V8 ZR2 Build Help

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03-04-2019, 05:04 PM

Dannyn01

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V8 ZR2 Build Help

So I’m getting ready to do the 5.3 swap in my 04 Blazer ZR2.. was wondering what oil pan works, since it is a 4x4. I tried doing a little research and I saw someone sayin the Hummer H2 Oil Pan fits? How true is that...

( I’ll be asking more questions as I think of them )
thanks in advance!!

03-05-2019, 06:47 AM

chevyriders

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Unsure about the h2 pan, but there are quite a few aftermarket pans made for the swap. They seem to run close to 400$ though

03-05-2019, 08:55 AM

eshaw

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I hope for your sake this isn't your first rodeo! The swap is expensive and can be complicated for a first timer.

03-05-2019, 09:00 AM

PAblazerboy2000

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I bought a hamburgers performance oil pan off eBay, but summit and Jegs got them, and it fits like a glove, no modification

03-05-2019, 06:05 PM

Dannyn01

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Quote:

Originally Posted by eshaw

I hope for your sake this isn't your first rodeo! The swap is expensive and can be complicated for a first timer.

It sure is my first time. I’ll get it done eventually, as far as price goes, I’m in the land of no return so whatever it is, it is

Quote:

Originally Posted by PAblazerboy2000

I bought a hamburgers performance oil pan off eBay, but summit and Jegs got them, and it fits like a glove, no modification

thanks! Went ahead and ordered the Hambuger one. There goes $375. The red is so worth the price...

03-05-2019, 09:12 PM

blazen_red_4x4

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From my research on the subject so far, the best budget option is a modified stock truck cast pan. Have to notch it out and tig weld it back together.

The H2 pan still has clearance issues if I'm not mistaken and isn't just a direct bolt-on.

03-06-2019, 07:38 PM

Dannyn01

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Just thinking ahead now. Since I’ll have to make it get an exhaust made, will it be worth while to keep the cats in or just go straight from the headers back with some sort of muffler? Will this thing pass emissions without them? I highly doubt it but I’m not 100% sure...

03-06-2019, 07:48 PM

DonL

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Might want to see if its legal to run without cars first... I know where I am, its illegal

03-06-2019, 08:28 PM

Dannyn01

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Quote:

Originally Posted by DonL

Might want to see if its legal to run without cars first... I know where I am, its illegal

It is illegal where I am too but if I could get away with running some sort of O2 Simulator that would be great, instead of trying to use my 300,000mile cats from the 4.3

#10

03-06-2019, 08:50 PM

blazen_red_4x4

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The truck originally came with cats, it's technically illegal ANYWHERE to run without them, and it'll definitely not pass emissions without them. I believe in some states there's a "so many years old" clause that lets them run without them? Living in Florida where we don't have emissions tests to keep the vehicles registered, I honestly couldn't tell you for sure, but I know it's definitely illegal to knowingly remove them if the vehicle came with them from the factory.

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