SB block question
Thread Starter
Le Mans Master
Joined: Oct 2004
Posts: 5,269
Likes: 54
From: Orlando Florida
St. Jude Donor '05
SB block question
Just saw that Summit sells this GMPP 4-bolt block with a 1-piece seal for $680, their part number is NAL-10105123
It says it comes with a 4.000" bore, does this mean it's already honed and ready to pop the pistons in it ? I thought that new blocks usually come .020" undersized for final honing at the shop....
The photo shows that a standard fuel pump can be used, I thought the 1-piece seal blocks don't have the fuel pump at the engine
From the description it's not clear to me if this block is setup for a roller cam ???
TIA
It says it comes with a 4.000" bore, does this mean it's already honed and ready to pop the pistons in it ? I thought that new blocks usually come .020" undersized for final honing at the shop....
The photo shows that a standard fuel pump can be used, I thought the 1-piece seal blocks don't have the fuel pump at the engine
From the description it's not clear to me if this block is setup for a roller cam ???
TIA
Melting Slicks
Joined: Aug 2003
Posts: 2,135
Likes: 2
From: Dayton Oh
Originally Posted by jimmygmartin
Call there Tech line 1 330 630 0240. I've always had good experiance with these guys.
I've got no experience on the locations of fuel pumps on the 1-piece seal engines. However, it is a safe bet that the bores are undersized since final honing can only be completed with the exact pistons to be used in hand...actually each cylinder will be matched to a specific piston. 
Melting Slicks
Joined: Aug 2004
Posts: 2,063
Likes: 1
From: Beverly Massachusetts
Originally Posted by RedBad1979
Just saw that Summit sells this GMPP 4-bolt block with a 1-piece seal for $680, their part number is NAL-10105123
It says it comes with a 4.000" bore, does this mean it's already honed and ready to pop the pistons in it ? I thought that new blocks usually come .020" undersized for final honing at the shop....
The photo shows that a standard fuel pump can be used, I thought the 1-piece seal blocks don't have the fuel pump at the engine
From the description it's not clear to me if this block is setup for a roller cam ???
TIA
It says it comes with a 4.000" bore, does this mean it's already honed and ready to pop the pistons in it ? I thought that new blocks usually come .020" undersized for final honing at the shop....
The photo shows that a standard fuel pump can be used, I thought the 1-piece seal blocks don't have the fuel pump at the engine
From the description it's not clear to me if this block is setup for a roller cam ???
TIA
i just ordered the one with the two piece seal and i had the same question and they said that the block is ready to install all new parts and the cylender are honed as for the other questions im not to sure so i would say call them to make 100% sure on everything before ordering.
Thread Starter
Le Mans Master
Joined: Oct 2004
Posts: 5,269
Likes: 54
From: Orlando Florida
St. Jude Donor '05
Originally Posted by LIQUIDDRAGON
i just ordered the one with the two piece seal and i had the same question and they said that the block is ready to install all new parts and the cylender are honed as for the other questions im not to sure so i would say call them to make 100% sure on everything before ordering.
From their description it looks like a direct fit. Did you order the 2-piece seal block because you're re-using your crank ? Other than that reason I don't see why you would order the 2-piece seal block. Isn't the 1-piece seal is a lot better than the 2-piece design ??
Navigator
Joined: Jan 2006
Posts: 9
Likes: 0
From: East Bernstadt Ky
Originally Posted by marshrat99
...final honing can only be completed with the exact pistons to be used in hand...actually each cylinder will be matched to a specific piston.
with Marshrat. Each piston will need matched to a specific cylinder. The only way to do this is to have the exact pistons to be used in hand and perform final cylinder honing one piston & cylinder combo at a time.
Melting Slicks
Joined: Aug 2004
Posts: 2,063
Likes: 1
From: Beverly Massachusetts
Originally Posted by RedBad1979
I looked at their blocks because of your thread
From their description it looks like a direct fit. Did you order the 2-piece seal block because you're re-using your crank ? Other than that reason I don't see why you would order the 2-piece seal block. Isn't the 1-piece seal is a lot better than the 2-piece design ??
From their description it looks like a direct fit. Did you order the 2-piece seal block because you're re-using your crank ? Other than that reason I don't see why you would order the 2-piece seal block. Isn't the 1-piece seal is a lot better than the 2-piece design ??
that is correct. i am using my crank and rods from my old block sense they were new and only have a few hours of run time on them but if i was doing a completely new bottom end then i would have gone with the 1-piece but im trying to keep the cost down as much as i can.
im also glad to see that my posts are helping others. 
