72 enginge rebuild (STUCK)

[tonym0828]

Fellow Monte  people. OK I bought a set of 186 heads very reasonable from guy who was cleaning his dads's garage who had recently passed away and all he knew was they were off of a 69 Chevelle his dad had. Now they were filthy and I just took them to a head shop to get checked and refreshed if good. I was going to put them with a crane 10005 cam on my 350 which is a 014 block. While they were there. I pulled my 487 heads off and to my surprise had flat top pistons. checked the bore and deck height and got 4.018 bore and .014 deck height. Then they called and said heads were ready. When I got there he asked what the hell I was building. The heads were 2.02/1.6 Manley stainless w/ hardened seats and bronze guides with 58 cc chambers. Can I do anything with this combination or do I have to go all new with the thinking. cause this sounds like somewhere around 11:1 _11.5:1 CR This is just a driver and goes to local shows, no racing.

 

Thanks for any help I can get here.

Murph

[420ponies]

I'm thinking you have a 400cu.in. small block.

[tonym0828]

engine #'s say it is a 68 to 79 350 ci another site says it is 70-72 350 with 2 or 4 bolt mains. the 186 heads I just noticed today are drilled for a 400. I am wondering with the deck height and flat tops if I could run an L46 replacement cam and still run 93 octane. talked to a couple Techs and they both said I would be looking at 13+ cr with the 186 heads. So I am going with the 487 heads ported and a crane 100072 cam. should put me around 350 hp/  Thank 420 for responding

[420ponies]

 I am more concerned on your bore size 4.178" . A sbc 400 block is 4.125" std bore. I hope your not running 350 style heads without a "steam hole" in them. This other information is on your "487 "heads, courtesy of Mortec.com     Cylinder head number  #3973487....71-72...350..........1.94/1.5 or 2.02/1.6 valves, was also used on '71 350/330hp LT1, 75cc chamber
 Cylinder head  #3973487X...71-72...350..........1.94/1.5 or 2.02/1.6 valves, 75cc chamber

You can look on the Mortec.com website and see what you do have. I'd say those 041cyl.heads would be a good set of heads by themselves (64cc).

[Murphy]

Why can't I find that block number (041) could that be a 014??

[tonym0828]

it is an 014 68-79 block mortech says 3970014....350...70-76...2 or 4 The motor had 487 heads on it. I pulled the heads off to put a set of 186 heads on. when I got the 487 heads off I found flat top pistons and a .014 deck height. checked the bore and found it to be 4.178. The 186 heads had been reworked and decked to 58cc chambers. so I am stuck. I need to figure out if it is worth doing the 487 heads or buying something off the shelf.

[tonym0828]

 I am more concerned on your bore size 4.178" . A sbc 400 block is 4.125" std bore. I hope your not running 350 style heads without a "steam hole" in them. This other information is on your "487 "heads, courtesy of Mortec.com     Cylinder head number  #3973487....71-72...350..........1.94/1.5 or 2.02/1.6 valves, was also used on '71 350/330hp LT1, 75cc chamber

 Cylinder head  #3973487X...71-72...350..........1.94/1.5 or 2.02/1.6 valves, 75cc chamber

You can look on the Mortec.com website and see what you do have. I'd say those 041cyl.heads would be a good set of heads by themselves (64cc).

I am sorry the bore is stock 4.018