308s cam

Discussion in 'Race 400/430/455' started by chrome yellow, Mar 1, 2021.

  1. chrome yellow

    chrome yellow Well-Known Member

    Would the 308s work with a .038 over approximately 11.5-1 455, slightly better flowing ta stg 1 heads, th400, 3800 stall and 3.73 gears 29.5 tall tire? Have this cam from a motor I blew up but would consider any better Cam for this combo. Thoughts? Thanks.
     
  2. hugger

    hugger Well-Known Member

    Would work great
     
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  3. Bens99gtp

    Bens99gtp Well-Known Member

    Thats is a great cam for that application as long as you are not needing vacuum for power brakes. I think my 308s with iron heads at 900rpn only had like 5 or 6" on the gauge.....
     
    Mart likes this.
  4. chrome yellow

    chrome yellow Well-Known Member

    Thanks for the input. I was second guessing using this cam. Don’t need vacuum, no street use.
     
  5. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD" Staff Member

    Yeah, that would be a runner. Be pretty close to needing Race Gas, but might run on 93.
     
  6. 70 GMuscle

    70 GMuscle Plan B

    Make a video when you stab it in. Would like to hear it.
     
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  7. quickstage1

    quickstage1 Well-Known Member

    Would a vacuum can be enough with this cam or would a pump be better for a street/strip car? I've been thinking about a similar build except with stage 2 heads.
    Thanks,
    Ken
     
  8. Bens99gtp

    Bens99gtp Well-Known Member

    I would think you would be better with a pump. I think you need 12"-13" manual to keep brakes happy.........so you might get there off a full throttle decel.......but not driving around town
     
  9. quickstage1

    quickstage1 Well-Known Member

    I've ran non power disc brakes on the car for the last 20 years. When the engine let go about 2 years ago I put together a mostly stockish 455 with parts I had laying around until I can build something else. I also put the power brake booster back on and I think I want to keep it. I'm still figuring out how far I want to go with the next engine but I plan on starting on it this year. Thanks for your input.
     
  10. chrome yellow

    chrome yellow Well-Known Member

    Older thread update. Got the call from machine shop, come and get it. Its done. He ssid it came out to 11.2 to 1. Been there 7 months. Question, should i check some clearances with plastigauge for peace of mind?
     

    Attached Files:

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  11. alvareracing

    alvareracing Platinum Level Contributor

    if it is assembled then, unless you have the same lube he used, the same torque sequence and or stretch value numbers then don't touch it. You should have confidence on him if you took it there in the first place. Now, if it is not assemble, then do what you think makes you comfortable to sleep at night. But from the picture it looks like all the slugs are in and completed.
    Fernando
     
  12. GS Kubisch

    GS Kubisch THE "CUT-UP" BUICK

    And don't trust the timing marks. Make sure the cam is prooperly degreed.
     
  13. Thumper (aka greatscat)

    Thumper (aka greatscat) Well-Known Member

    Like Gary said, degree it, more often than not I've had to move it to get it properly degreed. Makes a big difference.Last one 8 deg.
     
  14. chrome yellow

    chrome yellow Well-Known Member

    Thanks, first engine I’ve had this shop do for me. Im pretty confident he set it up the way i asked. He just slid the cam in, i will degree it. Just had the short block put together.
     

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