Found this...

Popular Combinations
(for reference only Stroker clearancing may be required. Consult your engine builder before building a stroker engine):
454: 4.250" bore x 4.000" stroke
468: 4.310" bore x 4.000" stroke
496: 4.310" bore x 4.250" stroke
509: 4.500" bore x 4.000" stroke
540: 4.500" bore x 4.250" stroke
555: 4.560" bore x 4.250" stroke
572: 4.500" bore x 4.500" stroke
632: 4.600" bore x 4.750" stroke

which block is this?
do you have the part number?
is it olds drc?
thnx

timucin,

This block is the World Products Super Tall Deck block. PN#8012 11.625" deck (although mine came through with 11.665" deck). .400" raised cam, DRC pan rails. Max bore is 4.625, unless bore spacing is increased to 4.900". Max stroke with stock base cirle cam is 5.850". Max cu, 4.625 x 5.600 = 750cu; 4.680 x 5.850 = 805cu. Special cam bearings used, all the same size.

My experience, buy the tall deck and build 572". You will save money with off the shelf parts and still have a big motor.. I didnt and I wished I had, but that sheet metal intake looks very BAD under the hatch.. :D :D :D

Hope this helps..

Dick

Just to add my 2 cents.

The merlin 2 block CANNOT be bored "safely" to 4.625 according to World Products.

Only the Merlin Pro block can be bored that large. At max bore it has a wall thicknes of .400
The Merlin 2 block can be bored to 4.6 with a wall thickness of .250.

I thought I'd split hairs there incase it would matter to you. Remember, the thicker your walls the more hp you can push out safely.

DAVE

Dave F, do you know anything about the "BIG M" block?

I've got 2 of em.:cool:

Mr Gadgets;
after reading lots of forums ,experiences and comments my desicion about my next engines is 540 or 572. there are lots of companies building these engines with very reasonable prices.

As you mentioned xxlarge engines costs too much and they need maintance very often.

reason I asked about the block is: I just want to see the
high-end of american v-8 engines.Just want to see the limits.

805 cu.in = BAADA BOOM
:cool:

Mr Gadgets;
what kind of engines do you have?
pics?
thnx

Kaama,

I have not really researched the big M's. I have researched the Merlins and it seems that the Merlin Pro was the way to go vs. what you get.

Just my .02
DAVE

BTW, you, in an earlier post stated a cost of around $375 for a bore and hone.
What does your machine shop charge you for a balance job on the entire rotating assembly?

KAMMA,

Can you post your contact info for Performance Engineering?

Keith