6.2 vortec head torque setting?

[Lubak572]

I am putting heads on what was originally a 5.7 GSIPEFS motor that i converted to a 6.2 using a new 6.2 gm marine long block. Had to do a valve job on heads I am bolting them back on, service manual is at farm. I only have selected manual supposedly head torque is all at 22 foot pounds then 55 degrees for short bolts 65 medium and 75 large. I just put them at 55, 65, and 75 foot pounds using original bolts that came with new long block. They looked fine and only had 5 hours no load on trailer with muffs break in hours. Should I buy new bolts and a torque angle meter and redo heads, hopefully I didn't over torque. Nothing snapped or anything. I can get fel pro bolts for $30.

 

[Lubak572]

I am putting heads on what was originally a 5.7 GSIPEFS motor that i converted to a 6.2 using a new 6.2 gm marine long block. Had to do a valve job on heads I am bolting them back on, service manual is at farm. I only have selected manual supposedly head torque is all at 22 foot pounds then 55 degrees for short bolts 65 medium and 75 large. I just put them at 55, 65, and 75 foot pounds using original bolts that came with new long block. They looked fine and only had 5 hours no load on trailer with muffs break in hours. Should I buy new bolts and a torque angle meter and redo heads, hopefully I didn't over torque. Nothing snapped or anything. I can get fel pro bolts for $30.

 

[Scott Danforth]

The torque setting depend solely on which fasteners you bought

 

[Lubak572]

The torque setting depend solely on which fasteners you bought

I reused the stock ones supposed to be from new gm marine. I believe they are not torque to yield bolts. My question is if I over or under torqued them and should redo it with new bolts???

 

[Scott Danforth]

If you over-torqued them, did you damage the block threads or the bolts?

Bolt torque is listed as 65 ft-lb for an SBC. The extra 10 lb-ft should not be an issue, however not guaranteed.

 

[Lubak572]

If you over-torqued them, did you damage the block threads or the bolts?

Bolt torque is listed as 65 ft-lb for an SBC. The extra 10 lb-ft should not be an issue, however not guaranteed.

Not to my knowledge, I put short bolts to 55 #, med 65, large 75 carefully in stages with my digital snap on torque wrench. Seems fine just probably overthinking it. Tired of messing with this motor/boat. Want it done and forget about it.

 

[Bondo]

Ayuh,..... I'd just run it,......