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finished my 383

1096 Views 11 Replies 9 Participants Last post by  mtnrat
finished building my 383. Runs smooth at 650 rpm, but I think it has a pretty good bark.


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Mine was a big improvement over the 350.Hope yours is the same.Looks good.
Looks very nice. I hope to have some more bite later on this year. Somehow....

working on jetting / carb set-up a little still on mine, but even not dialed in is lots of fun! Good luck with it!
:eek3: WOW, congrats shes a beauty. How many horses? What u putting it in?
about 350- 375 hp and pretty flat 400lbs torque curve.
I researched for a long time for the combination and had Chris Straub design the cam specifically for my combination and application. Had a great engine balancer do that work. Just fired it up this weekend. Super smooth. Idles great. No sea trials yet. Last step of a total resto. Put in composite stringers floor and transom. Faired and painted whole boat and new interior. Took two years to complete.

Some of the parts.
Enginequest Heads 200cc and 72cc combustion chamber.
SB Chevy 383 Mahle Forged D Dish Top Pistons
Scat 383 4340 Standard Weight Crank - 3.750" Stroke
Scat 4340 Forged Pro Stock SBC 6.000" I-Beam Rods - 7/16" Cap Screw.
Lunatti Roller retrofit lifters. 1.5
Clevite 77 bearings
RPM air gap intake
Q-jet jetted for 383
etc etc.
Static compression of 9.1:1
Going in a 1981 Campion Christina

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Looks really good. I love my 385ci and will never build a stock stroke 350 again. They run awesome too!

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Wow!! That boat should fly!
TomZ said:
Wow!! That boat should fly!
I'm hoping it will stay on the water. :laugher:
It will be interesting to see how I will have to prop it. The biggest I have is a 14x23.
It is a volvo 280. I think they are able to handle over 400, some say even more. My combo is built for 350-375hp and a flat 400lbs torque.
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