HT502 502ci Truck Engine, 406 HP @ 4200 RPM

Name: HT502 502ci Truck Engine, 406 HP @ 4200 RPM
Brand: CHEVROLET PERFORMANCE
SKU: 809-88890534
Price: 8227.27 USD
Availability: InStock

^$8,227²⁷

Truck Freight

Ships on 06/05/2031

Lowest Price Guarantee

406 HP @ 4200 RPM
541 ft/lbs TQ @ 3200 RPM

INSTALLATION NOTES:
New block casting incorporates the best designs of Mark IV and Gen VI. New water jackets for use with Mark IV or Gen Vi cylinder heads.
Requires the addition of carburetor, intake manifold, waterpump, fuel pump, starter, distributor and ignition system(not included)
Clutch linkage bosses are now drilled and tapped. When usingcast-iron exhaust manifolds, lower head bolts may need to bereplaced with bolts with shorter heads, for clearance
502 engines now have a mechanical fuel pump boss!(NOTE: There is NO fuel pump lobe behind the boss)
Comes with an externally balanced 14' automatic transmissionflexplate. Use externally balanced flywheel P/N 809-14096987 and11' clutch assembly for manual transmission applications
Designed for pre-1976 street vehicles or any off-road vehicle
Not intended for marine applications
Engine Break-In Procedure
Use conventional or break-in oil (non-synthetic) for the first oil change, be sure to check the oil level in the engine and prime the oil system with an engine priming tool.
Engines with flat tappet hydraulic cams only - Run the engine between 2,000 and 2,500 RPM's, with no-load on the engine for the first 30 minutes. This is critical to break in the camshaft.
Drive the vehicle with varying speeds and loads on the engine for the first 30 miles. Be sure not to use a lot of throttle or high RPM. Run five or six medium-throttle accelerations to about 3000 RPM (40 to 50 MPH), then letting off in gear and coasting back down to 20 MPH. Run a couple of hard throttle accelerations up to about 5000 RPM (55 to 60 MPH), then letting off in gear and coasting back down to 20 MPH.
Let the engine cool and change the oil and filter using conventional (non-synthetic) oil and check coolant level, top off if necessary. Drive the next 500 miles normally, without high RPM's (below 5000 RPM), hard use, or extended periods of high loading. Change the oil and oil filter again using conventional (non-synthetic) oil. Keep an eye on oil level during the first thousand or so miles.
It would be suitable to use synthetic motor oil after the second recommended oil change and mileage accumulation.