March 2021 Prelims

[Tim White]

A lot of letters sent, OK mostly by me It sounds like it is back to the drawing board to contain costs and performance of FP cars. I'm confused, why don't they just use weight. They don't seem to like my idea of a 50 lb addition for 13.1" rotors though.

https://www.scca.com/pages/cars-and-rules

[DHRMX5]

It is a shame. I saw a comment on the BSpec FB page that someone got a 25K quote for a new AS engine. Wowsa. I lost 2 4.6 LP Mustang builds once the clients saw that the FP cars weren't being trimmed.

[andy mcdermid]

Wow $25K for a FP engine. I keep hearing that from the B spec guys. Are there a lot of B spec guys running in AS as well ? Highest price I've heard for a FP engine is $20K, that was carb to pan with accessory drive, plug and play. The 4.6L 2V engine, is unfortunately, a very hard engine to make power with. It makes a good starter engine to get your "feet wet" but will not be able to catch a limited prep LS, Coyote or a FP 5.0L engine.

I have never heard anyone on this forum ask how much you could buy a used FP engine for. There are some out there. That would get some of the people with FP cars, not running, back out there at a more reasonable cost.


The sky is not falling.....

[jimwheeler]

I second Andy's post. I have two FP Chevy engines. Both produce right around 450 hp. and good torque. They will rev to 8,000, but I limit them to 7,500 at the Runoffs, and less than that all season. One has only run on the dyno and the other has a season and two Runoffs, and is still strong. $25K takes them both, plus spares. I would be making money. B-spec guys, generally, are nice. I love what they are doing with the class, but they need to keep their traps shut about AS, since it is obvious they don't have a clue.

[PamRichardson]

I will agree with both Andy and Jim. From everything I have heard, researched, and experienced about the 4.6 Liter engines, they just can't be made to get the kind of power that other AS cars (FP and RP) make.

When there was the push to let the Spec Mustang in, as is, the community tried to warn leadership of this. Seems they didn't listen...

I do believe it is why the ASAC now allows the 5.0 Coyote in all of the cars that came with the 4.6. If someone wants to build an RP Mustang, I would recommend the Coyote.

There are people in this class that have been building efforts throughout the years, from the inception of the class in the early 1990s. Listening to them is always a positive thing to do. They have tried just about everything and know what formulas work.

FWIW, Pam

[DHRMX5]

Your info must be on the older 4.6 2V engines. A properly built 4.6 3V can easily make in the 350rwhp range for considerably less than your FP engines. At 3200 lbs that would be a decent car. If you let me build the engine to run at the same rpm range the FP do it will make similar power. And be VERY reliable. BUT, we wouldn't want a cheaper, more reliable package to be too competitive, would we....

[MarkMuddiman]

So is the solution for the 4.6 to make a mid-prep package? The whole attraction of RP is cheap and easy, order everything from a catalog, so how many potential 4.6 racers want to do major invasive engine mods?
What does it take to get a 4.6 competitive? Aftermarket heads, intake, forged crank, cams, fuel injection, PCM? Sounds like FP with fuel injection. Nothing left of the stock engine except the dimensions.
This is actually a good application for restrictor plates: any components you can buy or make as long as it breathes through a set hole.
Choking down the majority of the class to suit the underpowered minority is ridiculous.

[Tim White]

Originally Posted by MarkMuddiman

Choking down the majority of the class to suit the underpowered minority is ridiculous.

This is spot on.

[Ted Johnson]

Originally Posted by PamRichardson

I will agree with both Andy and Jim. From everything I have heard, researched, and experienced about the 4.6 Liter engines, they just can't be made to get the kind of power that other AS cars (FP and RP) make.

When there was the push to let the Spec Mustang in, as is, the community tried to warn leadership of this. Seems they didn't listen...



There are people in this class that have been building efforts throughout the years, from the inception of the class in the early 1990s. Listening to them is always a positive thing to do. They have tried just about everything and know what formulas work.

FWIW, Pam

So in regards to your expertise, where is the go to place to purchase asedan spec heads for someone new to invest $22000 in two engines as seems to be required insurance to run a 450hp fp engine in a sedan. I seem to remember a post where you had an annual refresh of your engines. I dont remember what you stated that cost at. Another insurance policy to keep your $12000 initial investment alive and winning. Danny's doing great these days. Fun to watch him at the pointy end of the field

And as a follow up question, if a new spec head is chosen for full prep, it's likely to outflow the current head. Is it wise to make everyone upgrade or do something to limit it's power potential?

[andy mcdermid]

Completely agree with you Mark.

Ted, when are you coming back ?