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  • GREGK
    commented on 's reply
    If your on Facebook market place has a few. Nice looking ones in Richland for $50.

  • Quik Fix
    replied
    Originally posted by My My Hey Hey View Post
    Do you need the high ones for valve train clearance?
    Should not. I used these rockers with the shorter valve covers before. Had this engine, with all the stock parts, in the boat about 10 years ago.

    Leave a comment:


  • My My Hey Hey
    replied
    Do you need the high ones for valve train clearance?

    Leave a comment:


  • Quik Fix
    replied
    Originally posted by Ship View Post
    Why new valve covers? Are the existing ones too high?
    Exactly, too high. The finned aluminum Edelbrocks that I had with the engine disappeared at the engine shop. The tall blue ones in the picture hit the mani.

    Leave a comment:


  • Pedlyr
    replied
    Originally posted by Quik Fix View Post
    One thing always leads to another. Put the new manifolds and risers on. Now I need new valve covers. Was thinking of putting the manis in the FW side but, no.
    I couldnt use different valve covers on my 350. The top would hit the exhaust manifolds.

    Leave a comment:


  • Ship
    replied
    Why new valve covers? Are the existing ones too high?

    Leave a comment:


  • Quik Fix
    replied
    One thing always leads to another. Put the new manifolds and risers on. Now I need new valve covers. Was thinking of putting the manis in the FW side but, no.

    Leave a comment:


  • Damon
    commented on 's reply
    Yes, the 14.5 x 14.25 with .150 cup (others are running with the .105 cup).

  • tuner
    commented on 's reply
    The prop is great, very smooth! My engine idles a bit over 600rpm and the speed is very close to 4 knots.

    What size did you install, the 14.5 x 14.25 ?
    Last edited by tuner; 03-22-2022, 08:38 AM.

  • Damon
    replied
    Originally posted by tuner View Post
    The prop is Acme 2275 15x15.75
    How do you like the 4-blade? I recently switched to an ACME 4-blade myself and absolutely love it! It's a different ride for sure (smoother, more responsive, and seems quieter (for some reason)). I'll never go back to a 3-blade.

    Your prop is larger than mine, and my idle speed is around 3 - 3.5 knots @ 600 RPMs. You must be pushing 4 knots or so at the same RPMs!
    Last edited by Damon; 03-19-2022, 02:46 AM.

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  • Quik Fix
    replied
    Y'all convinced me. Ordered Sierra pt#s 18-1997-1 and 18-1907. Not changing the entire exhaust system now. How would I know if the 3" is hampering the performance? I'll use the SS manifolds on my next project which will be dry stacked.

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  • tuner
    replied
    Jerry, I think the 3" riser is too small. All of the Vortec 350 and 383 engines use 3.5" or 4" risers. The 3" riser is fine for older 200-250hp engines. I was able to run a single length of 4" from the riser to the flange at the hooters. My boat was originally 3.5 to the surge Y and 4" from the Y to the transom.

    I ran the 20-0100

    3" would be fine if the exhaust was dry, the water, vapor and steam restrict the flow.
    Last edited by tuner; 03-13-2022, 06:54 PM.

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  • Ship
    replied
    Jerry, am I missing something? The top listing is for 350 Chevy and it includes the long riser as an option. Also saw a spacer to raise the riser even further. Do I have the wrong block?

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  • Quik Fix
    replied
    Originally posted by Ship View Post
    Same site posted by Tuner:
    http://www.barrmarine.net/indmar.html
    Shows the long riser. I assume they mate up.
    They don't. Long riser was what we used on the fords.

    Leave a comment:


  • Ship
    replied
    Same site posted by Tuner:
    http://www.barrmarine.net/indmar.html
    Shows the long riser. I assume they mate up.

    Leave a comment:

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