Thought I would update what has been going on with this build. We changed cam to a Bullet and rockers to T and D push rod oil,and made changes to the ring pack and oiling. The heads and intake are the same, pretty much OOTB,and no changes to the car. We went to Baytown and made 3 laps. The first was a shake down and the last 2 were with the setup that was in the Grid, because we forgot the laptop, which shifted at 7200 and went on high speed chip at 7500. The starting line was done by the last one and it spun a little. I think we can get this thing in the mid to low 8.90s at 150 which is goood for a set of OOTB heads.

Ray Buckner

Dyno Sheet before and after changes

Ray

Those two sheets are a bit puzzling.......

At 7200rpm, the "after" sheet shows roughly a 100hp improvement, while at the same time using over 50lbs/hr less fuel.

The fuel flow at the end of the "after" pull(7700) is less than what it is at the beginning of the "before" pull(5800).

Averages at the bottom of the page;

Before - 320.1 lbs/hr
After - 237.2 lbs/hr

Curious, why the change in rockers? Just a change in spring pressure with the new cam requiring something a bit better? or did they break.

Changed rockers because I've always had problems with ball and cup push rods so I thought I would try ball and ball push rod oiling for a change. I was told by the the engine builder that BSFC lb/hph is what he prefers. The car ran 9.23 @143 before the changes, so it's heading in right direction. My son and Brett Miller have been talking about this build and what he thought it needs and about what the heads and intake need to get this thing to the next level

Ray

Very nice car!

Were both tests done with the same carb and same fuel?

Are you saying your engine builder (and dyno operator?) is trying to tune from the BSFC, instead of the air-fuel ratio?

If so, somebody should tell him to Google "you can't tune using BSFC" to help him understand why that's a flawed approach.

Next step in power😀

Any before pictures?

That is totally gorgeous and exactly the car/combo I'd want if I was to ever get back into racing over here, slay those BB Mopar boys just like I did in the old days.

And so does Pettis and EVERY carb on his dyno needs more fuel across the board when in the car and at the track making passes. Afr's to me are the base of tuning then salt to taste from there........That car is a complete work of art............

The point I want to make is that the Victor head is worth the investment. They made 1.7 hp/cu in, which on a 408/416 is around 700 hp. And the best part is you can bolt them on and go. All that was done to ours was a valve job and clean up the tool marks. Everything is available now to complete the build. I admit it's not cheap, but it's a lot more affordable than you think.

Ray

Here are some before pictures.

Does vicbloomer still post on here...just asking been a long time since I seen a post from him .

Oh! Started with a raw casting!!!!! Wow
Thanks Brett!