Level 4 Race Engines
A recent Customer's Level 4 494ci motor, ready for dyno testing. Shown with Custom built Headers, front mount and accessory mount plates.
Level 4 Description This is a pure Drag race
only motor. Specifications vary in working with the individual customer, to meet
their needs for power, mounting capabilities, header configurations, and other
variables. What is presented here is a general overview of this type of motor,
with dyno tests of this motor in several different configurations, and a
'ballpark" price for each. I tend to quote prices on the high side, to
prevent surprises down the road. We will study this motor as a 494, with both a
308S solid lifter Flat Tappet cam, a 260/266 684/700" roller
cam, and then with a 525ci Billet Crank/Aluminum Rod setup, with a 274/278
701/701" roller camshaft. Level 4 494 308S dyno results here. Level 4 494 260/266 Roller
cam results here.
(Cam change only from solid motor- dyno comparison of roller cam performance.) Level 4 494 260/266 Roller
cam motor final results here. Level 4 525 274/278 Roller
cam dyno results here. (coming soon) Level 4 General Specifications Refer here
for general engine specs and procedures. This section lists specific parts for
this combo.
 | Carb- 1250 Dominator |
| Intake- Fully ported SP-2 raised port |
| STG 2 TE Heads, fully ported. Flow numbers here. |
| Cometic Head gaskets |
| TA Lifter Bore girdle installed. (with Roller Cam upgrade) |
| Upper end oil limiting modifications performed. |
| Timing cover- OE cover, Used to cover front of engine, hold water pump and house distributor only. Factory oil pump housing removed. |
| Moroso Single stage External oil pump, with Gilmer drive and all lines. (not shown) |
| Select Engine Block, with TA Block Girdle installed. Water Jackets completely filled. |
| Main Galley By-pass line Installed. |
| Aftermarket oil pan. (Choice of several different vendors, steel or aluminum) |
| Full length custom build Windage screen. |
| TSP Vacuum pump system, with Billet Drive. |
| MSD Billet Distributor |
| New Water pump, long or short shaft as needed. Aftermarket electric pump pump drive, or electric pump optional. |
| TSP Front motor plate and accessory drives optional |
| TSP Mid motor plate optional |
|
SFI Harmonic Damper |
| SFI flexplate |
| 494- Offset ground stock crankshaft, 7" Billet Crower rods, 4.350 Diameter Bill Miller or JE pistons |
| 525- Moldex 4.4" Stroker crank, 6.9" GRP Aluminum Rods, 4.360 Diameter JE Pistons |
| Custom ground solid or Roller camshaft |
| 5/16 Chrome Moly Pushrods custom length |
| TA 1.65 Ratio Roller Rockers |
|
NGK V-Power Racing Spark plugs |
| Choice of 3 different detailed versions of the TA valve covers. |
|
Fully dyno tested and tuned, run stand evaluated, heat cycled, and infrared leak checked. |
Pricing
| Description | P/N | Price |
|---|---|---|
| Complete dyno tested assembly, choice of either Option A or B valve covers. with all core charges for the entire engine. This is a complete running engine, ready to install. Includes all components listed above. Also comes with swivel-caster transport/storage cart. Stock Crank 494, solid lifter cam. 700 HP | TSP-L4 494 Solid cam | $15,365.00 |
| Roller Camshaft upgrade 745HP | TSP-L4RC | $17,250.00 |
| Billet Crank 525" motor, Roller cam 800 HP | TSP L4 525 Roller cam | 18,950.00 |
| Level 4 494 shortblock (no cam) | TSP-L4 494 Short | $8500.00 |
| Level 4 525 Roller cam shortblock | TSP- L4 525 Short | $10,250.00 |
| From your cores |
custcor |
subtract $300.00 |
|
For option C or D valve covers |
TSP-L4cust | add $120.00 |
| TSP Front Motor Plate (left long for final fitting in car) For Accessory mount plate, add $125.00 | TSP-L4 FP | $595.00 |
| TSP Mid motor Plate (Left long for final fitting in car) | TSP-L4 MP | $329.00 |
Custom cast aluminum polishing available at extra cost. More information here.
TA valve cover detailing choices here.