Anybody put a V-6 on a dyno?

[Funky61]

478 Magnum

[Funky61]

DH 478 Turbium

[Funky61]

last one DH478 Turbium

[GVDobler]

Looks like my my flat line remark was close to the truth, at least on the torque. I don't recall seeing another engine that flat.

Thanks for posting.

[Mike Caldwell]

for "how flat" reference

454 chevy dyno



478 graph cleaned up a little in photoshop

[GMC-HDV6]

Looks like the 454 is the way to go, Nice straight steady power as where the 478 has a rather sharp incline on the HP numbers than just ends ? ! ?

Torque on both don't seem to fluctuate much as far as the line goes visually speaking.

Unless I'm missing something ? ! ? Please do explain if I am
Mike

[Mike Caldwell]

check the axis -- graphs are not on same scale. I tried to read chart on 478 to get some numbers to graph vs 454 but eyes went crossed and I've got to go get some work done.

Also note that 454 wasn't graphed until 3500, when 478 graph stops about there.

As always it's low-end grunt vs top end hp.

I LIKE TORQUE

[GMC-HDV6]

I wasn't watching RPM's I was just simply watch how flat the line was left to right.

With gear ratios like 5.13, 5.38, 6.17, and so fourth a top end puller would work great for road speed on the highway

I got a GMC V6, 4spd, and 5.13s or 5.38s even with 19.5s its only does 58-62.5mph at 3,000rpms.
245/70R19.5's = 58mph@3K-Rpm and 8-19.5s = 62.5mph@3K-Rpms GPS'd it even.

Its a mean truck off the line but once it rolling in 4th gear its all done, It'll tow a lot behind it though and have no issues.

Drop 18-22K-Lbs on the hitch and roll it down the road.
Mike