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    Thread: sbc questions

    1. #1
      Join Date
      Aug 2004
      Location
      Annapolis, MD
      Posts
      451

      sbc questions

      OK guys, here a few probably "dumb" questions, but I have to ask as I am pretty new to all this:

      1) what is the best brand and type of gaskets (header, intake, valve covers, fuel pump block off, etc...)

      2) can I put the heads from my rebuilt 327 onto the GM 350/290 and swap out the cam also? The heads on my 327 have a lot of work in them and if I can swap them I think I could make more power if I can swap the cam and heads. What things do I need to check/be aware of if I can make this swap?

      3) are there any lightened high quality flywheels available for 350 to mate it to my 4 speed saginaw?

      Thanks for the hlp guys.

      -George



    2. #2
      Join Date
      Dec 2004
      Location
      North Jersey
      Posts
      983
      I've only used Felpro gaskets, and have had good luck with them. The heads from your 327 will work on the 350; any idea on what size chambers they are? You'll probably get a boost in compression, since I'm fairly sure the 290hp motor has 76cc heads on it. The 327 heads are probably 68cc or thereabouts. Depending on what headgasket you use, you could wind up in the 9.5:1 range, perfectly acceptable on pumpgas.

      Does your block have a 1-piece rear main seal? If so, I know GM makes a nodular iron 15lb. flywheel for that one; not sure if they make one for the older 2-piece rear main.
      Steve Ragusa - North Jersey
      2006 Infiniti G35x
      Former Build - 1988 Monte Carlo SS - ZZ4-cammed TPI 355, F-body serpentine conversion, World-Class 5-speed, Eibachs/Bilsteins, Howe tall LBJs, 34mm hollow front swaybar, 3/4" straight rear bar, 17" Coys C55s, 12" front discs, and more. Sold on 2/28/11.

    3. #3
      Join Date
      Dec 2002
      Location
      Lost Wages, Nevada
      Posts
      2,684
      Country Flag: United States
      1. FelPro

      2. Yes, they are a direct swap.

      3. The GM 15lb nodular is available for a 2pc rear main.

    4. #4
      Join Date
      Aug 2004
      Location
      Annapolis, MD
      Posts
      451
      Thanks for the reply's, I appreciate the info. I should hopefully get the new engine ordered tomorrow and have her up and running again by mid next week.
      -George

    5. #5
      Join Date
      Sep 2002
      Location
      San Jose, CA
      Posts
      1,793
      1) Best intake/head/internal gaskets are Fel Pro. I reccomend the 1003 for head gaskets and the 1256 (I think) for intake.
      Earl's make the best header gaskets with thier pressure master series. Basically a steel gasket with soft inserts that go against the ports

      2) Yes

      3) Fidanza makes good quality Aluminum Flywheels for Chevy http://www.fidanza.com/
      I reccomend the 10.4" to really save weight, with new clutch materials out now (Kevlar-Metallic) lack of grip is no longer an issue.
      1971 Camaro, 383 stroker ~500HP,M21 Trans with lightened flywheel. All Sorts of Auto-x Goodness in the Suspension. 12" Brakes ->SOLD

      But ask me about my 2004 STi Auto-x car...

      Just call me Brett




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