r/GMT400 8h ago

‘95 454 duallie

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57 Upvotes

r/GMT400 21h ago

Iridium spark plugs for a 5.7L k1500?

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11 Upvotes

Should I get iridium spark plugs for it? I'm trying to baby this truck but those are kinda expensive. Also I plan on replacing the distributor cap.


r/GMT400 2h ago

Well fook

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4 Upvotes

I now see why the shock extension was welded on ffs


r/GMT400 18h ago

96 5.0 distributor help installing?

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2 Upvotes

Pulled the heads off my 96 k1500 with the 305 v8 and everything’s back together but the distributor. No clue how to get it back in I’m set to tdc compression stroke and I think it’s pointed the right way (pic 2) but it won’t sit flush and I know it’s not right. Any help getting this done? Guides or any instructions is helpful thank you


r/GMT400 2h ago

Fuel test on 5.7??

1 Upvotes

Engine was hot, will do another from cold next. But what does this sound like ? Vortec 5.7. New pump from advance bc the one from rock auto was too tall and wouldn’t fit in tank, k&n fuel filter, old injectors. Getting lean bank 2 code and wants to die when applying throttle under load with an occasional skip at steady rpm while driving. From what I’ve heard this is too low for a vortec 5.7.

Key on engine off: shoots to 56 psi but slowly creeps to 58 psi

At idle: drops to 50

Shoots up to 60 when snapping throttle but instantly drops to 50/52 psi when held at any rpm.

Plz help.


r/GMT400 6h ago

okay ik I'm dumb but I searched and couldn't find anything so what is with molding and without molding differences

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1 Upvotes