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i have an extra 460 that came with my truck i am planning on swapping them. other than pulling the oil pan and looking at the bottom end is there anything else i should do before doing the swap? cam timing? or anything
depends on what year the engine is first off. the early ones don't need a different timing chain. (it's cam timing they are talking about) basically buy an aftermarket double roller timing chain and install it straight up (zero position on the gears) and this will give you back the correct cam timing. might not be a bad idea anyway depending on mileage because a lot of the factory timing sets used Nylon gears and over the years those get brittle and break or the chain maybe stretched etc so if nothing else at least pull that timing cover and look at it (gaskets are cheap)
if it is a double roller aftermarket chain it will have 3 or more positions on it, check teh instructions but most have a 0 setting and you just line that mark up with the timing mark on the cam gear and that should be straight up.
Just out of curiosity, isn't the timing mark on the straight up set use the same location on the cam gear, just in a different spot on the crak gear? And the stright up set has the mark located in line with the crank key. So if that were the case, couldn't you just move the crank slightly until the keyway lines up with the cam gear mark? I know it's not the best way do do it, but was just thinking that if the chain was fairly new, then why spend the extra $$ to get a different chain set that had a re-indexed mark. Thoughts, or am I just being a cheapie???
They used D1VE blocks from 71 until 78 and the D3VE heads were used from 73 until the switch to FI in 87 (some did have F5 casting number but from what all appearences are identical to D3 heads)
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