Got my numbers to beat

[carney93]

Friend of mine dynod his '77 K10 Cheyenne and it made 410 hp and 450 ft/lbs torque. I'm gonna try and top it when I rebuild the 350 in my truck
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[tvblazer78]

Thats big HP he is running....

[68Timber]

Originally Posted by tvblazer78

Thats big HP he is running....

Yeah it is. Specs? A friend has a dyno and said he'd run mine in and make a few pulls to see what it will do. Not sure I want to know, his dyno is nicknamed the heartbreaker. What are you building?

[carney93]

Originally Posted by BRUISER

Yeah it is. Specs? A friend has a dyno and said he'd run mine in and make a few pulls to see what it will do. Not sure I want to know, his dyno is nicknamed the heartbreaker. What are you building?

As far as the specs on his truck, all I know is it's a 383 with a cam. The truck was built when he bought it a couple years ago. I plan on taking the 350 and 700R4 out of my sub and rebuilding them both. The 350 will be getting bored and stroked to a 383 with a rotating assembly from Eagle along with new heads and either a Voodoo or Thumper cam. I haven't figured out the intake yet though, I'm either gonna go carbed or TPI. I'm also gonna pull the rear end and put a posi-trac carrier and either 3:73 or 4:11 gears. I'm also going to redo the exhaust while I'm at it with full length headers, either 2.5" or 3" pipe with 8" glasspacks (I love disturbing the peace lol ).
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[68Timber]

Sounds similar to an engine I'm building. Is this going in one of your Z's? I knew they went in 240's pretty easily but haven't seen one in a 300 before.

[Keith Seymore]

Originally Posted by carney93

Friend of mine dynod his '77 K10 Cheyenne and it made 410 hp and 450 ft/lbs torque. I'm gonna try and top it when I rebuild the 350 in my truck
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Is that at the flywheel or rear wheel HP?

K

[carney93]

Originally Posted by BRUISER

Sounds similar to an engine I'm building. Is this going in one of your Z's? I knew they went in 240's pretty easily but haven't seen one in a 300 before.

No, it's going back in my Suburban. I've got a 327 that I'm putting in the 300.
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[carney93]

Originally Posted by Keith Seymore

Is that at the flywheel or rear wheel HP?

K

As far as I know, it's rear wheel hp.
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[OutlawDrifter]

skip the glasspacks for power....there are a lot better flowing mufflers out there that make as much or more noise.

410hp/450ftlbs (500hp at the crank factoring an 18% dt loss) at the wheels is pretty stout, that costs a lot of $$. if you want to make power, a cam like the thumper really isn't going to get you there, they sound cool, but aren't really designed for big numbers. also, a thumper cam and the tpi will be very difficult to tune.

John, we had a dyno at the junior college where I grew up, nicknamed the same thing! there were a lot of sad faces pulling out of that bay...haha

[carney93]

Originally Posted by OutlawDrifter

skip the glasspacks for power....there are a lot better flowing mufflers out there that make as much or more noise.

How are you going to find something that flows better than a glasspack, there's nothing there? I get what your saying though, I should just straight pipe it and be done with it lol
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[OutlawDrifter]

Originally Posted by carney93

How are you going to find something that flows better than a glasspack, there's nothing there? I get what your saying though, I should just straight pipe it and be done with it lol
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it may look straight through, but thats not how it flows. think of a glasspack as a backwards funnel, as all that air expands, then it has to restrict back down to go through the exit. it creates its own bottleneck. there is a pretty in depth science to creating an optimum exhaust system, its based on scavenging exhaust gases rather than just big pipes.

[carney93]

Originally Posted by OutlawDrifter

it may look straight through, but thats not how it flows. think of a glasspack as a backwards funnel, as all that air expands, then it has to restrict back down to go through the exit. it creates its own bottleneck..

You got me there, never thought of it like that. I was also thinking about using Hooker Aerochambers or Moroso Spiral-Flows.

[OutlawDrifter]

go for the aerochambers, they sound great and have an expansion chamber in them to reduce the in-cab drone. i have an aerochamber on my ls powered z/28.