Part 5!! We mount V-band clamps on factory truck LS manifolds and fabricate the exhaust.
Step 1. Hack off the factory collector flanges.
Step 2. Match up the new 2.5″ V-band flanges described in part 4
Step 3. Preheated the manifolds and collectors. The Wife loves it when I put truck parts in the oven…
Step 4. Weld on the V – Band flanges. I welded both the inside and the outside.
Step 5. I put them back in the oven, turned it off, and let them cool slowly. (no pics, not exciting)
Step 6. Clean up the welds, and paint.
Step 7. Reinstall with new hardware. The Dorman 03413B Exhaust Manifold Hardware Kit worked great.
That wraps up the Manifolds. Next, we need to set up the exhaust.
In full disclosure, I was planning on making a Y pipe and using a single Flowmaster 70 that I had bought used off Craigslist. What actually ended up happening was that I decided the Y pipe was too much work, so I ended up re-using the dual exhaust that I took off the truck. The Y-pipe was turning out to be very difficult having to work around the front driveshaft and torque converter cover.
Step Drill Bits are a MUST for any shop. They are so handy, and can be had for CHEAP at Harbor Freight or Amazon: Step Drill Set – 3 Piece
That pretty much ties up part 5. Check out Part 6 for the first start!! I just need to finish odds and ends like belts, coolant, fuel, and wiring.
- Ol’ Blue LS Swap LINK INDEX:
- Part 1: Removal of the 496 BB and wire harness
- Part 2: Initial install of LS motor and adapting to TH400
- Part 3: Custom motor mounts and EGR blockoff plates
- Part 4: Power steering adapter and LS ECM installation
- Part 5: LS manifold V-band and exhaust installation
- Part 6: Coolant/fuel system installation – First Start!
- Part 7: Throttle Cable/Intake/DIY ECM mount
- Part 8: Painless wire harness install and LED conversion
- Part 9: Reconfigure the exhaust…again and finish LED’s