I doubt you are going to want to run anything less than straight 110 at 13 to 1
I had CP slugs in an old build. Sweet slugs. Very nice. Best did that motor, was very happy with it

Best (Chuck) built my 540" B1 motor16 yrs ago, (pre-Pete) and did a fantastic job. Best is more than capable for the HEMI.

My brother-n-law had FHO build his new all alum (KB block) 572" HEMI pump gasser last year for his '69 Super Bee streeter with a Passion 4-Speed. Its a complete animal when matted, and super tame under normal driving conditions. I drove the hell out of it this past Christmas. He raved about Tim's outstanding customer service, and more importantly how customer service was after the purchase.

I think Al Aguire (sp) is selling a HEMI with many of the things you are looking for .... maybe not exactly what you want , but get what you need

Yeah, maybe i should stick with the 12:1. Don't want to get into the straight race fuel gig. I understand these Hemis are good on pump gas to 11.5:1, so shouldn't take much race fuel. I'm currently at 12.5:1 in the wedge and only use 4 or 5 gallons race fuel to 15 gallon cell. So, it looks like i'm on my way now with this Hemi project. Thanks guys

Would you consider E85?

He probably means this one. https://www.callies.com/catalog/product/ultra-i-beam/? That's what I bought for my last build. (But I was trying to spend mo money.) Made in USA

I use a Callies Magnum crank, billet steel Oliver rods, and Diamond pistons. I went with better parts b/c I knew I'd end up spraying it eventually.
If it wasn't for the nitrous, I'd have probably used something like Molnar for the bottom end.

My thoughts on compression is do one or the other...meaning either use strictly pump gas or strictly race gas. Mixing fuels is a PITA and gets old quick. Keep it in the 11:1 range for pump gas or go 13:1 or better if you don't mind race fuel.

FWIW...mine is making somewhere in the 850 hp range on pump gas w/ cnc ported MP heads (probably the closest thing to a stock heads in aluminum), 4.5" stroke, standard cam height and timing chain, etc. Pretty boring as far as big inch hemis go, but I can't argue w/ the results. It's been almost 142 mph in the 1/4 on motor only, on pump gas, and over 3800 lbs..

At 12:1 a G2 aluminum hemi is just fine on 93 octane...Probably even 12.5:1.....

He was considering 13-1 which is why I asked as it would work well for that.

Yeah what he said....Be happy to let you come get it

What about Indy? They’re under new ownership & have moved to a larger facility.

Thanks for the offer Al, but i have to pass. I think its half the fun rounding up parts and putting it all together.

I had a Barton 572 hemi. It was 10.5-1. It made 804 on pump gas, no detonation, tire shredder. Don’t thing anymore is needed for the street.

That is a possibility, but i think its way more trouble than race fuel. Race fuel smells better.

I have time to decide, but it will be at least 12.5:1. Just got off the phone with Chuck, he suggested a Callie's crank as well. The compstar crank they like better than Molnar and the Compstar is less money than the Molnar as well. Sounds like a no brainer. Called Callies as well and they agree, the compstar rods and crank are good enough for what i'm doing. At this point it is also looking like i will need a CP custom piston as well. Adding up fast, but still will be way less money than Tim had me spending. Not a dig on him, just a fact.

I’m running 4.75 Callis crank with Oliver rods. Indy Max aluminum block, cnc Indy SR heads, 11:1 compression. It went 10.15@133 in 100 degree Arizona heat the first pass on the new engine and suspension on 91 octane and very conservative timing. Waiting for the Indian tribe that owns the land the track is on to lift the COVID mask mandate to go back. We’re already 100+, probably wait until the fall.

Nice, i think you will see a nice gain in the fall.

keep us up to date with this build.

The track is on a reservation?

Yes, i will. Something else i have learned is the stage v heads have to be drilled for 1/2" head stud. Tim didn't mention that and the BM block has something smaller, not sure the size, but hope i can still use these heads on the BM block with the smaller stud. It's a constant learning curve with this Hemi stuff, but it is fun.