Jump to content

454LSX Build


amscholtz@comcast.net

Recommended Posts

  • Replies 110
  • Created
  • Last Reply

Top Posters In This Topic

You have an AWD dyno available to you right? Hopefully it turns out well and puts down some numbers

I have to have it towed about 80 miles to the nearest AWD dyno near Seattle, I want it broke in there before I even touch it so it's covered in case something goes wrong.

Link to comment
Share on other sites

  • 2 weeks later...

Finally got some engine specs, I think I translated everything correctly but I attached the PDF as well in case something looks fishy. It is being hauled down to the dyno for break in right now, should hopefully have it back this week yet.

 

456 CI

Block – GM LSX Bore 4.205 8/8 moly finish with/ tor plate

Pistons – JE custom 2.618 4.200 piston to wall .005 comp rate 9.9 to 1 piston to deck .-004

Piston Rings – Total Seal custom .043 moly – 2nd .043 0 3/16 std ten oil Ring gaps .021 top, .021 2nd - + .015 oil rails

Rods – Manley 4340 H Beam 6.125 C to C, ARP 2000 Bolt Rod Bearing CL .0023 ACL Race Bearing .010

Main Line – ARP Main Stud Installed + line honed, Main CL .0027 ACL Race Bearing .010

Crank – 4.100 stroke Forged Crank 10/10 Thrust CL - .004

Cam – Howard Hydralic Roller, Duration .050, In 230, Ex 232 Valve Lift In .625 Ex .625 Lob Center 113 degrees. Intake C/L Installed at 108.5 degrees, piston to valve In .265, Ex .200, cam thrust .005

Heads – Ported but West Coast Cylinder Head – 73cc Chamber, In - 2.165, Ex 1.600 V-Spring 1.780 In, 170lbs on seat, open 420lbs, custom cometic head gaskets.

Engine specs.pdf

Link to comment
Share on other sites

 

Rods – Manley 4340 H Beam 6.125 C to C, ARP 2000 Bolt Rod Bearing CL .0023 ACL Race Bearing .010

Main Line – ARP Main Stud Installed + line honed, Main CL .0027 ACL Race Bearing .010

 

I'm curious as to see what your oil pressure will be at and what oil you will be running. I everything I have read and with guys I have talked to you want your mains and rod bearing clearances to be between .00150 and .00200. Now I am NOT experienced with this. I am just trying to learn from this. Please don't take this as a knock at your setup. I am currently getting ready to assembly my motor and oil pressure is a big deal with something I am trying on my motor.

 

If you could see what weight oil they run in it and oil pressue at idle.

 

I just looked this up. Suggested bearing clearances on stock to moderate high performance is .00080-.00210 mains and .0090-.00250 rods

moderate to high performance is .00250-,00275 mains and .00225-.00250 rods

So you are right there.

Link to comment
Share on other sites

  • 4 weeks later...

Well I have it back finally, had a coil pack code pop up the second day, switched the 6th and 2nd pack just in case but I think the wiring harness just wasn't seated fully, it hasn't come back since. I have put about 150 miles on it so far and other than the same two knock sensor codes coming back like they did before it got rebuilt everything has been good. The codes don't seem to be affecting anything currently so I am going to finish breaking it in and worry about it after that. I also have a picture of the cluster in there, I wasn't sure what I would think of it but I ended up really liking it.

 

Next task will be to tackle the terrible wiring job that it currently has.

 

post-20300-0-24779500-1401249727_thumb.jpg

post-20300-0-49829100-1401249730_thumb.jpg

post-20300-0-18275300-1401249737_thumb.jpg

Link to comment
Share on other sites

Going to just extend the harness where it is needed to tuck it away, I have a nice soldering iron and quite a bit of patience so I will get it done eventually.

 

I have a Gopro sitting in my cab, just need to find some time to set it up and get some video.

Edited by Red454SS (see edit history)
Link to comment
Share on other sites

  • 2 weeks later...

Engine runs great so far, only got about 300 miles on it before the trans acted up though. It'll probably get a 4L80E eventually anyway, but I was hoping to at least get a year to gather parts before needing to pony up for the swap.

Edited by Red454SS (see edit history)
Link to comment
Share on other sites

Sorry to hear the bad luck! At least when your done, your going to have big power and a solid drivetrain! I can't em aging for a n/a build the torque that thing is putting out.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...

×
×
  • Create New...