Gordon Spohn Racing Engines

Balanced and Blueprinted 396 c.i. Small Block Chevrolet

Block:

- 1969 350 4 Bolt Main +.030
- Block hot tanked, cooked, and magnafluxed
- Line Bored & Honed
- Block Decked
- Block deburred throughout
- All threads chased
- Lifter valley oil restrictors installed
- Lifter valley oil drain hole plugs installed, screens on four end holes
- Cylinder bores and oil pan rails clearanced for stroker crank

Crankshaft:

- Lunati Pro Series 4340 forged crank, 3.875" stroke
- Lunati King Molecular bearings
- ARP 4 bolt main stud kit with extensions for windage tray installation
- ATI Super Damper

Connecting Rods:

- Lunati 4340 Pro Billet Rods; 6.0" length
- Lunati King Molecular Rod Bolts and Bearings

Pistons:

- Lunati 2618 Forged flat-top Nitrous pistons; custom lowered ring locations
- Compression = 10:1 with AFR 76cc Heads
- Lunati custom built rings

Camshaft:

- Lunati Solid Roller Cam & Lifters
Redline: 8500 RPM
- Lunati Hex-a-Just Billet double roller timing chain set
- Competition Cams roller cam button
- Camshaft locking plate and grade 8 bolts
- AC Delco chrome bowtie timing chain cover

Heads and Valvetrain:

- Air Flow Research 220 Competition Package Aluminum Heads
220cc intake runners, 76cc chambers, Angled Plugs
Intake Valves: 2.08 Exhaust Valves: 1.60
- Air Flow Research offset stud girdles
- Crower Stainless Steel Roller Rockers; 1.6 ratio; 7/16" studs
- Gordon Spohn Racing Engines chrome valve covers w/ blue Moroso breathers
- Competition Cams chrome-moly pushrods, +.400 length

Induction System:

- Edelbrock #2970 Super Victor 4500 Intake
- Pro-Systems Built Holley 4500 Dominator 1050 cfm Carburetor
- Holley adjustable fuel pressure regulator (N2O System)
- Magnaflow 4 port adjustable fuel pressure regulator (Main System)
- Magnaflow ProStar 500 electric fuel pump and filter, 500 gph
- Holley oil pressure safety switch for electric fuel pump
- Triangle Engineering aluminum 10 gallon fuel cell w/ GM sender
- NOS Fogger nitrous system
- NOS dual purge system
- NOS fuel pressure safety switch
- Dual NOS bottle system w/dual NOS pressure gauges & blow-off lines
- Dual NOS bottle heaters
- Dual NOS bottle blankets

Ignition System:

- MSD Billet Distributor w/ bronze gear
- MSD 6AL ignition system with rev limiter
- MSD Blaster coil
- MSD remote timing retard system
- Accell 8.8 mm plug wires and looms

Oiling System:

- Melling H-V oil pump with hardened shaft
- Moroso 7 quart oil pan w/ H-V pick-up
- Moroso louvered windage tray
- K&N oil filter
- Royal Purple Racing 21 synthetic engine oil

Cooling System:

- Be-Cool aluminum radiator with all AC equipment removed
- 2 electric fans, one pusher, and one puller
- HD transmission cooler
- H-V water pump
- Goodyear Hi-Miler radiator hoses
- Chrome water neck with 180 deg. thermostat
- Redline Water Wetter

Exhaust System:

- Stahl Racing headers, 1 7/8" primary, 4" collectors
- Dual 4" exhaust with Dynomax 4" bullet mufflers and turn downs

General:

- Stainless steel engine bolt kit
- Chrome dipstick
- Chrome distributor clamp
- Chrome carburetor return spring bracket
- Dual spring carburetor return spring
- March underdrive pulley system
- Vacuum reservoir
- Master Power electric vacuum pump for power brake operation

Engine has not been on the dyno yet. Using the industry standard for calculating horsepower based on the flow of your heads, we estimate this engine makes right around 636 Horsepower at the crank. We spray a 250 shot, and if we get really brave a 400 shot.

For those who wonder about that calculation formula, here it is:

Estimated Horsepower Based on CFM -
HP = .2575 x CFM (@ 28" of water) x number of cylinders