zr1 32 16 405

i rebuilt the stock 305 heads and was wondering wat the spec torque sequence was

deadtrend1

iTrader: (1)

it would tell you in a haynes manual .. torque specs and sequence is the only thing those books are good for.

89WS-6

I dont know the torque specifications of the top of my head but I do know, that if you are looking at the head with the exhaust ports pointing at you, start with the bolt in the middle of the head at the top and swirl yourself out ward. Thats the way. Hope that makes sense.

Tom91Bird

iTrader: (5)

Don't forget to step torque them either. I usually go about 20, 40, 60, then finally 70-75ft/lbs.

RBob

iTrader: (1)

The final torque is 65-68 ft/lbs. Sequence is as follows (attahed pic).

RBob.

AJ_92RS

Don't forget thread sealer.

zr1 32 16 405

thanks, i got the intake manifold off, i spent more time labeling all those dam vacumm tupes and egr crap than anything else.

ZRATED

Yea im in the same boat, but in installing ported TPI heads with new intake.
I looked at the haynes manual and it says to torque them down at 65 ft lbs but other people tell me to torque them down at 70 or so which would be better?


Michael

deadtrend1

iTrader: (1)

if the new intake is aluminum .. dont over torque them. Go the rated route