383 Crate Specs
Thread Starter
Instructor
Joined: Jul 2005
Posts: 124
Likes: 0
383 Crate Specs
Hi all
I came across this engine they are selling here in town.
Just thought I would post the specs, to see what you think, especially with respect to the cam.
Thanks...
New GM 4 bolt main roller block,
line honed,
ARP main studs,
3.75” Scat Cast Iron Crankshaft,
5.7” Scat Rods,
AFR Aluminum Cylinder Heads 195cc Intake, 68cc Combustion Chambers, 2.0 intake, 1.60 exhaust valves, 7/16 rocker studs - These cost me $1490.
Comp Cams XR270 hydraulic roller cam,
forged pistons, 10.0:1 compression
Melling hi-volume oil pump,
brass freeze plugs,
harmonic balancer and flexplate,
oil pan,
timing cover,
all ARP fasteners and Fel-Pro gaskets,
balanced by Basko Engine Service in Gilbert.
Also included:
Power+Plus CrossWind polished intake manifold #52025 similar to airgap(new in box still)it is #8 on this link - http://www.partshp.com/Manifolds.htm
Here are the cam specs:
Comp Cams
Camshaft Part # 08-422-8
Designation XR270HR-10
ADV DUR 270 / 276
Duration @ 0.050" 218 / 224
Max Lift w/ 1.5RR .495 / .502
Lobe Separation 110
Valve Lift: .495 .502
I came across this engine they are selling here in town.
Just thought I would post the specs, to see what you think, especially with respect to the cam.
Thanks...
New GM 4 bolt main roller block,
line honed,
ARP main studs,
3.75” Scat Cast Iron Crankshaft,
5.7” Scat Rods,
AFR Aluminum Cylinder Heads 195cc Intake, 68cc Combustion Chambers, 2.0 intake, 1.60 exhaust valves, 7/16 rocker studs - These cost me $1490.
Comp Cams XR270 hydraulic roller cam,
forged pistons, 10.0:1 compression
Melling hi-volume oil pump,
brass freeze plugs,
harmonic balancer and flexplate,
oil pan,
timing cover,
all ARP fasteners and Fel-Pro gaskets,
balanced by Basko Engine Service in Gilbert.
Also included:
Power+Plus CrossWind polished intake manifold #52025 similar to airgap(new in box still)it is #8 on this link - http://www.partshp.com/Manifolds.htm
Here are the cam specs:
Comp Cams
Camshaft Part # 08-422-8
Designation XR270HR-10
ADV DUR 270 / 276
Duration @ 0.050" 218 / 224
Max Lift w/ 1.5RR .495 / .502
Lobe Separation 110
Valve Lift: .495 .502
Pro
Joined: Jan 2005
Posts: 535
Likes: 0
From: Southaven MS
Hi all
I came across this engine they are selling here in town.
Just thought I would post the specs, to see what you think, especially with respect to the cam.
Thanks...
New GM 4 bolt main roller block,
line honed,
ARP main studs,
3.75” Scat Cast Iron Crankshaft,
5.7” Scat Rods,
AFR Aluminum Cylinder Heads 195cc Intake, 68cc Combustion Chambers, 2.0 intake, 1.60 exhaust valves, 7/16 rocker studs - These cost me $1490.
Comp Cams XR270 hydraulic roller cam,
forged pistons, 10.0:1 compression
Melling hi-volume oil pump,
brass freeze plugs,
harmonic balancer and flexplate,
oil pan,
timing cover,
all ARP fasteners and Fel-Pro gaskets,
balanced by Basko Engine Service in Gilbert.
Also included:
Power+Plus CrossWind polished intake manifold #52025 similar to airgap(new in box still)it is #8 on this link - http://www.partshp.com/Manifolds.htm
Here are the cam specs:
Comp Cams
Camshaft Part # 08-422-8
Designation XR270HR-10
ADV DUR 270 / 276
Duration @ 0.050" 218 / 224
Max Lift w/ 1.5RR .495 / .502
Lobe Separation 110
Valve Lift: .495 .502
I came across this engine they are selling here in town.
