Really awesome stuff man.
What does shipping run from Tilden? I was looking at their LS packages.
We knew you'd be right on it. Can't leave something like that just sitting around right?

Nice progress! Did you fire it up?

You had a big weekend, Love that GMC grill.
How big of an exhaust pipe did you run? What muffler?
I’ll say it here too, getting closer!
)The collectors on my headers are 3", so it's 3" pipe of the headers that meet to a Y pipe just past the t-case. The Y pipe coverts to a 3.5" outlet. Then 3.5" single pipe into a 40 series Flowmaster, all the way out to a 4.5" tip. Should flow good. And I have a Spectra air intake to put on it, so hoping air flow is pretty good for the BBC. With a good performance tune, hoping 400hp and 500tq is attainable, we shall see.
I always have that feeling after a big project on the truck. I'm like, okay now what's going to go wrong and/or not work.It was a long weekend that was 100% dedicated to the crew cab. I feel like I've been lifting weights all weekend right now. But it was worth it, got just about everything buttoned up except for the few things I have to go purchase this week.
The collectors on my headers are 3", so it's 3" pipe of the headers that meet to a Y pipe just past the t-case. The Y pipe coverts to a 3.5" outlet. Then 3.5" single pipe into a 40 series Flowmaster, all the way out to a 4.5" tip. Should flow good. And I have a Spectra air intake to put on it, so hoping air flow is pretty good for the BBC. With a good performance tune, hoping 400hp and 500tq is attainable, we shall see.
Really close....but I've been here before, so not holding my breath (I may be jaded from my past experience though)

Saw on IG the Tilden 8.1 engine package winner dyno’d his K30 over the weekend. He put down 250/350 on the chassis dyno through 42” pitbulls.
That is going to sound mean. Good luck with the start up. I’m excited for you.
I always have that feeling after a big project on the truck. I'm like, okay now what's going to go wrong and/or not work.
3.5" exhaust is huge, right? Kinda feels like when I first got the Dana 60 after working on a Dana 44 so long, everything is so much bigger. Kinda like going from a 350 to a 8.1L.

IIRC on his rig, he has an auto and doubler he's running through too right? If that's the case, that's a lot of parasitic loss occurring, especially with 42's as well. So that's pretty impressive still considering the conditions.
That 3.5” single exhaust is good for about 465 horsepower, restriction free. I think it is just the right size for that 8.1![]()
No it's a manual with a doubler and 4.10's, still good numbers IMO.
Ah, yeah it's a SM465 isn't it? Still, like what you said, pretty darn good numbers considering. Did he do a tune on his, or just the flash on the computer that Tilden does? Cause it's not a performance tune that Tilden does. It's pretty much just a pre-flash to remove a few things that they delete from the harness depending on what you need...that way it runs like it's supposed to from the factory. But other than that it's a stock computer tune. Hence why I'm going to have Team208Motorsports do a tune on mine once it's running
Saw on IG the Tilden 8.1 engine package winner dyno’d his K30 over the weekend. He put down 250/350 on the chassis dyno through 42” pitbulls.