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Tomcrafts Engine Build


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so happy to have found your thread i have a 71 240z with a 383 stroker .its a crate from blueprint engines i was wondering what you thought of my engine handling the 6 lbs of boost.like you would love to build it the right way but for now id like to go with a small boost and go till i i cant..think theres any kits that can save me from all the prefabrication thanks tom

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im hoping this engine can handle the setup you have engine only has 8000 mi and is strong so i dont want to kill it but it will be great if i can pick up another 100hp or so untill i can build a motor specifcally for turbo .do you think i should rebuild this motor when it dies or go with another sbc.would like to get800rwhp after rebuild thanks tom

4 bolt main 2pc rear seal block w/Passenger side dipstick (drivers side available upon request)

Square and parallel decked

Align honed main bearing bore

Cylinders honed on computer controlled machine to within .0002 straightness and roundness

Cylinders are sonic tested for thickness

Rotating Assembly:

New SCAT cast crankshaft

Keith Black Hypereutetic pistons

Chevy heavy beam rods with 150,000 psi bolts

Hastings Moly rings

Balanced rotating assembly

Melling high volume oil pump

Flat tappet hydraulic lifter camshaft

Heavy duty double roller timing set

Cylinder Heads:

New Cast iron "vortec" heads

1.25 diameter valve springs

Hardened retainers and springs

2.02 swirl polished intake valves

1.60 swirl polished exhaust valves

1.5 long slot, stamped steel rockers

Hardened push rods

A Ton Of Extras:

Professional Products dual plane satin finish intake manifold

9.5 to 1 compression

New chrome valve covers

Brass freeze plugs

Dyno tested – and shipped with results

Comes with 30 month / 50,000 mile warranty

 

Driver side dipstick is available-please specify when ordering

 

 

 

 

 

Blueprint Engines recommends 91 Octane for this engine and a 2000-2400 RPM stall converter

 

Critical Specs:

 

Stroke:

3.75

Rod Length:

5.7

Camshaft:

.487Int / .508 Exh & 234 Int / 244 Exh duration @ .050 - 110 degree lobe sep.

Horsepower:

405

Torque:

440

Compression Ratio:

9.5 to 1

Ignition Timing:

13 to 16 Degree Initial / 34 Degree Total

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Blueprint Engines

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Your cam is alittle big and the LSA is alittle tight to really work with a turbo. If you can I'd change that cam to something with a 114LSA. Doesn't take much cam when you force feed the engine compressed air. Probably something in the 230 degree duration range at .050, lift around .450 to .470.

Edited by dr_hunt
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  • 4 weeks later...

im in contact with SMRE there putting together a procharger kit with intercooler,blow thru carb and hat,to make about 500hp as like paul i want to build next engine the rt way but 4 now i want to get a feel for forced induction .has any body had a procharger p1sc seems like this co will put together a bolt on system,ill let u know the cost would love to hear ur thoughts

240 z 6-09 009_thumb.jpg

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