Is this idea even worth discussing, or would it just be a totally futile effort? And yes, I know it would be expensive.

Stock 400 block or aftermarket ?

IMO not worth the effort as there are better platfroms to base a Comp deal on that are still Mopar. IE P5, 99/06 Hemi or even W8 stuff depending on the chassis you plan to use. Meaning an altered, dragster or Super Modified

The heads you have to use pale in comparison to the platforms that Al suggested. The Predator may come close, but the typical BBM architecture wouldn't be conducive to running over 10K rpm reliably.

About 25 years ago, a racer ran a 440 B1 combo in Super Stock (A/MS - Single cast 4brl intake, flat tappet camshaft) here in Australia. That thing was fast at the time, but ate up a lot of parts. I have not seen anyone race that combo since.

Whilst I think most of of like seeing something different, in this case, it's probably for good reason.

I'd also add the Dodge P7 head to Al's list. Both Slawko and CFE do unlimited N/A ports for them now

I would think an Australian Prostock engine could be pretty competitive in Comp elim.

Bob Book has customers running them

This is pretty cool.

https://www.forbbodiesonly.com/moparforum/threads/451-bbm.208444/

I was temped but bought my fuel injection stuff instead. That and Indy castings scare me LOL. If it was a KB block with some B1-MC's I might have dug a little deeper in the piggy bank.

Alan,

I have yet to see a P7 head in NHRA competition which ha surprised me.

I think but I don't know for sure, there is a Weber block that accepts them also.

Bill

A friend started building a A/EA engine years ago, but stopped because he didn't feel there would be any interest in them. The SB2.2 was starting to become popular in that class back then, the P7 is very similar, but the Mopar guys weren't interested back then it seems. Fear of the unknown I guess. Even now, most people running the R5 P7 platform are buying complete engines because they are relatively cheap.

The Ritter XR2 blocks were designed, as Kent and partners had a vast supply of ex Nascar parts. The XR1 (that is available now) was made from that casting. They are a tall deck (9.6 & 9.2"), not really something suited to Comp Eliminator. The R5 is 9"

We had a customer here that was trying the W8's in Comp, with about 306CI. Six or eight years ago. Spent tens of thousands on dyno time, weeks and weeks. The thing would make 750hp all day long with good spring life at 9500, but that's not going to get it done. Would just break 800 when you put the whip to it, but springs lasted less than 10 pulls. After getting frustrated and beating the head against the wall, did a complete fresh start, started with flowing the heads. They peaked in the 380's from what I recall, and that just wasn't competitive, nor was it what the porter promised. External events occurred and that project was shelved, was kind of a shame. S/F....Ken M

Both Scott McClay and Joe Mozeris have very completive Comp eliminator cars running W8 heads. I think McCay's is a 306, I am not sure the size of the Mozeris engine. Mozeirs won Comp at the Denver race this year and this daughter won Super Stock in a Daytona.

Comp is not for the faint of heart, neither is Super Stock, don't ask me how I know.

Alan,

So the Ritter XR2 blocks are not currently available?

Thanks,
Bill

Having had the conversation with Tom about the P7 stuff in Comp before i will rest on my previous statement. He said he can do them but not going to be competitive.

You do know one of the definition of a NHRA SS car is correct. That is a old drag race car you fill with $1000.00 bills to make it run fast, correct
if that is correct then a Comp Eliminator car would be one you fill up three time with $1000.00 bills to buy parts before starting to build it, correct

Scott McClay is running Rick Liuzzo's old engine and I believe car as well. It was a record setting combination in C/ED in the late 90's

Thank you Al, you saved me about $7K

Wouldn't slot of this depend on the class you intend to run the engine in? This is all theoretical thinking but a BB is going to be most competitive if the cubic inch is held below 360 cubic inches with the cylinder heads that are currently available. Obviously, I'm not an engine builder but my thought is you can size the bore such that the cylinder head ports can have proper air speeds and competitive flow for that particular bore size. That would mean custom crank and block, and long rods to make that work. As Al stated, there are more competitive and researched combos available. I think it would be interesting to see somebody run one in C/D, E-F/A, and a few of the wedge only super mod categories. I don't know if there is a Mopar part numbered head good enough to be run in any of the econo wedge head classes. Al, do you think the predator head would be more competitive at a smaller cubic inch(360-380ci)? Hopefully my thought process isn't too uneducated, just thinking out loud.

I know Rick went to the Winternationals in 2008 to help Scott with the car and said the engine was five years old at the time.

Long time ago but I think it was originally a 301 and they list 306 now, so at least it has been freshened up if not a new engine. No idea on the chassis.

Scotts, as well as joe and Kaylas stuff used to all be done by RWR. Seen alot of fast stuff pass through there. Pretty much all the W8 combos are small cube and one held the power per cube number until RWR was no more. They also did Lepones W8 and P5 stuff as well as alot of Aussie Pro Stock and tons of Comp stuff P5 stuff

As far as I know they are Bill, I'd be suprised if they weren't. Most people are buying the wedge block. I have one that I will be turning in to a coffee table, it was one of the prototype blocks that has some machining faults. I have another collecting dust in storage. I think you asked about the deck height on these in one of teh Facebook groups, I wouldn't deck them past the 9.2" mark. The one I have, if you decked it to 9.0", it would be in the water jackets.