I'm starting to put a new crate 350 in my 84 GMC. The last engine I put in I had trouble with the thermostat housing leaking. Also the front bolts in the intake leaked coolant. I want to end this problem with the new engine. The last engine I used new ARP manifold bolts and used thread sealer on all bolts going into a water passage. I also swapped the t-stat housing and I still had coolant leaks. This time around I have an o-ring type t-stat housing and new ARP bolts. I have had the suggestion to use stock Chevorlet manifold bolts but no other suggestions.


Thanks

Lon