2.3L ('83-'97) Head bolt torque -- how bad did I screw up?

[SenseAmidMadness]

Made a silly mistake in swapping my 1995 2.3 head gasket.

New Fel-Pro head bolts and head gasket. Threads were dry with no sealant though the bolt holes weren't perfectly dry.

I accidentally read an older service manual and torqued all the head bolts in 2 stages to 50 and then 90 foot-pounds.

Looked it up, and Fel-Pro as well as a ton of other places say I should have done the revised torque spec of 51 foot-pounds and then 90 degrees.

How big of a whoopsie? Do I need to get another set of head bolts and another head gasket and try again?

 

[SenorNoob]

So the real question is why was the spec changed?

Are different bolts listed for the earlier spec?

 

[SenseAmidMadness]

So the real question is why was the spec changed?

Are different bolts listed for the earlier spec?

I believe so, yes. Forum wisdom says that the original bolts were not torque to yield and could be reused, and sometime in the 90's a new TTY bolt replaced it.