Most if not all shops with a single cell dyno's are usually "happy dyno's" to begin with. We do a ton of OEM work so all our dyno's are SAE calibrated. Almost every engine we dyno after someone else has dyno'd it prior always makes less power and torque. How much, depends on the engine.
I've personally seen that Our local Studka engine dyno operator was testing one of my motors several years back when I was doing a lot more engine building and dyno testing. He did calibrate their dyno after me asking him how often and how long ago was it last calibrated. He didn't know so we calibrated it and that motor lost 50 HP and similar torque ( I don't remember exactly how much torque, sorry: blush) with no other changes to the motor He was the 2nd or 3rd operator of that dyno that I had do testing for me on it The owner of that dyno did not run it, he let several of his local mechanic friends use and run it. He died several years ago so I am now using a different shop now in Mefford, OR which s a lot further drive That shop uses a Super Flow engine dyno that has all the latest's updates on it and seems to be a good one I've come to the conclusion that the gross numbers don't really matter as long as I can see the changes when making tuning and part changes
Last edited by Cab_Burge; 06/11/2505:21 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Mike Moran BBM build video
[Re: Cab_Burge]
#3310684 06/10/2512:12 AM06/10/2512:12 AM
The amazing thing to me was that they thought I wanted that bad music blasting in my ears for 5 minutes.
Misc things that popped into my head after watching the full video the 1st time and then looking more closely at certain things going through it a second time: - no mention of displacement, compression, cam specs, etc., and I'm pretty sure it's NOT a "440" now - I can't imagine my out-of-the-box Victors would have made almost 700 HP, but picking up 50-60 HP with a full port job sounds right (regardless of what the engine really made before) - the MCH porting wasn't to Max Wedge size, maybe somewhere between standard and MW like Hughes' "standard port" CNC Victors had - CNC'd chambers look much bigger than original size ==> bore overhang? - Harland Sharp rockers, FWIW - nothing I've heard about Bob at MCH over the last decade would inspire me to send him anything; guess Mike and Bob must be buddies - I've heard of Land & Sea dynos for years, but don't know anything else about their reputation, accuracy, or... ? - nice to see an EFI setup that seems to run OK on a combination like that, even though I'd turn up the freakin' idle speed
2021 Challenger 6.4L Scat Pack 1320 100% stock: 1.680, 11.894 at 113.75 (DA 175 ft) weight reduction, wheels, tires, Hellcat air box: 1.661, 11.686 at 115.97 (DA 710 ft)
1973 Challenger 452 ci street/strip [2008] pump gas, DOT radials: 1.454, 10.523 at 126.44 (DA 514 ft)
Re: Mike Moran BBM build video
[Re: Brad_Haak]
#3310919 06/11/2504:57 PM06/11/2504:57 PM
The amazing thing to me was that they thought I wanted that bad music blasting in my ears for 5 minutes.
Misc things that popped into my head after watching the full video the 1st time and then looking more closely at certain things going through it a second time: - no mention of displacement, compression, cam specs, etc., and I'm pretty sure it's NOT a "440" now - I can't imagine my out-of-the-box Victors would have made almost 700 HP, but picking up 50-60 HP with a full port job sounds right (regardless of what the engine really made before) - the MCH porting wasn't to Max Wedge size, maybe somewhere between standard and MW like Hughes' "standard port" CNC Victors had - CNC'd chambers look much bigger than original size ==> bore overhang? - Harland Sharp rockers, FWIW - nothing I've heard about Bob at MCH over the last decade would inspire me to send him anything; guess Mike and Bob must be buddies - I've heard of Land & Sea dynos for years, but don't know anything else about their reputation, accuracy, or... ? - nice to see an EFI setup that seems to run OK on a combination like that, even though I'd turn up the freakin' idle speed
He was all done at 6200 or so that tells you it's got the big engine with a little head syndrome going on. He did say it was a "street" engine.....
And when they were disassembling the heads you can see someone was in there with a burr bit digging around. So technically they weren't OOTB.
With those numbers I'd assume it is a 505 with 12:1 compression and a decent solid roller cam. But he doesn't give any details and I couldn't see any specific part numbers anywhere. I'd think a 505 could make 700 hp with Victor heads but 6000 rpm peak does seem a little low. Heck if I know. Pass car headers don't help with the power numbers that is for sure. Valley plate design doesn't match the heads, guess they are hoping the RTV will keep it sealed up. Big Stuff EFI is a weird choice but I suppose he uses it since it is what he knows. Big Stuff is really outdated, about the only people that use it are the No Prep guys.
Re: Mike Moran BBM build video
[Re: rickseeman]
#3311145 06/13/2502:55 AM06/13/2502:55 AM
Why would I bother to watch an engine build or test without specs? I’m glad you guys gave me a heads up. I mean, that’s pretty useless is all I can say.
I want my fair share
Re: Mike Moran BBM build video
[Re: Brad_Haak]
#3311574 06/16/2508:45 AM06/16/2508:45 AM
Not far off my 12.5:1 511 combo. Victor heads with a 330 intake port that flowed 356cfm@.700. Solid roller 269/275@50 on a 108/.700 net lift. Run thru 2" headers ran a 6.3@109 1/8 at 3400#. Compute to 1/4 mile shows only 640hp on the moroso slid rule.
That shop uses a Super Flow engine dyno that has all the latest's updates on it and seems to be a good one 
