Page 70 of Buick Performance Parts Catalog by TA Performance

TIMING SETS 480-922-6807 Order and Tech Line www.TAPERFORMANCE.com TA Performance Products, Inc. 70 Stock Replacement Timing Chain and Gear Sets Performance Double Row Timing Sets Ideal for stock and mild re-builds or routine maintenance. Unlike original nylon coated cam gears these gear sets are all high tensile strength cast iron, for the utmost in durability. Original type nylon gears are prone to stripping as they get brittle with age. Part Nos. TA 1521 198-215-225-231(odd fire)-300-340-350 ... 39.95 TA 1522 400-430-455 ............................................ . 49.95 TA 1522NH 322-364-401-425 ........................... ........... $100.00 TA V1521 `78-`88,231-252 (even fire)........................ 39.95 TA 1522NH TA 1522 TAs performance and double row timing sets are made from high tensile strength cast iron, for the utmost in durability. These sets offer multiple position crank gears for advancing or retarding the camshaft. Recommended for most performance combinations. TA 1524 Series Tips When Using Multi-key Way Timing Sets Determine what position you will install the timing set either by degreeing the camshaft (preferred) or per cam card recommendations. Using 4 degrees advance as an example. First note there are 2 sets of markings; the inner markings are for the key ways and the outer markings are for the teeth. In essence the gear is machined to change the relationship between the key way and the tooth, in this case for 4 (out of 360) degrees advance. So by eye it will look like you are not changing by much, but again we are talking only 2-8 degrees out of 360. FIRST: Install and position the cam gear so the dot is at the 6 oclock position (pointing down) SECOND: Slide the gear on to the crank using the 4A key way THIRD: Rotate the crank as necessary so the 4 tooth (counter clockwise of the dot) is at the 12 oclock position (pointing up). The dot on the cam gear should be pointing at the 4 (advance) tooth on the crank gear. That is it, you are done, a very simple process Also note when you change the degree of the camshaft you are affecting valve timing in relation to the piston, you are NOT affecting ignition timing. Example Installation of 4 degrees advanced is circled on diagram. TA 1523 Series Similar +2 +2 +4 +4 +6 +6 +8 +8 -2 -2 -4 -4 -6 -6 -8 -8 A R 0 0 TA 1521B TA 1522NH 7KEY Single Row TA V1521B Part Nos. TA 1521B odd fire V6, 215-300-340-350, 3 Key Way .................... 79.95 TA 1522B 400-430-455, 3 Key Way ............................................. 110.00 TA 1522NH 7KEY 322-364-401-425, Single Row, 7 Key Way .................. 125.00 TA V1521B `78-`88, 231-252 even fire V6, 3 Key Way ................... 79.95 TA 1521 TA 1522B NOTE: Double Row Timing Sets, will not work with original spring tensioners used on 198, 225, 231 252 V6 engines.

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