motor for engine build
Thread Starter
Racer
Joined: Sep 2008
Posts: 353
Likes: 0
From: West Point MS
motor for engine build
I found a 5.7L chevy vortec engine with a 10243880 block casting number in my area. From what I have read it is a 96 and later motor. will this engine work for a build to go in a 75 corvette? I know it has a one piece rear main but what mods do you have to make to accomidate this?
Le Mans Master
Joined: Sep 2001
Posts: 7,739
Likes: 630
From: Unreconstructed, South Carolina
It requires a different flywheel/flexplate than your 75 has ... bolt pattern & balance are different beginning 1986.
All 96up have electric fuel pump ... blocks' fuel pump boss is probably not completely machined ... you have to look. A local shop charges $75 to finish.
They also have an OE thin metric ringpak ... helps bore last long time; ensure your rebuild uses thin ringpak and NOT like what's in a C3. A pal just got a "new" 2008 Z71 pu ... & just sold his 96 Z71 pu w/ iron 350 vortec (vincode "R") ... he bought it new & maintains his stuff real well ... that 96 had about 150K and ran as well & quietly as new & no smoke & no oil use.
W/ roller lifters & vortec heads, a 96up "R" vortec motor is good choice as a core for rebuild.
-edit-you probably know its vortec heads require different intake manifold than your 75 ... also your shallow vette oil pan (~7") won't fit either. No waffling here, still a good choice to build for a 75.
All 96up have electric fuel pump ... blocks' fuel pump boss is probably not completely machined ... you have to look. A local shop charges $75 to finish.
They also have an OE thin metric ringpak ... helps bore last long time; ensure your rebuild uses thin ringpak and NOT like what's in a C3. A pal just got a "new" 2008 Z71 pu ... & just sold his 96 Z71 pu w/ iron 350 vortec (vincode "R") ... he bought it new & maintains his stuff real well ... that 96 had about 150K and ran as well & quietly as new & no smoke & no oil use.
W/ roller lifters & vortec heads, a 96up "R" vortec motor is good choice as a core for rebuild.
-edit-you probably know its vortec heads require different intake manifold than your 75 ... also your shallow vette oil pan (~7") won't fit either. No waffling here, still a good choice to build for a 75.
Last edited by jackson; Feb 22, 2009 at 02:33 PM.
Thread Starter
Racer
Joined: Sep 2008
Posts: 353
Likes: 0
From: West Point MS
It requires a different flywheel/flexplate than your 75 has ... bolt pattern & balance are different beginning 1986.
All 96up have electric fuel pump ... blocks' fuel pump boss is probably not completely machined ... you have to look. A local shop charges $75 to finish.
They also have an OE thin metric ringpak ... helps bore last long time; ensure your rebuild uses thin ringpak and NOT like what's in a C3. A pal just got a "new" 2008 Z71 pu ... & just sold his 96 Z71 pu w/ iron 350 vortec (vincode "R") ... he bought it new & maintains his stuff real well ... that 96 had about 150K and ran as well & quietly as new & no smoke & no oil use.
W/ roller lifters & vortec heads, a 96up "R" vortec motor is good choice as a core for rebuild.
-edit-you probably know its vortec heads require different intake manifold than your 75 ... also your shallow vette oil pan (~7") won't fit either. No waffling here, still a good choice to build for a 75.
All 96up have electric fuel pump ... blocks' fuel pump boss is probably not completely machined ... you have to look. A local shop charges $75 to finish.
They also have an OE thin metric ringpak ... helps bore last long time; ensure your rebuild uses thin ringpak and NOT like what's in a C3. A pal just got a "new" 2008 Z71 pu ... & just sold his 96 Z71 pu w/ iron 350 vortec (vincode "R") ... he bought it new & maintains his stuff real well ... that 96 had about 150K and ran as well & quietly as new & no smoke & no oil use.
W/ roller lifters & vortec heads, a 96up "R" vortec motor is good choice as a core for rebuild.
-edit-you probably know its vortec heads require different intake manifold than your 75 ... also your shallow vette oil pan (~7") won't fit either. No waffling here, still a good choice to build for a 75.
Thread Starter
Racer
Joined: Sep 2008
Posts: 353
Likes: 0
From: West Point MS
http://cgi.ebay.com/ebaymotors/Parts...1%7C240%3A1318
Last edited by timd02; Feb 22, 2009 at 05:52 PM. Reason: incorrect link
Drifting
Joined: Dec 2005
Posts: 1,360
Likes: 3
From: NORTHEAST
So what are your thoughts on this engine as a platform for a rebuild and upgrade? I am also looking into the Dart SHP that you told me about as well as a Lunati short block, they are only about an hour away from me. Here is the link to the motor I am looking at.
http://cgi.ebay.com/ebaymotors/Parts...1%7C240%3A1318
http://cgi.ebay.com/ebaymotors/Parts...1%7C240%3A1318
I see it has PM rods and I have seen enough crate engines with broken rods and it looks to be just a cast crank as well, No matter what the block still should be checked out.
Good luck which ever way you go.
