"the Fel pro head gaskets supp
"the Fel pro head gaskets supplied to me by F.B.O.systems Portland are performance marine #17048. and the installation tips say that the gaskets are ok to fit as they are for mk 1v truck and bow tie race blocks, if they are to be used on mk 1v passenger and hi performance blocks they need additional coolant holes adding one at each end of the gasket, has any one ever heard this before. What i need to know is can anyone tell me which block mine is ?.i know its a mk iv, engine # od616514.it is fitted with JE Pro 700 pistons, boat is a 1991 formula ls 242.thanks Ged"
"the Fel pro head gaskets supplied to me by F.B.O.systems Portland are performance marine #17048. and the installation tips say that the gaskets are ok to fit as they are for mk 1v truck and bow tie race blocks, if they are to be used on mk 1v passenger and hi performance blocks they need additional coolant holes adding one at each end of the gasket, has any one ever heard this before. What i need to know is can anyone tell me which block mine is ?.i know its a mk iv, engine # od616514.it is fitted with JE Pro 700 pistons, boat is a 1991 formula ls 242.thanks Ged"

