Thread: rebuilding 402 need some advice

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i can not add to much but i deal with warehouse.s and a dealer for many parts so i get what i like to use when i am building a engine not just machining it .that parts you should stay away from ? for this build most name brand parts are fine . on the cam ....roller is the only way and there many ways to go here .i do not use much of comp cam stuff . the roller lifters are only made by a few lifter companys so there alot of rebox sometimes at ends up to who.s sticker you like more in the box lifter.s. in many case.s . but there no easy way out on pushrods you buy a kit use another brand of roller rockers . your pushrod can be wrong . i never buy cam KITS with push rods less a bone stock engine . i only buy push rods that fit the engine at time of build as to what real push rod it needs .this is done by checking the pushrod length one way is a mild lift check .i do all engine i build less it,s a bone stock build . like jerry said you could be better off in the long run with a 454 mark 6 roller block? sell the 402 but you did not ask that .your old 402 may have value to some one looking to build a number .s matched 402 but still many 396/402s out there. your.s is a low out put engine and the mark 6 454 still fits in many newer trucks so the core price is much more on the 454 and the cost of the new gasket kit is more on the 454 mark 6 so in the long run a 454 would be one way to go it will not be less money .i built many of both engines. machine work needs to be right you want the block tru deck . if your shop can do that you want the piston at 0 deck to .010 in the hole this has some what to do with head gaskets on how thick .039 to.050+ they are.keep away from a old tin steel shim Gm gasket there many head gaskets.there are better then them . many are grafoiled coated or blue perma torque FELpros used 100s of them over the years work very well if the finish is good on heads and block deck .the fast way to build CID with is engine is by using a 454 crank 4.000 and KB sells a piston for the swap get it to around 427 this may be one way to go if your crank needs work