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Whats really interesting is when you mount the turbine on top of the T-ram carb enclosure--What would you expect the CFM to read? J.Rob

Exactly what Nick should have done except you need a VERY special adapter to "stack" them one on top of the other in order to use the stock manifold. All kidding aside the 850 doesn't really work all that well on just about anything due to the venturi/throttle bore sizes. Take a good look at...

It is without a question a 600VS and the secondaries were barely opening NOT a 750vs. The fact that putting on a high flow 750dbl didn't make much of a difference is a testament to how little air that big block was moving- then again had he ever used his dyno air turbine to measure he would have...

Apples to fake moon rocks. J.Rob

Your warmer than most but its really the stroke (piston speed) that is the culprit along with low compression in most cases. J.Rob

400 is the same slug as the 383 should run even worse with a dumpr cam. I never built a 2bbl bigblock so? J.Rob

1. Yes full service machine shop/dyno service. 2. I know this but 383 cubes is still 383 cubes. It's still a benchmark to highlight just how poorly the 383 performs. 3. NC 4. If it causes hate then thicker skin is needed--I was bored and responding to Nick's obvious confusion on where the...

If I see something that needs to be pissed on I piss on it. The 383 Mopar is just that in this case. Guess you don't like the truth--which is the same as piss. J.Rob

First off I despise 383's possibly more than the 318. The 383 has no right to call itself a big block. I've built more than a few and they always disappoint. ALWAYS. I've actually been refusing to build them if the customer wants a " stock rebuild, im only cruising, don't care about performance"...

Also--I use a crank shop near me in Quebec for my balancing needs and from time to time I get them to grind or in some cases index/offset grind certain cranks (He is so much better than me at it) and for what he charges to offset grind isn't a quarter of the cost of a good new crank. I'm not...

I can't speak for the OP but in my case... I did it because I have a crank grinder and I had a 383/400 steel crank on hand and I wanted to build something unique for my buddy and I've always hated the stupid 3.375" stroke and I made the stroke to fit the piston and rod selection and I like the...

There is no factory hardening, unlike most diesel cranks. Have offset ground many cranks , never an issue. The 3.915" stroke 471 combo was being done in the 80's that I know of and maybe 70's. J.Rob

Interesting to look at some balancing information. 471 W/ ICON dished pistons and Eagle 6.535" Rods = 2297.5 Bobweight 360 W/KB Hypers and OEM Magnum Rods(lighter than an LA) = 2074.5 Bobweight 426 W/Mahle and Eagle 6.7 Rods = 1941.5 Bobweight J.Rob

Just going off the top of my head since I'm not in the shop. Cam is 256/260 @ .050" .580"/.585" 111 or 106 I think. Eagle 6.7" H beams Mahle 929962575 I think the bob weight is 1850 or 1950 grams. J.Rob

The bobweight is very low--like small block low. J.Rob

Yes I've heard of it. In fact I have one i'm building for my bodyshop buddy's '72 RoadRunner. I turned a 383 forging to 3.545" stroke x 4.375" bore= 426.33 ci. I'm using a 6.7" Rod with a Mahle piston with a 1.32" CHT. < Correction it is a 1.480" CHT-I've got a lot of builds going on--LOL.I've...

It really and truly is probably the most tedious and time consuming operation in the whole block machining process. There just is no easy way to speed it up other than a big $$$$$ CNC $$$$ right angle head and even then the line hone will still be necessary to finish it off. It truly is a HUGE...

Yeah it was $1500.00 nice-but worth every penny. A good toolmaker's vice comes with a certificate of parrallelism, square, true, flat, and a known 2" dimension off the table all within .00002". J.Rob

Agreed--See? Its your fault they're still like this. LOL. JK. J.Rob

Thanks, Here's a couple of photos of the current dilemma. No more bearing tang notches. I will have to machine them deeper. Think I'm gonna go with a commonly available router bit chucked in a tool holder in the mill. Hope I can find one. J.Rob p.s. Thanks for the kind words.

Absolutely spot on. Bearing tangs are barely there-also agree on the off -center comment/ also agree on the--"sort of suck" comment. I'd never use 'em again, that's for sure. J.Rob

No idea--wasn't my call-customer supplied. J.Rob

I overshot the first line hone by a thou and a half and had to cut the caps. I used my flycutter in the mill and this is first thing in the morning and when I should have gone home and worked around the house. The CNC calved on me--so I farted around with it for about an hour before I went to...

You would think aftermarket caps specifically made to employ ARP studs wouldn't have to be machined on the #3 cap for thrust adjustability, but they do. -Annoying. J.Rob

Just wanted to share last weeks work menu. I've been line-honing a little longer than line boring and the two go hand in hand but line boring is seldom necessary. However when installing aftermarket caps with .100"+ to remove line boring is an absolute. Before I was capable of this operation I...

After using those stupid "step-Dish" pistons I have come to the conclusion that I don't like'em. Everytime I have used that stupid design I'm way low compared to my estimates. I think those pistons are barely a step up from a stock piston that's .050"-.100" in the hole even if its only half of...

Helped Nick out twice and met him three times in person--the last job I did I called him for his Purolator account number so I could just ship all of his stuff back--He's VERY different in person. I decided I had no time in my life for him and I figured it was likewise. No harm no foul. My dyno...

Flow rates aside--You cannot match the gorgeous chamber on the TF's or there sweet intake valve shape which in large part results in the killer .400"-.500" flowrates. The most flow I have personally achieved with an Eddy 5090 and the stock valve was 298.5cfm @ .600" . With a bunch of other...

I do NOT know how you do it Jim, I really don't. J.Rob

The Eddy 5090 is probably my favourite go to aluminum head--The 75cc chamber is a real bonus if you can build around it which is easy IMO. J.Rob