IQ52
Well-Known Member
I'm switching this over to it's own thread from the 440 Source head thread.
There has been a recent surge in curiosity about the power you can get with rebuilt factory iron heads.
We've a dyno day coming up at our shop to introduce the people around here to the advantages of an engine dyno (it's the first one in the entire county). It's kinda an open house for people to see an engine run on the dyno. Seems some people think it has something to do with dinosaurs.
So we've scheduled a weekend to put a cast crank 440 engine on the dyno and try different heads, cams, intakes and exhausts without changing the compression on the 440 (even if it turns out to be 7.3:1). I have always maintained that higher compression isn't mandated in every engine build, even if you are trying for 500 or so horsepower.
We don't know what all will be included, but some of the candidates are 516 heads with 2.14/1.81 valves, 346 heads stock and with valve changes and additional work, 915 heads, 906 heads have been offered by a member, and whatever else we dig up (flow figures will be provided). Looked on the shelf the other day and there is a new MP .509 in the box so it'll get it's chance against the stock '78 cam. That is, IF the stocker isn't worn out when we tear down the 440 to freshen it.
All this will take much longer than one day on the dyno, but if everthing goes according to schedule, Saturday the 14th will begin the dyno runs. Gonna be hot dogs, burgers, pop and there will be some door prizes for those in attendance who guess closest to the horsepower and torque in the different configurations on Saturday.
If you have some ideas that you would like tested, lets hear them. If we have the parts, MAYBE we can incorporate them in the tests. No piston changes are planned for the tests.
When we're done testing, the 440 is going in a really clean '72 Satellite Sebring and we'll sell the package. The Satellite has a 440 in it now from when I bought the car, but, someone else built it, and it has a vibration from a mish-mash of engine parts that never were balanced.
There has been a recent surge in curiosity about the power you can get with rebuilt factory iron heads.
We've a dyno day coming up at our shop to introduce the people around here to the advantages of an engine dyno (it's the first one in the entire county). It's kinda an open house for people to see an engine run on the dyno. Seems some people think it has something to do with dinosaurs.
So we've scheduled a weekend to put a cast crank 440 engine on the dyno and try different heads, cams, intakes and exhausts without changing the compression on the 440 (even if it turns out to be 7.3:1). I have always maintained that higher compression isn't mandated in every engine build, even if you are trying for 500 or so horsepower.
We don't know what all will be included, but some of the candidates are 516 heads with 2.14/1.81 valves, 346 heads stock and with valve changes and additional work, 915 heads, 906 heads have been offered by a member, and whatever else we dig up (flow figures will be provided). Looked on the shelf the other day and there is a new MP .509 in the box so it'll get it's chance against the stock '78 cam. That is, IF the stocker isn't worn out when we tear down the 440 to freshen it.
All this will take much longer than one day on the dyno, but if everthing goes according to schedule, Saturday the 14th will begin the dyno runs. Gonna be hot dogs, burgers, pop and there will be some door prizes for those in attendance who guess closest to the horsepower and torque in the different configurations on Saturday.
If you have some ideas that you would like tested, lets hear them. If we have the parts, MAYBE we can incorporate them in the tests. No piston changes are planned for the tests.
When we're done testing, the 440 is going in a really clean '72 Satellite Sebring and we'll sell the package. The Satellite has a 440 in it now from when I bought the car, but, someone else built it, and it has a vibration from a mish-mash of engine parts that never were balanced.