Using the Classification Chart:

Simply move your cursor across the chart. Anywhere the chart turns yellow, you can click and get information.
If you click on a cell in the chart that has the power-to-weight factor (numbers in the cells in the middle of the chart), you will open a page that shows you all the classes for the car (left-hand column) and engine (top columns) combination.
If you click on some of the cells at the top of each column that describe the engine, you will open a page that show the engine tech specs, or blueprint information.
If you click on one of the cells in the left column that shows the car description, you will open a page that shows information about that car-model-body style.
If you want to learn more about the classification process, click here.

MALIBU 1978
	200	231	231	305	305	305	350	350	350
	95hp	105hp	105hp	145hp	145hp	145hp	175hp	175hp	175hp
St=Stock, SS=Super Stock		Stk	SS	Stk	Stk	SS	Stk	Stk	SS
Transmission	All	All	All	Man	Auto	All	Man	Auto	All
Notes - See below							1	1	1

MALIBU 108.1" wb
Coupe 2 Dr	25.11	23.20	22.34	17.50	18.10	16.58
Sedan 4 Dr	25.18	23.26	22.40	17.54	18.14	16.62
Station Wagon 2S	26.45	24.45	23.54	18.39	19.02	17.42	12.54	12.54	11.67
MALIBU CLASSIC 108.1" wb
Coupe 2 Dr	25.35	23.42	22.55	17.65	18.26	16.72
Sedan 4 Dr	25.46	23.52	22.65	17.73	18.34	16.79
Station Wagon 2S	26.67	24.63	23.72	18.54	19.18	17.56	12.64	12.64	11.77
EL CAMINO 108.1" wb
Pick-up 2 Dr	25.70	23.74	22.86	17.89	18.51	16.95	12.20	12.20	11.36

Stock/SS Factors	120	130	135	180	174	190	270	270	290
				06/02/03	01/01/22		01/01/21	01/01/21	05/30/02
Stock/SS Factors w/Rep Heads							275	271	300
							01/01/21	01/01/21	01/01/18

CHEVROLET 1978 1/1/2021

Notes:

1 - Accepted Replacement heads: RHS Cast Iron Heads #12400 & #12402. Dart Cast Iron Heads casting nos. 10021070 & 100220010. World Products Cast Iron Heads casting nos. 043600 & 043610. Edelbrock heads #60887, 60637.