Just thought I would post the specs, to see what you think, especially with respect to the cam.
Thanks...
New GM 4 bolt main roller block,
line honed,
ARP main studs,
3.75” Scat Cast Iron Crankshaft,
5.7” Scat Rods,
AFR Aluminum Cylinder Heads 195cc Intake, 68cc Combustion Chambers, 2.0 intake, 1.60 exhaust valves, 7/16 rocker studs - These cost me $1490.
Comp Cams XR270 hydraulic roller cam,
forged pistons, 10.0:1 compression
Melling hi-volume oil pump,
brass freeze plugs,
harmonic balancer and flexplate,
oil pan,
timing cover,
all ARP fasteners and Fel-Pro gaskets,
balanced by Basko Engine Service in Gilbert.
Also included:
Power+Plus CrossWind polished intake manifold #52025 similar to airgap(new in box still)it is #8 on this link - http://www.partshp.com/Manifolds.htm
Here are the cam specs:
Comp Cams
Camshaft Part # 08-422-8
Designation XR270HR-10
ADV DUR 270 / 276
Duration @ 0.050" 218 / 224
Max Lift w/ 1.5RR .495 / .502
Lobe Separation 110
Valve Lift: .495 .502
Thread Starter
Instructor
Joined: Jul 2005
Posts: 124
Likes: 0
That's what I was thinking, that it may be too mild.
But then I could replace it with the XR276HR, or the XR282HR. Just don't know if the last one would be overkill.
I'm open to comments/suggestions for other cams too, and about the rest of the parts.
Just figured I could reuse the other Comp-Cam roller hardware he has there already if I use one of the cams I mentioned.
But then I could replace it with the XR276HR, or the XR282HR. Just don't know if the last one would be overkill.
I'm open to comments/suggestions for other cams too, and about the rest of the parts.
Just figured I could reuse the other Comp-Cam roller hardware he has there already if I use one of the cams I mentioned.
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Le Mans Master
Joined: Jun 2004
Posts: 6,231
Likes: 65
From: Seattle WA
St. Jude Donor '14
Good catch regarding pistons; brand and P/N would be good
Race Director
Joined: Sep 2002
Posts: 10,362
Likes: 5
From: San Diego - Deep Within The State of CONFUSION!
That's what I was thinking, that it may be too mild.
But then I could replace it with the XR276HR, or the XR282HR. Just don't know if the last one would be overkill.
I'm open to comments/suggestions for other cams too, and about the rest of the parts.
Just figured I could reuse the other Comp-Cam roller hardware he has there already if I use one of the cams I mentioned.
But then I could replace it with the XR276HR, or the XR282HR. Just don't know if the last one would be overkill.
I'm open to comments/suggestions for other cams too, and about the rest of the parts.
Just figured I could reuse the other Comp-Cam roller hardware he has there already if I use one of the cams I mentioned.
Le Mans Master
Joined: Jun 2004
Posts: 6,231
Likes: 65
From: Seattle WA
St. Jude Donor '14
Main align honing it to ensure the crankshaft bearing bore is concentric across all of the bearing saddles and to ensure correct bearing crush for each cap. Basically, it makes sure the crank bearing bore is the round, the right size and in-line. If things are way out of whack - or the engine's spun a main bearing - an align bore is sometimes required.
An align hone is required if the type of main cap fastner is changed (bolts to studs) and is generally recommended if you're spinning the engine regularly past 5500 RPM. There's a lot of debate on this - Vizard has a tendency to recommend doing a mock-up and if the crank spins freely leave it, but Yunick's take was "don't even check it - just align hone it". I generally align hone the block for a new crank, but that's just my experience.
An align hone is required if the type of main cap fastner is changed (bolts to studs) and is generally recommended if you're spinning the engine regularly past 5500 RPM. There's a lot of debate on this - Vizard has a tendency to recommend doing a mock-up and if the crank spins freely leave it, but Yunick's take was "don't even check it - just align hone it". I generally align hone the block for a new crank, but that's just my experience.
