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  1. #1
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    Default 332 stroker power output

    Hi Guys

    i have a 1976 statesman caprice 332 stroker turbo 400 3200 stall 10 bolt 3.08 gears which i am disappointed in the power output.

    The motor has torque power manifold l34 b style heads with some porting done 650p holley canton high energy sump flat top forged pistons lunati voodoo 227/233 cam msd 6al dizzy pacemaker extractor with twin 2.5" stainless exhaust and the motor has been balanced and blueprinted

    got it run up on the dyne and it made 214rwhp and 460nm on torque and to be honest it is not as much as i was expecting from this combo.

    I think the comp is quite low like 9.5 to 1 and its just done 10000kms

    any suggestions on what could be the problem would be appreciated.
    Last edited by stato332; 20-11-2018 at 10:46 PM.

  2. #2
    Do you ever leave? EH179's Avatar
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    Just a few things that popped straight out after reading your post:

    What type of dyno?

    Which TP manifold is it.

    Low compression with flat tops, the PTD must be excessive (piston to deck height)

    Was the cam degreed when installed.

    Has it been tuned properly.

    3.08 gears aren't ideal for your package.

  3. #3
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    HI
    Rear ratio to tall causing engine to be sluggish having to climb onto cam during acceleration . The stall would help but a bandaid really.
    If a 308 was around 240hp . As a rough figure allow 20% loss on dyno so that = 270 hp flywheel .
    Need major port work or just better aftermarket heads currently stock style head airflow would be considered low .

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    Yep as has already been said - flat tops with 9.5 - 1? = assume the block has not been decked.

    3.08 gears - 3.55 gear if you can find them would be better.

    The cam 227/233 is not especially large, but probably not worth going too crazy with the comp you have and without decent head work.

    Does it drive ok, but the dyno numbers have upset you? If that is the case, I would not worry about the dyno numbers; it's only a tuning tool.

    If it goes like a soggy piece of sh1t and you want more, you could shave the heads to bring up the comp a little, more port work (if they are not decent already), different cam (depending on comp and heads), and 3.55 gears - that will help a bit, but not much.

    If you want something that goes much harder, save your $ for EFI heads + manifold and headers to suit, 355 stroker crank and some machining and a decent cam.

  5. #5
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    Yep, itís all been pretty much covered by the other guys.
    Even with that power soaking turbo 400 trans that is some low numbers.
    Did that fancy dizzy get curved to suit and tuned to suit?

  6. #6
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    dual plane torque power I'm pretty sure, it was a dyno dymanics rolling dyno. i don't know the cam degree and yes it runs well and is in great tune. 3.08 could well be ,getting me down the car is not slow and feels ok by seat o f your pants

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    yes i will be looking for a set of 3.55 only thing I'm worried is it will rev a bit high at 110 cruising speed. i am going to take the car get the heads checked and maybe a new cam to suit the combo. it drives well and feels not super quick but certainly not a slug for a heavy car. i want to stay with old style heads keep it a little original as i can for resale value

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    a good mechanic did the dizzy so i assume yes it was, it runs out of steam at 5400rpm where my last 308 in a commodore made power right up to 6500rpm

  9. #9
    427
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    As you said too mate, it's a heavy car..and still a relatively small engine..

  10. #10
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    Cruising at 110 with 3.55's will still be below the 3200 converter speed, depending on tyre choice.

    The gear swap will get the big girl off the line easier and quicker too.

    Apart from the diff gears, you need to find what's holding the engine back if it's limited to 5400 rpm.
    Things like valve springs,dissy timing and advance setup, fuel supply, and jetting.

  11. #11
    427
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    Thinking about this i agree with the above comments. 3.5 gears will get it into the power band quickly where it needs to be. My guess is that cam will not make power past 6000rpm anyway.
    Especially if the heads wont support it.
    Gears can fix all!! ☺

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    Split duration cam on early heads on a mild engine probably overscavenging.

  13. #13
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    Quote Originally Posted by Str8upal View Post
    Split duration cam on early heads on a mild engine probably overscavenging.
    There's only 6* forward bias on it.
    Do you think a single pattern would be a better choice?

  14. #14
    427
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    If it is only a mild engine, it wont make any real difference. Just my train of thought..

  15. #15
    427
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    And yes EH. I think you are spot on. Nothing wrong with a single pattern for good grunt. ..

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