Page 27 of Buick Performance Parts Catalog by TA Performance

On 400-430-455 models, check for proper clearance with the rod bolt nut and the counterbore on the rod cap. If there is interference, it will cause the cap to shift when the nut is torqued. When reconditioning the rods with ARP rod bolts check for this condition and correct by spot facing with a 21/32 counter bore as needed. V6 Main Bolt Kits TA offers replacement main bolts that are far superior in strength over OEM main bolts. High Performance Series main bolts are forged from 8740 chrome moly and include such desirable features as generous under-head radius and rolled threads for the utmost in reliability. These bolts provide a nominal rating of 170,000 psi, and are 1000% less prone to fatigue as compared to stock bolts because of the unique process of rolling the threads after the heat treating process. Pro Series main bolts incorporate all the key features of the High Performance Series but are rated at a higher 190,000 psi. Part Nos. TA V1122 Stage I, 4-bolt main, High Performance Series .................................................... $ 47.00 TA V1122A Stage II, MBK, High Performance Series ............................................................. $ 45.00 TA V1122B Stage II, Pro Series .............................................................................................. $100.00 One of the first upgrades that should be done for any engine rebuild is the use of performance rod bolts. Rod bolts see the most severe abuse of all engine hardware, and they also cause the most damage when they fail. TAs performance rod bolts help to ensure against catastrophic failure, they are made from 8740 steel for the ultimate in durability. A must for any stock or performance upgraded engine. Black Oxide coated for corrosion resistance. TA 1646 TA 1648 Series TA 1647 Series TA 1649 TA 1645 V8 V6 Connecting Rod Bolts Part Nos. TA 1645 264-322-364-400-401-425-430-455 ......... 70.00 TA 1646 `73-`81 350 Capscrew .............................. 85.00 TA 1647 `66-`72 340-350 (.345 diameter) .............$116.75 TA 1647A `66-`72 340-350 (oversized .358 dia) ...$116.75 TA 1648 V6 1.70 Long ........................................... 86.99 TA 1648A V6 1.50 Long ........................................... 69.95 TA 1649 `64-`67 300 ............................................... 70.00 TA 1649A `61-`63 215 Rover 3.5L V8 .................... 70.00 Before After HARDWARE FASTENERS www.TAPERFORMANCE.com TA Performance Products, Inc. 480-922-6807 Order and Tech Line 27 V6 Billet Main Caps .345 .358 Oversized TA 1647 series `66-`72 340-350 Measuring Bolt Diameter For Diagram is for descriptive purposes only. Billet main caps can extend the life of your Buick V6. Recommended for combinations of 450 HP or more. Available for all four caps or just the front three. Please call for additional information. Part Nos. TA V1102D V6 Buick, #4 Billet Steel 2 Bolt Rear Main Cap............................................. $256.00 TA V1102A V6 Buick, #2 #3 Billet Steel 2 Bolt Center Main Cap Set........................... $145.00 TA V1102C V6 Buick, #1 Billet Steel 2 Bolt Front Main Cap............................................ 75.00 TA V1102B V6 Buick Stage2, #2 #3 Billet Steel 4 Bolt Splayed Center Main Cap Set. $200.00 Replacement Caps Also Available for TA V3800 Cylinder Blocks, Please Inquire

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