4.8-5.3-6.0?
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Teching In
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4.8-5.3-6.0? My friend came across a motor for a truck with a magnuson supercahrger but the guy who owned it was not sure what motor it was. Would there be anyways to tell maybe from casting numbers or external differences? I know a t is a 5.3 liter and a z is a 4.8 liter but it doesnt have a vin number. Thanks guys. Claims to be out of a joe gibbs silverado. When i looked on line they came in both motor set ups? Any help would be nice
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Teching In
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A 6.0 will have 035 or 317 casting cylinder heads and a 5.3/4.8 will have 862 or 706. To tell the difference between the 5.3 and 4.8 you will need to pull the oil pan to check the stroke of the crank(3.622 = 5.3/3.268 = 4.8) or pull the head off to check the piston(flat top = 4.8/dished = 5.3). You may be able to look in the spark plug hole and see the top of the piston. I have never tried it myself, but I have seen others recommend it.
As far as I know they only did the Joe Gibbs package on the 4.8 motors. This makes sense, since none of the rest of the drivetrain was upgraded. BTW, I don't know of any external way to tell a 4.8 from a 5.3.
Thread Starter
Teching In
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Cool, im going to pull off the super charger this weekend and start bolting up the intercooler and pump. If someone connects the ecm up to a computer would it give them the info of the motor? I think its going to be a 4.8 liter
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Verdad Gallardo It is but the 5.3 and 4.8 use the same block, so the back is stamped with 4.8/5.3. Plus I wasn't sure if he was trying to identify it with the tranny bolted up so I gave him the head casting numbers.
