[kitcarbp]

SPEEDWAY PJ, The 429/460 are the 385 series engines. If the inlet was angled differently on 69 vs 70 years it should not affect anything as far as pump operation, so my bet is yes you can use it. Perhaps they changed it for the better to get higher flow rates by angling down to say approx 4 o'clock ???? However, I would consult the folks at Stewart Components they are water pump gurus and may be able answer your questions. I have the Edelbrock AL pump that is sold by Ford Racing on the 460 crate engine and is advertised to have higher flow than OEM Ford pumps. Check my gallery I graphed out the performance of the Edelbrock pump with data provide to me from Edelbrock tech line. I used 2-sheave March pulleys but you can also use 460 truck pulleys from the 80's/90's that is Serpentine and better choice (cheaper, quieter, and better) than old school V belts. I went with March for the BLING effect. Make sure when you pick your pulleys that u are overdriving your water pump by at least 10%, 20%-25 is better for low speed cruising and cooling, measure your pulleys to be sure.