Re-torque bolts after initial heat cycles.
09-08-2008, 02:52 PM
#1
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Car: 83 Z28
Engine: 406
Transmission: T56
Axle/Gears: 9" with 4.10s
Re-torque bolts after initial heat cycles.
I know that you are supposed to re-torqe bolts after the first few initial heat cycles and engine break-in, especially with aluminum heads. Do they expect you to pull the motor? How are you supposed to get to the head bolts with headers on? I talked to someone at ARP and they said you should back them off slightly, and then torque.
Same thing with the headers? If I remove the header, the technically would I have to go through another couple heat cycles and torque them again?
I plan on doing the initial break in w/o the trans attached. Any arguments against this?
Same thing with the headers? If I remove the header, the technically would I have to go through another couple heat cycles and torque them again?
I plan on doing the initial break in w/o the trans attached. Any arguments against this?
09-08-2008, 03:48 PM
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Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: Re-torque bolts after initial heat cycles.
Retorquing the head bolts isn't required, unless the head gasket manufacturer specifically indicates otherwise. I'd actually avoid doing it since it tends to disturb the sealant on the head bolts.
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