Crouchy 2 Posted January 20 Hi dudes. I am replacing the injection with a carby and want to put an early water pump and fan on an EFI 302 for my early Falcon. I know that this will mean the pump will run in the opposite direction to the serpentine belt. Does anyone know if this will affect the cooling ie will it run hotter? cheers Share this post Link to post Share on other sites
deankxf 20,937 Posted January 20 1 hour ago, Crouchy said: Hi dudes. I am replacing the injection with a carby and want to put an early water pump and fan on an EFI 302 for my early Falcon. I know that this will mean the pump will run in the opposite direction to the serpentine belt. Does anyone know if this will affect the cooling ie will it run hotter? cheers @Thom may know for certain, but if you are ditching the serpentine belt setup for V belts, (this needs confirming) i thought you just buy an early water pump for V belts and it will be good to go assuming you have all the brackets and pulleys for the V belts. 1 1 Thom and Crouchy reacted to this Share this post Link to post Share on other sites
Thom 6,708 Posted January 20 Hi dudes. I am replacing the injection with a carby and want to put an early water pump and fan on an EFI 302 for my early Falcon. I know that this will mean the pump will run in the opposite direction to the serpentine belt. Does anyone know if this will affect the cooling ie will it run hotter? cheersYes it will run hot if you spin the water pump backwards, the design of the impeller and timing cover are both to suit the reverse rotation water pump and will cavitate the water rather than pump when spun backwards, to go to standard rotation you need a pre 86 timing cover, water pump and balancer (balancer needs to be 58ounce imbalance as you have a roller cam engine, if you use a 28ounce early balancer then engine will vibrate and possibly damage the crank, you also have to use a flywheel or flex plate to suit the roller cam engine, 1986 was when the 5.0l went to 58ounce balancer and flywheel/flexplate) the early timing cover, water pump and balancer also means you will need an early alternator bracket, be aware the v belt setup makes a windsor longer than the serpentine setup but that's not a problem in an early falcon 1 deankxf reacted to this Share this post Link to post Share on other sites
deankxf 20,937 Posted January 20 Thom, still the legend when it comes to hotrodding different engine combos! Share this post Link to post Share on other sites
Crouchy 2 Posted January 21 (edited) Cheers guys Edited January 21 by deankxf spelling fixed 1 deankxf reacted to this Share this post Link to post Share on other sites
Rod Racer 302 Posted January 21 7 hours ago, Thom said: Yes it will run hot if you spin the water pump backwards, the design of the impeller and timing cover are both to suit the reverse rotation water pump and will cavitate the water rather than pump when spun backwards, to go to standard rotation you need a pre 86 timing cover, water pump and balancer (balancer needs to be 58ounce imbalance as you have a roller cam engine, if you use a 28ounce early balancer then engine will vibrate and possibly damage the crank, you also have to use a flywheel or flex plate to suit the roller cam engine, 1986 was when the 5.0l went to 58ounce balancer and flywheel/flexplate) the early timing cover, water pump and balancer also means you will need an early alternator bracket, be aware the v belt setup makes a windsor longer than the serpentine setup but that's not a problem in an early falcon 50 ounce imbalance, not 58. I have several of these engines. 1 Crouchy reacted to this Share this post Link to post Share on other sites
Thom 6,708 Posted January 21 50 ounce imbalance, not 58. I have several of these engines.You are correct, I probably should have spell checked 1 Rod Racer reacted to this Share this post Link to post Share on other sites
SPArKy_Dave 9,303 Posted January 21 Can confirm, as I own an October 86' F250 302W, with factory flat tappet cam block, and v-belts. Not sure on the balance spec's though. 1 Rod Racer reacted to this Share this post Link to post Share on other sites
Rod Racer 302 Posted January 21 3 hours ago, SPArKy_Dave said: Can confirm, as I own an October 86' F250 302W, with factory flat tappet cam block, and v-belts. Not sure on the balance spec's though. All factory 5.0L engines mid 1981 and later were 50 oz balance, both the earlier (pre '85) flat tappet and roller engines. 5.8L engines, flat tappet and hyd roller are still 28 oz. 1 SPArKy_Dave reacted to this Share this post Link to post Share on other sites
Rod Racer 302 Posted January 21 5 hours ago, Thom said: 5 hours ago, Rod Racer said: 50 ounce imbalance, not 58. I have several of these engines. You are correct, I probably should have spell checked All good, Mate, figured it was a typo. Share this post Link to post Share on other sites
