What did you do to your G-Body today 2024

[64nailhead]

i'd wager to say they also have more efficient combustion chambers as well...

Looking back at your dyno graph it’s clear by the way the torque is nose diving while the HP is still climbing that something in your batch of parts is somewhat mismatched imo. But I’m also concerned about the recording, I’m not familiar with the HO and TQ curve intersecting at that low of an rpm.

 

[Built6spdMCSS]

Timing and fuel will make that graph do that, too low of RPM for valve float and the HP is climbing not flattening out. Too high of timing under peak torque load it'll cause detonation.

I'm thinking some exhaust scavenging would help given there's no crossover.

 

[MrSony]

Looking back at your dyno graph it’s clear by the way the torque is nose diving while the HP is still climbing that something in your batch of parts is somewhat mismatched imo. But I’m also concerned about the recording, I’m not familiar with the HO and TQ curve intersecting at that low of an rpm.

The cam I have is admittedly too rowdy for my setup. I really should have a bit more compression and head flow.

But on the other hand, this is the same cam that was in this engine 4 years ago.

Only thing I changed about the whole setup was timing and fuel and adding mufflers. I'm 99% positive the mufflers are at least 40% of the power loss, then the extra 4 degrees of timing. Sbb typically run best around 32, and I have it at 36 all in by 2700-2800. I'll schedule another more intensive session soon, but for $150/hr it'll be a while yet.

 

[Built6spdMCSS]

Well, if you have known losses I'd get your mod improvements done first before going back. Keep in mind a Dyno is just a tool, you'll get it dialed in for that day and weather conditions.

 

[64nailhead]

The cam I have is admittedly too rowdy for my setup. I really should have a bit more compression and head flow.

But on the other hand, this is the same cam that was in this engine 4 years ago.

Only thing I changed about the whole setup was timing and fuel and adding mufflers. I'm 99% positive the mufflers are at least 40% of the power loss, then the extra 4 degrees of timing. Sbb typically run best around 32, and I have it at 36 all in by 2700-2800. I'll schedule another more intensive session soon, but for $150/hr it'll be a while yet.

The word ‘typically’ is the issue and it makes a fair amount of assumptions about your setup.

 

[Built6spdMCSS]

Yea, I can have 10 different engines with the exact same setups and all 10 will run complete different. Close maybe, but different. They will run they way they run. Baselines are good to have but again run the way they want to run.

All depends on your goal here, what are you trying to achieve.

 

[melloelky]

Yea, I can have 10 different engines with the exact same setups and all 10 will run complete different. Close maybe, but different. They will run they way they run. Baselines are good to have but again run the way they want to run.

All depends on your goal here, what are you trying to achieve.

 

[Built6spdMCSS]

Let me show you how that happens no matter how much knowledge & tools you have...

 

[SS_Malibu]

Sierra Vista AZ, about an hour and a half south of Tucson. If your not familiar with Sierra Vista, we are where Ft Huachuca is located.

I know where that is. Way down there.

 

[mclellan83]

Swapped in the new bigger battery, seemed to solve the issues so hopefully will be swapping it out with the GTO so I can do the clutch replacement on it this weekend. When I get it back to my place I have to touch up the wheels and hopefully paint the top of the Edlebrock then give her a hell of a cleaning