Circle Track Factory Stock "GM 602" Engine
- Requires addition of carburetor, starter, water pump, plug wires, and exhaust system (not included)
- Requires an externally balanced flywheel (not included)
- The 8-quart Circle Track oil pan is 8-inches deep at the sump. It will clear most GM rear-steer chassis with stock engine location
Note: This part number supersedes 809-19418602, 809-19370602, 809-19258602, & 809-88869602
Engine Break-In Procedure
Fill the engine with oil with 15w50 full synthetic motor oil and follow the proper engine priming procedure. Also check and fill as required any other necessary fluids such as coolant, power steering fluid, etc.
Run the engine between 2,000 and 2,500 rpm, with no-load for the first 30 minutes. Adjust the valve lash using the proper procedure. Drive the vehicle at varying speeds and loads for first 30 laps. Be sure not to use a lot of throttle or high rpm's. Run 5-6 medium-throttle accelerations to about 4500 rpm followed by letting off in gear and coasting back down to 2000 rpm. Run a couple of hard-throttle accelerations to about 5000 rpm followed by letting off in gear and coasting back down to 2000 rpm.
Change the oil and filter with 15w50 full synthetic motor oil and filter. Drive the next 25 laps without high rpm's (below 5000 rpm), hard use, or extended periods of high loading. Change the oil and filter again.
19434602 supersedes 19431602
does this engine have a roller tappet camshaft or a flat tappet camshaft? the tech specs say it has a flat tappet type camshaft while specs table says that the camshaft style is that of a roller tappet? what is the actual real true position.
The engine specs say it's internally balanced, yet the items you need say you need a external balanced flywheel? Do you or don't you ?
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