94 gmc 454 manifold replacement

[Genvmaniac]

after lurking on here some 3-4 years I finally need to ask. My manifolds are leaky at the y pipe. Makes sense since there held on my 3 c clamps. So here’s my question. I have 2-3 broken manifold bolts going into the head. Every single one broken at the y pipe. I have new manifolds already that Ive been sitting on for some 3 years now. My question is since I’m in the rust belt and these bolts haven’t been touched since 94, should I replace junk with junk (manifold replacement) or spend the extra cash for headers. Either way I use the truck for towing and as a daily. so any help is wanted

 

[Cadillacmak]

after lurking on here some 3-4 years I finally need to ask. My manifolds are leaky at the y pipe. Makes sense since there held on my 3 c clamps. So here’s my question. I have 2-3 broken manifold bolts going into the head. Every single one broken at the y pipe. I have new manifolds already that Ive been sitting on for some 3 years now. My question is since I’m in the rust belt and these bolts haven’t been touched since 94, should I replace junk with junk (manifold replacement) or spend the extra cash for headers. Either way I use the truck for towing and as a daily. so any help is wanted

Good long tube headers will help with towing for sure. Large tube, 304 stainless, 3inch collector.

 

[Genvmaniac]

Good long tube headers will help with towing for sure. Large tube, 304 stainless, 3inch collector.

Any idea about milage though? I’m all for it I just don’t want to rip these damn things apart and have to spend even more money on stuff. I’m already bookoo bucks into this truck

 

[Cadillacmak]

MPG or how long they will last? Every big block I have ever had got the same MPG no matter what I did, but if your talking how long they will last, that's why I noted 304 stainless if your in the rust belt. Use stainless bolts with high temp locktite and copper gaskets.

 

[Genvmaniac]

MPG or how long they will last? Every big block I have ever had got the same MPG no matter what I did, but if your talking how long they will last, that's why I noted 304 stainless if your in the rust belt. Use stainless bolts with high temp locktite and copper gaskets.

Thank you, and yea I was wondering about longevity. Thank you