Rusty's Baseline Dyno Test
 

Re: Rusty's Baseline Dyno Test
 

Nice baseline. Aren't these trucks rated at 185 hp anyway? How many miles on yours? Does it rev or pull past 4100 rpm or is that just where max power was? What gear to they test in? I assume 4th or 1:1 gear.

Re: Rusty's Baseline Dyno Test
 

Good base!

Re: Rusty's Baseline Dyno Test
 

3 pulls for $80 correct?

Re: Rusty's Baseline Dyno Test
 

160 @ 3800 RPM according to the 1974 Light Duty Truck Service Manual, I attribute the additional horse power to the less restrictive dual exhaust and the deletion of the SMOG systems

Odometer reads 34,457 so I am guessing 234,457 as it's hard to put on a ton of miles on a farm truck, probably not much highway driving

Yes it revs passed it, we let off at 4,500 RPM

Good question, I don't know I will have to ask.

Re: Rusty's Baseline Dyno Test
 

Yes

Re: Rusty's Baseline Dyno Test
 

just wanted to share a little trick John did for one of the pulls cause he thought the air cleaner snorkel is too restrictive

I am all about little tricks like that, maybe some of you have seen this done already, but I haven't, yet it is so simple (and yes my air filter is dirty as heck, going to replace it and the air cleaner housing next month)

Re: Rusty's Baseline Dyno Test
 

188hp at the wheels is not bad at all. Remember the old hp and torque specs were done at the flywheel not the wheels.

Re: Rusty's Baseline Dyno Test
 

This is what I was thinking, sounds like a healthy base line for sure.

Re: Rusty's Baseline Dyno Test
 

I'm impressed that it's putting down that much power stock. I ought to dyno mine eventually but with 350/350, 4.10s, and currently 30.5" tires it's no fun on the freeway.

Re: Rusty's Baseline Dyno Test
 

That's awesome. I need to go have my non-turbo diesel tested so I can have a good laugh.

Re: Rusty's Baseline Dyno Test
 

some swear they were made to do that "flip".
but no all fit
sounds louder too,I want to make one stocker a dual snorkel

Re: Rusty's Baseline Dyno Test
 

The air filter flip has been around along time. I remember my dad doing it on his '69 El Camino. I did it on my new '77 1/2 ton stepside when I got back then.
If you have a truck with stock exhaust the intake sound when you open it up is far more impressive, especially in the cab.

Happy Holidays and God bless, Terry

Re: Rusty's Baseline Dyno Test
 

What I have done is take the snorkel off the air cleaner. It is spot welded on. Them I take a piece of cardboard and trace the oval pattern and transfer one to the other side of the air cleaner and one in the back. Then the air cleaner has three large oval holes in it and retains the breather for the crankcase to the rocker cover. On models that have the breather inside the air cleaner base I just cut the entire bottom off of the air cleaner.

Re: Rusty's Baseline Dyno Test
 

nice nubers to start with. but i hope that you dont really think your truck is rusty??? i could show you pix of my c20 and my ramp truck that are on the road and pass inspection that make southners cry lol

Re: Rusty's Baseline Dyno Test
 

Sounds interesting, do you have any pics?

Re: Rusty's Baseline Dyno Test
 

This power curve is just perfect for the average driving that I do (now). 90% of my driving is between 2000-3000 rpm and the trans shifts at 4500 at WOT. I have to replace my cam this summer and I hope the aftermarket can supply me with a cam with max efficiency at 2500 rpm.

Re: Rusty's Baseline Dyno Test
 

Yes I think I can come up with a couple later today.

Re: Rusty's Baseline Dyno Test
 

1500-3000 RPM with a max of 4500 (if that much) is where a good driver needs to make power. There are lots of aftermarket cams that will work well for you. The inexpensive Summit Racing SUM-K1101 cam would do the trick, and possibly their K1102 depending on your truck's axle ratio and compression. Some of the newer design cams, like the smallest Lunati Voodoo or Crane Z-series, should work even better.