What's the difference between 088 and 2934 heads?
02-28-2015, 06:58 AM
#1
Gold Member
Gold MemberThread Starter
What's the difference between 088 and 2934 heads?
I put my freshened 088 heads on last night and pulled the valve covers on the other engine off and saw they were 2934.
I have access to some 088 heads for free which I will completely go through so I have a ferret match on the motors, but I was just curious......
I have access to some 088 heads for free which I will completely go through so I have a ferret match on the motors, but I was just curious......
02-28-2015, 10:59 AM
#3
Registered
they are the same as this charts shows
02-28-2015, 11:00 AM
#4
Registered
and heres the link to the web site,it has all the oval ports there too.
http://www.minuit10.net/EngineCode/c...linderHead.htm
http://www.minuit10.net/EngineCode/c...linderHead.htm
02-28-2015, 12:32 PM
#6
MarineKinetics
Platinum Member
Sea,
Rectangular Port GM Part No.: Casting # / Part#
6272990 / 6260482 or 14096188 Original LS-7/LS-7 Open Chamber Designed for the MK IV block
140970088 / 14096802 Service replacement head for the Gen V block
12562925 / 12562934 Service replacement head for Gen V / VI block with 7/16 accessory holes
12562926 / 12562934 Service replacement head for Gen V / VI block with 3/8 accessory holes
The last two are current working part numbers. All heads from GM have the 2.180”/2.190” intake valve (as delivered from GM)
Verify block compatibility
Combustion Chamber Volume (cc):
118cc
Intake Runner Volume (cc):
325cc/318cc
Exhaust Runner Volume (cc):
125cc
Intake Valve Diameter (in):
2.180”/2.190” 3/8” Valve
Exhaust Valve Diameter (in):
1.880” 3/8” Valve
26º Intake valve
17º Exhaust valve
4 º Splay
All heads share the same basic port architecture and combustion chamber design. There is no significant performance differential between the heads.
Rectangular Port GM Part No.: Casting # / Part#
6272990 / 6260482 or 14096188 Original LS-7/LS-7 Open Chamber Designed for the MK IV block
140970088 / 14096802 Service replacement head for the Gen V block
12562925 / 12562934 Service replacement head for Gen V / VI block with 7/16 accessory holes
12562926 / 12562934 Service replacement head for Gen V / VI block with 3/8 accessory holes
The last two are current working part numbers. All heads from GM have the 2.180”/2.190” intake valve (as delivered from GM)
Verify block compatibility
Combustion Chamber Volume (cc):
118cc
Intake Runner Volume (cc):
325cc/318cc
Exhaust Runner Volume (cc):
125cc
Intake Valve Diameter (in):
2.180”/2.190” 3/8” Valve
Exhaust Valve Diameter (in):
1.880” 3/8” Valve
26º Intake valve
17º Exhaust valve
4 º Splay
All heads share the same basic port architecture and combustion chamber design. There is no significant performance differential between the heads.
02-28-2015, 04:36 PM
#7
Gold Member
Gold MemberThread Starter
Okay, so it sounds like I don't need to be worried at this point. I'll just have the 2934's gone through same as the others and keep on trucking....
I was worried I might have steered you wrong bin in what you put together for me. I should have spent the 2 minutes pulling the other valve cover off before now, but it doesn't sound like it would have necessarily changed the approach
I was worried I might have steered you wrong bin in what you put together for me. I should have spent the 2 minutes pulling the other valve cover off before now, but it doesn't sound like it would have necessarily changed the approach
