help needed please! I am wanting to gas flow a head that i believe is for an L4 block. (it has the oil drain fitted to it as does the L4 block.) The head bears the following numbers 71981533. … I am hoping to run it with a pair of twin 40 webers and a combined intake and exhaust manifold. How much work can this head take before going through to the water jacket??? How close is it to a 180 sport head. ?

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Join Date: 9 December 2019

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help needed please! I am wanting to gas flow a head that i believe is for an L4 block. (it has the oil drain fitted to it as does the L4 block.) The head bears the following numbers 71981533. … I am hoping to run it with a pair of twin 40 webers and a combined intake and exhaust manifold. How much work can this head take before going through to the water jacket??? How close is it to a 180 sport head. ?

27 June 2020, 03:15 PM

help needed please! I am wanting to gas flow a head that i believe is for an L4 block. (it has the oil drain fitted to it as does the L4 block.) The head bears the following numbers 71981533. … I am hoping to run it with a pair of twin 40 webers and a combined intake and exhaust manifold. How much work can this head take before going through to the water jacket??? How close is it to a 180 sport head. ?

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