What year is the wore out old motor? Look on the head under the valve cover and post the casting number. If you have a 76cc chambered head KB106 flat top pistons at $289.95 will work. Summit Racing Sum-K00052 cam and lifter set at $133.95. Weiand 8125 - Weiand Street Warrior intake Manifolds - Overview - SummitRacing.com
Weiand Intake at 149.95. Rebuild your carburetor. Have your block cleaned and bored .030 and replace cam bearings. Have your heads checked get a good valve job. If they want more than $300 to rework your heads, Summit Racing has a new set SUM-152123 for $309.95. Have your crank checked if it's good have it polished. If bad here's your crank http://www.summitracing.com/parts/ESP-103503480/
at $179.95 Get your King Engine Bearings MB557HP - King HP-Series Main Bearings - Overview - SummitRacing.com
main bearings at $60.95 and King Engine Bearings CR807XPN - King XP-Series Rod Bearings - Overview - SummitRacing.com
rod bearings at $66.95 and a Summit Racing SUM-G2600 - Summit Racing® Gasket Sets for Small Chevy - Overview - SummitRacing.com
at $29.95 you are ready.