how can you tell the diffrence?
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how can you tell the diffrence?
Between a regular 454 and a 454 mag, i have the black cap that goes over the carb, but it dosnt have any thing on its just plain black, the previous owner really didnt know just knew it was a 454
there any like special serial numbers or ways to tell with out having it dynoed
there any like special serial numbers or ways to tell with out having it dynoed
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Look at the intake runners , mag will be squared off and you cant see much of the head where the intake bolts up , non-mag has peanut port heads and you can see alot of the intake face side of the head , just for grins , look for the red sticker on the starboard (driver side) valve cover , if it says its 330hp its non-mag , 365/385 and its a magnum
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Agreed, I have a '96 7.4L and based on the block casting number, 10237297, it's a 4 bolt main. The biggest difference between the 7.4L (454) and the Mag is forged crank (and rods, I think), large port heads (rectangular GM vs. small port oval GM, both are cast iron) and tall intake.
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Agreed, I have a '96 7.4L and based on the block casting number, 10237297, it's a 4 bolt main. The biggest difference between the 7.4L (454) and the Mag is forged crank (and rods, I think), large port heads (rectangular GM vs. small port oval GM, both are cast iron) and tall intake.
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