700 CI. BBF

I am relatively new to BBF's so I am wondering why we do not see more 706's or 700+ cid. BBF combos? There are several 706 bbc around here. To build a BBF this large I assume you would need a 11.2 or 11.7 D.H. block and big heads. Besides cost are there any concerns that are specific to bbf's this big? Does anyone have a 706 with thors or something similar and willing to share specs or experience on the build? I just think using an aluminum block, aluminum rods, and billet crank the cost difference on a 632(10.32) to 706(11.?0) would be minimal. If I use similar top end (Thor heads and sheet metal intake)and dry sump parts on both I figure the cost would similar too. Advise or comments?

Thanks Everyone
Kevin S.

Mostly 598-604 stuff around because of cost.

Once to get past the production type stuff limits might as well just build a 821, for the same reasons that you've alread mentioned.

With that in mind, it takes alot of chassis, that most of us don't have to hold onto anything more than a 598 !!! More $$$ LOL

I am just inquiring. I have Thor heads and was just wondering if anyone had a Thor headed 706ish N2O setup and if this is doable? I figure you couldn't/wouldn't want to go that big (800+) with a 4.9 bs and Thor Heads with nitrous. That would be a very large stroke. What D.H. block would be needed for a 706? 11.20 or 11.70?

The taller the better to get a decent (or Most) rod ratio in it. Plus Ring Pack.

The 800" stuff is normaly on the wider bore spacing stuff, so your right probably not for thors.

11.7" to go 700" +

Lem Evans wrote:11.7" to go 700" +

Thanks, Have you done this deal before? I have seen several 632's with Thors and nitrous I am just looking to see how much I would have to do differently to do the 700+. I was thinking 5.25 stroke and 11.7 block. I guess my question is besides the price of the parts are there any BBF specific issues with is. I am just tossing around ideas right now but I need to buy a block soon. I wanted to see if there where any road blocks with doing a bbf like this that maybe I am not seeing before I start making calls.

The biggest one I've had was a 665".......4.6 x 5.00"........11.200" deck ht.

Just putting my 712 together 5.300 bryant billet crank , 11.200 AR aluminum Block 7.190 long Venolia rods , 4.625 bore Venolia pistons , A441 hemi heads , Greg Davis sheet aluminum Tunnel ram, 4 -2.200 bore CFM split Domi's , 4 sets of Fogger Nozzles
it should ROCK!!
Frank

Frank Merkl wrote:Just putting my 712 together 5.300 bryant billet crank , 11.200 AR aluminum Block 7.190 long Venolia rods , 4.625 bore Venolia pistons , A441 hemi heads , Greg Davis sheet aluminum Tunnel ram, 4 -2.200 bore CFM split Domi's , 4 sets of Fogger Nozzles
it should ROCK!!
Frank

YEH! Lets ROCK AND ROLL

Frank Merkl wrote:Just putting my 712 together 5.300 bryant billet crank , 11.200 AR aluminum Block 7.190 long Venolia rods , 4.625 bore Venolia pistons , A441 hemi heads , Greg Davis sheet aluminum Tunnel ram, 4 -2.200 bore CFM split Domi's , 4 sets of Fogger Nozzles
it should ROCK!!
Frank

And you run this in the Hat? I might just make a road trip this summer.



SIR? i doubt it, not a very good rep.

You can build a 648 in a stock deck height $2,500.00 block ... the raised deck height blocks are several thousand dollars more. It takes awful deep pockets for this difference to be considered MINIMAL; much less costing the rest of the parts.

Frank Merkl wrote:Just putting my 712 together 5.300 bryant billet crank , 11.200 AR aluminum Block 7.190 long Venolia rods , 4.625 bore Venolia pistons , A441 hemi heads , Greg Davis sheet aluminum Tunnel ram, 4 -2.200 bore CFM split Domi's , 4 sets of Fogger Nozzles
it should ROCK!!
Frank

Very nice build Frank. Have you run this combination for awhile or is it new? I am just wondering about reliability on these motors. I have no problem with staying on top of maintenance and service. What kind of rpm's do you expect or see?

rmcomprandy wrote:You can build a 648 in a stock deck height $2,500.00 block ... the raised deck height blocks are several thousand dollars more. It takes awful deep pockets for this difference to be considered MINIMAL; much less costing the rest of the parts.

