Lower intake manifold retorque

[BaBiLuTH]

Hey, I have an 88 5.0 and have a sorta weird question. My question is about torqueing the lower intake manifold. I am about to install Gt40 heads and Gt40 upper and lower intake manifold and am concerned about the torque. My friend and I replaced his head gaskets last week on his 5.0 and after I was done torqueing the lower intake manifold, I went to go recheck the torque with the torque wrench and found that the bolts had to be torqued again. I torqued them down and recheck and found that the passeneger side bolts were still not torqued but the drivers side ones were. I continued with the torque sequence again (never loosening the bolts, just continuing) and after rechecking again, I found the the passenger side bolts needed to be tightened again as the drivers side was tight. I did this step about 4 times all together and then just left the bolts alone. To me I dont think that the bolts were stretching or anything like that, should I have continued torquing or sound I have stopped? I dont want to run into this problem with my car but if I do what should I do? Please let me know as I'm starting this prject very soon. Thank you.

 

[TT91]

do you know the torquing sequence?

 

[Blk91stang]

Do the torquing sequence and keep going over and over them until their all about the same. When I did my lower intake, I had to do the whole thing about 10 times before all of them tightened up equally at the torque setting. You don't want any bolts loose...

 

[5spd GT]

On my intake I have had to do them 6 or 7 times in the proper torque sequence. I go by feel...

 

[Mavrick]

I did mine 3-4 times over at 22lbs or so.

 

[RYC CUKR]

Same thing here. And after a few heat cycles I go back pull the upper and check the torque on them again.

 

[5spd GT]

The bolts will get loose after some heat cycles and some settling.