Need professional help on torque aluminum heads on 302 motor
- Thread starter 5oh
- Start date
Torque on the heads can also be effected by what thread lube you use. Edelbrocks web site should give you the torque specs, but I'd go with what the manufacturer of the head gasket recommends. I've had problems in the past with using the bolt manufacturers specs and ended up crushing the gasket too much and causing future problems. Torque sequence should be the same as any other head.
Am using arp bolts for the aluminum edelbrock heads. I guess am going to go with trial and error, I constantly get different answers all the time. I even bought a haynes repair manual and nothing on torque cylinder heads. Never heard of crushing the head gasket but I'll keep that in mind. Heads go on my motor by the end of this week any suggestions just voice your opinion, thanks guys!
Start form the center top first, oil your new ARP bolts with the supply lube to included each washer, start with the top center and torque down to about 37.5fp, then do the center bottom, torque down 32.5fp, then move to the opposite to conner of the head and torque it down the same as you center top 37.5fp, move across to the opposite lower conner and do torque down to 32.5fp, and do the opposite conner and start again, do U follow me?
my first time doing heads, am tired of paying for labor. You seem very knowledgeable, I have a quick question for you. When I took off my rockers the exaust rr had shims. Now my question to you am I going to use the shims again on the aluminum heads or not and also should I torque them down if so how much?
U could try without them first and if your valves are not making noise your good to go, I would try to to start the engine without them first and make sure it reaches operating temperature, U may not need the shims, if by any chance your getting a valve tap, then your going to have to re-install them, it's better to have a tap, than to make your valves to tight and you end up wiping out your Cam lobs
What size are the bolts that hold down the pedestal to the head? if there 3/8", start at about 288 inch pound that = 24 foot pounds and work your way up to 336 inch pounds or 28 foot pounds, I also use Blue Lock tight on them as an extra measure, but that's just Me lol, are you runing a heafty cam on this car? if you are, them make sure U use some lock tight BLUE = medium set