I was comparing the cost of the aluminum 10.3 to 11.2/11.7 blocks. I believe there was like a 3 hundered dollar difference. The billet cranks and rods should cost the same. There maybe a few hundered difference on each of the above but I was quoted the same price. I agree that an a460 block is cheaper than an aluminum but I dont want a 300 pound block. I am just looking for builds and advise. It seems like the only down side is the price difference but an apples to apples comparison seems similar. I guess everyone has differnent ideas of what is similar though. Thanks to all Kevin S.

I know you want an aluminium block but I'd like to make the point that a prepared A460 block is not near 300#.
This is what is bored out of the blocks at 4.600"..........34#

Their are some strenght considerations and HP differences on Iron vs Aluminum too.

Lem Evans wrote:I know you want an aluminium block but I'd like to make the point that a prepared A460 block is not near 300#.
This is what is bored out of the blocks at 4.600"..........34#

Wow, 34 lbs is impressive. I didnt think there was that much in just the bores. How much does an A460 blocks weigh fully prepared versus an aluminum block like maybe a C&S? I have made no decisions yet. I am just gathering info.

Bernie , come on up to The Hat we got 10- 6 sec /low 7 sec doorcars running every weekend
Frank

Lem Evans wrote:I know you want an aluminium block but I'd like to make the point that a prepared A460 block is not near 300#.
This is what is bored out of the blocks at 4.600"..........34#

snake handlin' skills need to be better than average with the aluminum deal.

richter69 wrote:

Lem Evans wrote:I know you want an aluminium block but I'd like to make the point that a prepared A460 block is not near 300#.
This is what is bored out of the blocks at 4.600"..........34#

snake handlin' skills need to be better than average with the aluminum deal.

I love that shop!

Kevin S , this is a new build for me but an old build for Jon Kaase ,he's been giving me some advice and suggestions on the build , and I plan on spinning it 8300- 9000 ,we'll see what it likes on the dyno!!!
Frank

Frank Merkl wrote:Kevin S , this is a new build for me but an old build for Jon Kaase ,he's been giving me some advice and suggestions on the build , and I plan on spinning it 8300- 9000 ,we'll see what it likes on the dyno!!!
Frank

Frank, Sounds like you have the right man for the job. Good luck and great build. An update after the dyno would be great (or better yet a video). Thanks K.S.

snake handlin' skills need to be better than average with the aluminum deal.[/quote]

I know several people who run aluminum blocks (mostly G.M.) but I never have. What kind of strength concerns specifically should I be worried about? I am sure some companies blocks are better than others. Would you (or anyone) maybe P.M. me with some specific block companies/manufacturer concerns or recommendations? I know a few people who run C&C's blocks and have been very happy. It seems that everyone runs C&S blocks. I know these are alot of Q's but I just want to make an informed decision on this block. Thanks everyone. KS

Frank Merkl wrote:Just putting my 712 together 5.300 bryant billet crank , 11.200 AR aluminum Block 7.190 long Venolia rods , 4.625 bore Venolia pistons , A441 hemi heads , Greg Davis sheet aluminum Tunnel ram, 4 -2.200 bore CFM split Domi's , 4 sets of Fogger Nozzles
it should ROCK!!
Frank

Gary

Lem Evans wrote:I know you want an aluminium block but I'd like to make the point that a prepared A460 block is not near 300#.
This is what is bored out of the blocks at 4.600"..........34#

LEM
Is that the secret room?

Ace

powerstrokeace wrote:

Lem Evans wrote:I know you want an aluminium block but I'd like to make the point that a prepared A460 block is not near 300#.
This is what is bored out of the blocks at 4.600"..........34#

LEM
Is that the secret room?

Ace

only if you want it to be the secret room!