The beast is back under the knife

Mcdiver

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It's been several years since I did the 383 in my 98. But, after thinking long and hard, doing days and days of research, I've pulled the heart out again.

I think our final decision on the ol girl is to keep the bottom end (was making 400 hp at the rear tires at tear down), loose the iron vortec heads and restrictive factory two piece manifold, and replace them with a nice set of ported and tricked out aluminum pieces. For ease of finding parts, we ate going to use the standard sbc bolt pattern heads rather than the funky vortec stuff.

The manifold will be sent out with the heads to Wilson to port match, install fuel rails, and to build the new throttle body. Once all of that comes back, we will send it out again to have a blind egr welded to the manifold as well as a blind input that connects to the exhaust (don't ask.). Then we have settled on a pro charger supercharger to top off the system ( only because they are the only ones with a system for my truck.)

After running some calculations and simulations this afternoon, we are expecting a conservative 700hp at the rear tires.

So now I have to do something about the darn tranny.
 

OldCracker29

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Like Greg said...going from 400HP to 700HP is a big jump. You may want to do something to the tranny as well.
 

PenguinLTZ

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It's been several years since I did the 383 in my 98. But, after thinking long and hard, doing days and days of research, I've pulled the heart out again.

I think our final decision on the ol girl is to keep the bottom end (was making 400 hp at the rear tires at tear down), loose the iron vortec heads and restrictive factory two piece manifold, and replace them with a nice set of ported and tricked out aluminum pieces. For ease of finding parts, we ate going to use the standard sbc bolt pattern heads rather than the funky vortec stuff.

The manifold will be sent out with the heads to Wilson to port match, install fuel rails, and to build the new throttle body. Once all of that comes back, we will send it out again to have a blind egr welded to the manifold as well as a blind input that connects to the exhaust (don't ask.). Then we have settled on a pro charger supercharger to top off the system ( only because they are the only ones with a system for my truck.)

After running some calculations and simulations this afternoon, we are expecting a conservative 700hp at the rear tires.

So now I have to do something about the darn tranny
.

Wow! That is quite a jump! Best of luck, that sounds awesome! :cheers:

Yeah, keep us posted on the progress, and what you do with both the engine and trans! :cheers:
 

Mcdiver

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The bottom end has maybe 10k on it, but my motor guy is tearing down for inspection. He wants no chance of something going wrong since he gave me a lifetime warranty.

Hoping my tranny guy can support that kinda hp without loosing the 4l60e. I do have a 4l80e we can build, but would rather use the 60. Less hp loss than the 80.
 

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