Fits 1963-64 Full Size Ford Exhaust Manifold Bolt Locks FML001S PERFORMANCE-EXHAUST pump bypass pressure is adjustable

pump bypass pressure is adjustable from 8-16 psi

7L V8 1977 - 1979 Pontiac Phoenix 305/5L V8 1975 - 1978 GMC K25 400/6

9L V8 1967 - 1970 Fargo A108 Van 318/5

7 V8 1981 - 1985 Chevrolet C20 Suburban 305/5 V8 1980 - 1985 Chevrolet C30 350/5

Brand  Interchange Part Number Dodge 4581 703AF Chrysler 4581 705AE Dodge 4581 705AE Chrysler 4581 705AI Dodge 4581 705AI Chrysler 4581 707AF Dodge 4581 707AF Chrysler 4581 727AA Dodge 4581 727AA Chrysler 4581 729AA Dodge 4581 729AA Chrysler 4581 731AA Dodge 4581 731AA Chrysler 4581 731AB Dodge 4581 731AB Dodge 4581 731AC Chrysler 4581 733AA Dodge 4581 733AA Chrysler 4581 733AB Dodge 4581 733AB Chrysler 4581 735AB Dodge 4581 735AB Chrysler 4581 737AA Dodge 4581 737AA Chrysler 4581 737AB Chrysler 4581701AE Dodge 4581701AE Chrysler 4581701AI Dodge 4581701AI Chrysler 4581703AF Dodge 4581703AF Chrysler 4581705AE Dodge 4581705AE Chrysler 4581705AI Dodge 4581705AI Chrysler 4581707AF Dodge 4581707AF Chrysler 4581727AA Dodge 4581727AA Chrysler 4581729AA Dodge 4581729AA Chrysler 4581731AA Dodge 4581731AA Chrysler 4581731AB Dodge 4581731AB Dodge 4581731AC Chrysler 4581733AA Dodge 4581733AA Chrysler 4581733AB Dodge 4581733AB Chrysler 4581735AB Dodge 4581735AB Chrysler 4581737AA Dodge 4581737AA Chrysler 4581737AB Chrysler 4581 701AE Dodge 4581 701AE Chrysler 4581 701AI Dodge 4581 701AI Chrysler 4581 703AF Dodge 4581 703AF Chrysler 4581 705AE Dodge 4581 705AE Chrysler 4581 705AI Dodge 4581 705AI Chrysler 4581 707AF Dodge 4581 707AF Chrysler 4581 727AA Dodge 4581 727AA Chrysler 4581 729AA Dodge 4581 729AA Chrysler 4581 731AA Dodge 4581 731AA Chrysler 4581 731AB Dodge 4581 731AB Dodge 4581 731AC Chrysler 4581 733AA Dodge 4581 733AA Chrysler 4581 733AB Dodge 4581 733AB Chrysler 4581 735AB Dodge 4581 735AB Chrysler 4581 737AA Dodge 4581 737AA Chrysler 4581 737AB Chrysler 4581701AE Dodge 4581701AE Chrysler 4581701AI Dodge 4581701AI Chrysler 4581703AF Dodge 4581703AF Chrysler 4581705AE Dodge 4581705AE Chrysler 4581705AI Dodge 4581705AI Chrysler 4581707AF Dodge 4581707AF Chrysler 4581727AA Dodge 4581727AA Chrysler 4581729AA Dodge 4581729AA Chrysler 4581731AA Dodge 4581731AA Chrysler 4581731AB Dodge 4581731AB Dodge 4581731AC Chrysler 4581733AA Dodge 4581733AA Chrysler 4581733AB Dodge 4581733AB Chrysler 4581735AB Dodge 4581735AB Chrysler 4581737AA Dodge 4581737AA Chrysler 4581737AB Chrysler 4581 701AE Dodge 4581 701AE Chrysler 4581 701AI Dodge 4581 701AI Chrysler 4581 703AF

Fits 1963-64 Full Size Ford Exhaust Manifold Bolt Locks FML001S PERFORMANCE-EXHAUST pump bypass pressure is adjustable427 Ford with cast iron headers only Application: Year Make Model 1963 1964 Ford Customline 1963 1964 Ford Crestline 1963 1964 Ford Mainline