I'm not using the Aussie heads.

 

I didn't use the old Aussie heads, but I did get my heads from Cylinder Head Innovations, which is an Australian company.......So, I guess they're new school Aussie heads

I recently noticed that Tim added my truck to his site, as my plant was a 434 build (2V version) of his. I tried to include as many bits and pieces as I could remember in the description, and Tim was gracious enough to include the entire list. He built a great plant, and it does exactly what I need it to....well, perhaps a bit more....lol.

Anyway, Buford is under the link on his site for Customer's Rides, but here's the link.... Tim McAvoy-1979 Ford F250 Thanks again Tim, for a great engine build!

 

Tim - I love it. What cam are you running? I'm going with the Pantera cam and wonder how it compares to yours. And, what compression ratio are you running?

 

I believe that Tim originally tried the Pantera cam with mine, but being a 2V version of the stroker instead of the 3V like the Pantera was, it didn't work out too well. So, Tim ended up getting a custom grind for my cam once we tried a couple options. I'm sure he has the specs on that particular cam, and I can probably find it in my paperwork somewhere, but the numbers escape me currently. The custom grind did work well, as this being a truck, I wanted the grunt down low in the rpm band, and it did just that. I recall Tim telling me that my plant produced over 500 ft/lbs of torque at only 2500-2800 rpm, and remained above 500 pretty much throughout the powerband. The peaks were 504hp/544tq, WITH good idle and vacuum. Tim said we could have wrung a lot more power out of the setup, but at the cost of idle and vacuum, which I wasn't willing to sacrifice.

As for compression ratio, Tim advised me that my plant runs just short of 11:1. I'd take that as meaning 10.9:1 or better. With the aluminum heads, it gives me a little grace on fuel, but I run super unleaded, and add octane boost just for protective measures which I probably don't need......it's never pinged once. Then again, I've not pushed it hard enough to ping yet, but it hasn't acted like it wants to at all.

Anyway, if you need the numbers off the grind of the cam, I'm sure Tim has it on file. If not, it'd take me a while, but I might be able to come up with the numbers too.

 

I need to talk to Tim anyway, so will ask him. Mine is supposed to come in at 10.5:1 and should be fine on pump gas. Thanks.

 

Yeah, if you're running aluminum heads, 10.5:1 is no problem on pump gas. Might not want to run regular to be safe, but should be fine with super. As for the camshaft, as luck would have it (and because I rarely throw anything away), I found the email from Tim about the cam grind. It's as follows:

Cam specs are:

Lift: .579(Intake) .591 (Exhaust)

Dur. @ .050” : 216 (Intake) 224 (Exhaust)

Open @ .050 : 0 (Intake) 40 (Exhaust)

Closes: 36 (Intake) 4 (Exhaust)

Hydraulic roller

Hope this helps! (and sorry if this is jacking the thread a bit, Tim!)

Tim

 

That's a nice, mild cam. And your goals WERE much like mine - TORQUE, and at low RPM. Decent economy comes next, and horsepower is only for bragging rights as I'm not going to turn it high very often.

Yeah, sorry Tim, we've hijacked your thread. But, we are talking about your work, so I'm sure you are cool with it.