Roller cam 5.7L build

Discussion in 'The Engine Bay' started by kennyw, May 16, 2019.

  1. sweetk30

    sweetk30 selective wrench turner guy Premium Member

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    in the long run of time / tuning / parts / loss of performance over around 5k rpm and just easy of the install and end goal maybe re think the tpi setup .

    i like my pro flo 4 as its all adjustable my self on the fly and it works good . also lots of popular intake patterns for the intake to pick from so your not limited to a set of heads .
     
  2. kennyw

    kennyw N9PHW Premium Member

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    Are you referring to the bare aluminum manifolds I posted above? I'm not set on vortec heads, just found the remanufactured set price looked good until I added the cost of the manifold. However, those heads and manifold combo are good for 40 hp over the stock TPI setup according to the manifold manufacturer.

    I am set on using fuel injection on this motor. I do not find carburetors reliable enough when I live at sea level but travel through the mountains at 4-5000 ft elevation. TPI is a better system than TBI for overall performance.
     
  3. kennyw

    kennyw N9PHW Premium Member

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    Looks like a good option, $1700 from summit for a kit compatible with either standard or vortec heads.
     
  4. sweetk30

    sweetk30 selective wrench turner guy Premium Member

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    and gives you full timming control and 2 fan outputs with full adjustable temps . there is a ton of adjust ability to this system .

    not saying its for everyone but dam good system with the options it has .
     
  5. Big Ray

    Big Ray 1 ton status Premium Member

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    It is possible to use a L's 411 pcm on a SBC....

    Vortec lower manifolds come up on eBay from time to time. The old Accel SuperRam tpi setup shows up from time to time. The would be the hot setup for a tpi.

    As far as heads, get a set from a PNP off of a old vortex truck. Most yards back home will warranty against cracks....

    I have a l31 5.7 vortec crate motor but I can't bring myself to spend that much $$$ just for a lower tpi manifold.
     
  6. 79rustyk10

    79rustyk10 3/4 ton status Premium Member

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    Is there a casting number on the marine cam, and also are you interested in keeping it?
     
  7. kennyw

    kennyw N9PHW Premium Member

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    I took that cam into the machine shop for setup but I have no need for it. I can grab it when I drop off the new cam.
     
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  8. kennyw

    kennyw N9PHW Premium Member

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  9. kennyw

    kennyw N9PHW Premium Member

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    Tore down the firebird 305 TPI donor. Turns out it is a roller cam motor. Now I need to figure out if the 14101081 heads are worth using on the 350 with a little rework. They are 1.84 intake, 1.50 exhaust, 58 cc chamber. I want 1.94 intake, 1.50 exhaust, 64 cc chamber.

    20190817_192054.jpg

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  10. Bent77

    Bent77 lil meanie Staff Member Moderator GMOTM Winner

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  11. wasted wages

    wasted wages 1 ton status Premium Member

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    Fwiw,,, I can't agree...for the cost of putting in 1.94 valves and seats, rocker studs, resurfacing, maybe a little bowl and blending work, you still end up with a basically stock set of 1.94 heads.

    Depending on what the machine shop charges would be, I bet you can find a new set of better heads for close to the same money...
     
  12. kennyw

    kennyw N9PHW Premium Member

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    I'm going to be $1200 minimum into buying new vortec heads and lower intake to match for the TPI. I'm waiting to hear back from my machinist with an estimate for working these heads. I'd it's more than $600 I'd go vortec.
     
  13. beags86

    beags86 Eastbound and Down Premium Member

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    https://www.holley.com/products/fue...dbQcBTHlLfwLFTIZMyr4YybzsZ97R2QYaAqvSEALw_wcB

    Here's a harness for you to use.

    And you can use Holleys hp ecu

    https://www.holley.com/products/fuel_systems/fuel_injection/hp_efi/hp_ecu/parts/554-113

    Or even there dominator ecu.

    https://www.holley.com/products/fue...ion/dominator_efi/dominator_ecu/parts/554-114

    Anyway you won't have to mess with any tuners if you use the Holly stuff. More costly up front. But think about tuning time. Or even Dyno tune time. Money can go quick and you would have a better product in the end.
     

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