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  1. Scott Danforth

    repowering 2006 Chaparral volvo 5.7 with stroker.

    between 1996 and 2000, all GM trucks uses the L32 Small Block Chevy. after that, the 1/2 ton and 3/4 ton trucks used the LS motor, and the 8.1 liter big block. some of the vans continued with the SBC until 2004 boats continued to use the small block until 2014 when GM industrial motors...
  2. Scott Danforth

    Bone headed move - put the plug in with 3M 4200

    pretty sure he replace the whole garboard assembly about a page back
  3. Scott Danforth

    Best slip on shoes?

    'cus your a tourist?
  4. Scott Danforth

    Mercruiser 2.5 or 3.0 winterization

    if you dont drain it out, it will bust. https://forums.iboats.com/threads/winterizing-inboard-and-i-o.770207/
  5. Scott Danforth

    projects other than boats

    settled on this unit for the Fiat. now to package it.
  6. Scott Danforth

    Need to reduce ventilation

    cost you nothing but a bit of time and some sealant to drop the motor down a hole and try
  7. Scott Danforth

    repowering 2006 Chaparral volvo 5.7 with stroker.

    You can't get the salt out of the motor. Even baking the block and heads. Good news is the 1996 and later L31 V8 was in tens of millions of 1/2 and 3/4 ton trucks. So for about $350 (was $150 pre COVID) you can get a running core at a pick a part yard
  8. Scott Danforth

    Pre engine pull, winterization

    Valve leak if oil doesn't change the numbers Drain the water jacket, pull the motor, oil the ports and cylinders, and kick it under the bench for winter
  9. Scott Danforth

    repowering 2006 Chaparral volvo 5.7 with stroker.

    You still need to get the block and heads
  10. Scott Danforth

    repowering 2006 Chaparral volvo 5.7 with stroker.

    If you can get a new 377 marine motor for $3800. Buy hundreds of them. The going rate is $10,000 for a 6.2 SBC long block
  11. Scott Danforth

    repowering 2006 Chaparral volvo 5.7 with stroker.

    Look at the torque curve.
  12. Scott Danforth

    5.7L Cam Choice

    Skip the pre 1995 block. It will not be machined for the lifter spider for the roller lifters If you get the heads worked on, get them modified for thread in studs and cam lifts higher than 0.45". Then you can look at the XM264HR cam. With some additional work, you can look at the XM270HR
  13. Scott Danforth

    Mercruiser 496 MAG Refresh Thread

    go to NAPA, talk to the pot-bellied grey haired guy behind the counter. should be about $20 for a stamped steel PS pully. you can also straighten yours out with three blocks of wood and an arbor press
  14. Scott Danforth

    repowering 2006 Chaparral volvo 5.7 with stroker.

    To echo what @Scott06 mentioned on reversion. I have high speed GoPro videos of the exhaust pulses being sucked back into the exhaust elbows from over a foot past the outlet at certain RPMs
  15. Scott Danforth

    repowering 2006 Chaparral volvo 5.7 with stroker.

    Since the salt water motor most likely does not have a heat exhangers, assume you need to start with a new block and heads. Machine shop will advise What ratio DP? Assume 1.95:1 What props? What is the wet weight of the boat (actual scaled weight). Dry weight is 5200# for the Chap 256...
  16. Scott Danforth

    repowering 2006 Chaparral volvo 5.7 with stroker.

    the small block chevrolet has gone thru 6 minor generation changes in the 70+ years its been around. just the 350 (5.7) has been around for 5 of them. With power from 130hp to 600 hp naturally aspirated....they are not all the same. building a marine motor is also not the same as a truck or a...
  17. Scott Danforth

    repowering 2006 Chaparral volvo 5.7 with stroker.

    there are better marine ignitions than MSD
  18. Scott Danforth

    repowering 2006 Chaparral volvo 5.7 with stroker.

    Not Marine safe, not SAE J1171 compliant
  19. Scott Danforth

    repowering 2006 Chaparral volvo 5.7 with stroker.

    For decades, Volvo Penta used Holley vs Edelbrock/ Rochester
  20. Scott Danforth

    Car Hood Boats

    That AD truck hood would be worth a few hundred today
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