Twin Turbo 415 SBC specs

rytherwr

Member
Specs on my TT 415 SBC (it's in a 71 Datsun 240Z) on the dyno at the moment working on base tuning...full report later...


Engine:

415 SBC 3.875 stroke/4.125 Bore, 8.6:1 compression ratio
World Products Motown Block
4 bolt mains, O-ringed, splayed billet main caps, priority main oiling
Scat forged crank and H-beam 6" rods
JE custom turbo pistons, hellfire rings
AFR Eliminator Competition aluminum heads 227 cc, completely CNC machined
2.08/1.65 intake and exhaust valves
Jesel aluminum shaft rockers @ 1.65:1 rocker ratio
Manton custom length pushrods 3/8" diameter, .120 wall thickness
Melling high pressure oil pump
Milodon stroker oil pan
Cloyes timing set and cover
Comp Cams special solid roller camshaft:
Grind CS 4872S/4872S SR 113
230/230 degrees duration @ .050
lobe lift .369/.369 "
Lobe separation 113 degrees
Comp Cams 954-16 valve springs
Comp Cams solid roller lifters
Milodon Copper head gaskets (.050)/o-ringed block
Edelbrock Pro XT intake manifold
90mm throttle body
F.A.S.T. 96 lb/hr low impedance injectors running at 52 psi
Electromotive ECM and distributorless ignition
High volume mechanical water pump(would run electric but too much EMI)
7" crank pulley/5" water pump pulley
200 amp alternator
Banks twin 76mm turbochargers
twin 44mm wastegates
Banks cast iron turbo exhaust manifolds
dual 2.5" inlet, single 3" inch outlet intercooler

The rest of the car:
aluminum dual-pass radiator with dual 13" fans
Godley TH 400 transmission and driveshaft
8" 3500 stall converter
4 link/coilover suspension
Full frame and cage
9" Ford rear with 3.50 gears/spool
13X15X32" Mickey Thompson ET Streets
Aeromotive Eliminator electric fuel pump
Aeromotive electronic fuel pump controller
Aeromotive boost-referenced fuel pressure regulator
-12AN from tank through 100 micron filter to fuel pump
-10AN from pump to fuel rails
-8AN return line
E-Boost2 electronic boost controller
Cooling Mist Varicool alcohol injection system
3" downpipes into 3" dynomax straight-throughs

And that is about all I can remember...)

Wayne
 
Those are some killer specs. In N/A tune alone, you're probably pushing 600+ bhp. :mrgreen:

....and those Gale Banks turbos are probably the best available...in my opinion at least. Good stuff from a good guy.
 
 

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    TT415 dyno left front.JPG
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Wow. All that in the stock engine bay of a Z?

It's absolutely beautiful though. That's damn close to the engine of my dreams. Put a GTO body kit on it and I'll give you my first born. :D
 
Thanks for the kudo's Filmjay...I'll pass on the child..:eek:) Still in the tuning stage, however, it is making power at 12 lbs of boost...
 
catch me at 3am when the grand kid needs a diaper change and you can have the kid and keep the car! :lol: :roll: :mrgreen:
 
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