Ford 144-250 inline 6 high performance building
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To use the 302 intake valve springs, start with 12 stock 302 intake outer retainers. Then take 12 stock 144-250ci 5/16" inner retainers and place them in the 302 outer retainers. Finally, you use the 144-250ci valve locks on the valve stem. Now you have a 5/16" retainer to mate the 144-250ci valves to the 302 intake springs. | To use the 302 intake valve springs, start with 12 stock 302 intake outer retainers. Then take 12 stock 144-250ci 5/16" inner retainers and place them in the 302 outer retainers. Finally, you use the 144-250ci valve locks on the valve stem. Now you have a 5/16" retainer to mate the 144-250ci valves to the 302 intake springs. | ||
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+ | Thanks to vintage inlines there is also another option which is dual valve springs which report Specs: closed 110 lbs, open 260 lbs, inst hgt 1.68, duration up to 280. All other specs are user verified. | ||
==Induction== | ==Induction== |