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TBI Throttle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.

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Old 01-31-2003, 01:46 AM   #1
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head bolt torque sequence?

i rebuilt the stock 305 heads and was wondering wat the spec torque sequence was
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Old 01-31-2003, 09:46 PM   #2
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it would tell you in a haynes manual .. torque specs and sequence is the only thing those books are good for.
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Old 01-31-2003, 10:02 PM   #3
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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.
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Old 01-31-2003, 11:28 PM   #4
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Don't forget to step torque them either. I usually go about 20, 40, 60, then finally 70-75ft/lbs.
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Old 02-01-2003, 12:08 AM   #5
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The final torque is 65-68 ft/lbs. Sequence is as follows (attahed pic).

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Old 02-01-2003, 01:01 AM   #6
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Don't forget thread sealer.
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Old 02-01-2003, 03:08 AM   #7
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thanks, i got the intake manifold off, i spent more time labeling all those dam vacumm tupes and egr crap than anything else.
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Old 02-08-2003, 12:22 AM   #8
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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?


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Old 02-08-2003, 11:55 PM   #9
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if the new intake is aluminum .. dont over torque them. Go the rated route
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Old 02-08-2003, 11:55 PM
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