values would be the same used on those supplied BY Dan Jenson in the past- LIKE Tom Kelly's Hemi
If this is wrong -where did Dan get the numbers to compare Toms car. And why are they posted Many years before The car in question. No conspiracies just facts. I'm not going to Dog on you, You have been nothing but nice to me,butttt... This is a dog and pony show that started a couple years ago and needs to find an end.
You answer these questions for me and I'll gladly give you the rest of the puzzle.
On a different note, your heads can go down to 114.8 cc's not 103 same as a 69. The 71 sheet was updated on 4/29/08 and includes a clerical error on the 074 heads. My sheet printed in 2003 shows the aluminum 074 head min at 114.8cc.