Thursday, March 4, 2010

403 Stroker with 228/228 115 LSA Cam

Since I've made several posts about the cam/stroker kit etc over time (over a year!) I figured i'd be handy to summarize things a little to give a clear picture of what I had done and by whom - At 26,232 Miles on the stock block I ended up with:

End Result
  • 403 Cubic Inch (that's around 6.6 Liter) Stroker (4.005" Bore x 4.00" Stroke) with -18 cc Dished Pistons
  • 228/228 115 LSA CamShaft
  • CNC Ported Heads with Valvejob
  • Ported Throttle Body & Intake Manifold
  • Sounds like a much louder version of stock - no real lope to speak of 
  • Power: Unknown at this point but seat of pants and losing traction in 4th gear @ 60mph says 'faster' ;)

Shops
  • Norpac Street Performance - Pulling engine, stripping down, shipping parts out, re-assembly
  • Vector Motorsports - Tune & DOD-Delete Cam package
  • Livernois Motorsports - CNC Valve Jobs & Porting of Heads, Stroker Kit
  • Bud's Machine Shop - Machine work, installing crank/rods/pistons - building small block
  • Fasterproms  - Ported Intake Manifold & Throttle Body

Parts
Vector Motorsports DOD-Delete Cam Package Containing:
  • 1x 12599296 - GM Valley Cover
  • 4x 12595365 - GM Lifter Tray
  • 1x 12557840 - GM Pulley Bolt
  • 1x 12586481 - GM Camshaft Sprocket 
  • 3x 12556127 - GM Camshaft Bolts
  • 1x 12626407 - GM Timing Chain Tensioner (NOT USED)
  • 16x PSI-LS 1511ML - PSI Valve Springs
  • 16x 17122490 - AC Delco Lifters - Part# HL124
  • 1x 134-3610 - ARP Bolt Head Kit
  • 16x 7795-16 - CompCams Pushrods
  • 1x CompCams CamShaft - 228/228 115 LSA
  • 2x GM Head Gaskets

With additions:
  • 1x 12579145 - LS2 PCV Outlet Plug
  • 1x 12588670 - LS2 Timing Chain Dampener (used instead of 12626407)
  • 2x 12617944 - Exhaust Manifold Gaskets
  • 1x 12612350 - Oil Pan Gasket
  • 1x 12574294 - Engine Front Cover Gasket
  • 2x 12610311 - Coolant Pump Gasket
  • 8x 12569427 - LS3 Hollow Stem Valves
  • 1x 12594779 - PCV Hose - (NOT USED - Installed Catch-Can Instead)

Further more I added:
  • 1x HME-G68V-2 - Timing Chain (C5-R) 
  • 1x MEL10295 - Oil Pump

The Actual Livernois Stroker Kit contained:
  • 8x -18cc Coated Diamond Pistons w/ rings & pins
  • 8x Callies Compstar Connecting Rods with ARP Bolts
  • 1x Callies Compstar 4.00" Stroke Crank
  • 8x (16 halves) Rod Bearings (I mistakenly thought these were Cam-Bearings at the time!)
  • 1x Main Bearings Kit

I also added
  • 1x DM Performance - LSX Girdle, which caused some issues
  • 10x 12556127 - Main cap side Bolts (Same as Cam Bolts)
In the end I was still missing:
  • Cam Bearings, Front & Rear Crank seals

Install Timeline:
  • Day 1 - Nothing happening here
  • Day 6 - Engine out and goes to Machine shop
  • Day 13 - Have baseline Tune, Machineshop has block totally bare
  • Day 22 - Little Parts confusion + Porting of Heads & TB/Manifold
  • Day 26- Few parts I forgot to get: Cam Bearings, Front & Rear Crank seals
  • Day 34 - Issue with the Girdle not fitting due to unique L76 oil pan
  • Day 37 - Machineshop is done - small writeup on them
  • Day 45 - Picking up the car! Definitely needs some fine-tuning still
  • Days after pickup - Tune issues and power-steering leak
  • Today - Seems to run great and no more leak!

1 comment: