[angcobra]

I have been over in the Ford camp for a while and now need to get smart on BBC. Please help me with my education by supplying info or links to info.
My starting point is .030 over 427 with a broke rod. (made 390 RWHP before it broke)
Don't know about pistons and crank yet, I have not torn it down.
Solid lift ~.700 lift cam with roller rockers.
Iron closed chamber heads, they been ported and polished and have large valves with dual springs.
1050 Holley Dominator.

I am looking to build for weekly Bracket racing and then hit with 200 shot for match racing.

Specific questions
1) What is longest stroke with short deck and no clearancing issues?
2) What is max bore on stock block?
3) Are the closed chamber heads OK for my application?
4) What is the CC of closed chamber heads?
5) What is the best way to tell if you have short or long deck block?

Any other info or links you could provide would be great.

Thanks in advance

 

[Busted Knuckles]

Post casting numbers of heads and block for starters. They're in the valvetrain area on top of the heads and on the driver's side ledge at the back of the block where the tranny bolts up. Pretty much any big block will go .060 and a lot will go .100 before they need block fill. I'd tear it down before you get too excited about any of it, broke rods quite often take the block out with 'em so you might not have quite as much to start with as you first thought. Good luck, hope it's usable.

 

[67RS502]

Block should go 100-125 over.
stick a storker crank in it and make a 496, 650hp shouldnt be a problem and you wont need the spray then

 

[GRUMPYVETTE]

Specific questions
1) What is longest stroke with short deck and no clearancing issues?

it varies, but 4.25" is easily done on most blocks

2) What is max bore on stock block?

it varies but .060 on almost any, up to .125 on a very few, youll need to sonic test/check the blocks

3) Are the closed chamber heads OK for my application?

yes, usually

4) What is the CC of closed chamber heads?
varies


5) What is the best way to tell if you have short or long deck block?

meassure the distance from the water pump mount to the deck

Any other info or links you could provide would be great.

http://www.mortec.com/location.htm

http://www.mortec.com/bbc.htm

http://www.roadsters.com/bbc/#oval

http://www.survivalmotorsports.com/

http://www.adperformance.com/index.php?main_page=index&cPath=69&gclid=CLmYrsPErooCFQkMEAodS33_qg

http://torquespecs.xoompages.com/hi_po_chev.htm

http://www.chevelles.com/racing/BBCombo.html

http://maliburacing.com/patrick_budd_article.htm

http://www.beckracingengines.com/streetkill468.html

http://www.popularhotrodding.com/tech/0512phr_engine_building_tech_how_to/index.html

http://www.hotrod.com/techarticles/96198/index.html

http://www.camaros.net/racing/BBCombo.html


http://www.brodix.com/heads/heads.html

http://www.dartheads.com/#


http://www.carcraft.com/techarticles/116_0308_big_block_buildup/index1.html

http://www.airflowresearch.com/articles.php#BBC

 

[angcobra]

Thanks Grumpyvette!

 

[93Polo]

Wile we're in a discussion for BBC newbies. Does an externally balanced motor have a neutral balanced flywheel?

Coming from the LTx and LSx world everything is internally balanced.

Thanks,

 

[bb489]

I believe externally balanced engine have some counter weight on the flywheel while the internal ones have a neutral fly whhel.