Originally Posted by mistagoodbadguy
hey guys im just wondering if you can help i need a list of what products i will need to rebuild my 400 and im trying to save every penny i can this is what i have so far
my question is do i realy need to spend the extra money on plumbers tape, gasket sealer? cant i use gasket maker?? is moly lube a must for the cam as well? i just figure its a good idea for break in even tho iv heard assembly lube will work fine as long as its not sitting long
I prefer Teflon plumbers joint paste to Teflon tape, this is used to seal those bolts that enter into coolant jackets or into the oily interior. It provides both a thread sealant and lubricant the latter being about the same lubricity as engine oil which the OEMs use to compute their bolt torques. Different lubricants on the threads such as moly paste or a lack of cleanliness or dry threads will produce different amounts of clamping force in the fastener for the amount of torque indicated on the wrench. The moly past will stretch the fastener too much for the indicated torque while dirty, damaged, or dry threads will not produce enough stretch in the fastener for the indicated torque, the former condition risks breaking the fastener, the latter will leave it loose though it will appear tight.
For cam lube I'd use what the cam manufacturer recommends and follow thier directions to the letter, wiping out a cam is very easy to do if you don't follow along with great care.
Assembly lube is for bearing surfaces other than the cam lobes unless it's a roller cam but even then I'd go with the cam makers recommendations.
If the part surfaces are remachined there should be no need for gasket maker other than hi-temp silicon rubber and maybe some non-hardening Permatex; this stuff being useful in the corners where of the intake meets the heads and china wall, and where the oil pan mates with the rear main cap and front timing cover.
Anti-seize is useful where steel bolts go into aluminum as a corrosion preventative. Bolts into aluminum should not be cad plated or galvanized, either bare steel or stainless steel. Cad and galvanize likes to trade electrons with steel and aluminum which corrodes these materials together. Aluminum parts also need hardened washers between the bolt head and the aluminum part to keep from squishing the softer aluminum when tightening the fastener.