BB stroker 6bbl dyno saga………thoughts??

[92b]

That would be a sensible feature, given all the possibilities for it to be incorrect, but what do I know....

Moving the phasing with an adjustable rotor would be easiest. For distributors that don't have adjustable rotors available I think you could still index the rotor at the vacuum advance, which won't be used any more anyway. Instead of moving the rotor tip you would lengthen (I think) the arm on the vac advance. Or fab up a lock out plate.

 

[Phreakish]

I've had days like that. EFI can be a ***** sometimes. I try to avoid FiTech systems when possible, they aren't very easy to work with. Holley at least lets you run a data log so you can review what is going on.

The engine sounded like the timing was way off. I've shown up at customer sites with the engine running like that. When the customer hangs all over you it is hard to think clear. Phasing the rotor doesn't usually solve anything but it can. I prefer to drill a hole in the distributor cap near #1 and shine the timing light in there. Then you can see if the rotor is pointed in the correct direction.

Fitech systems can also datalog. Or at least mine does. To start/stop a log the button on the joystick is pressed. I think there's a way to alter the values that get recorded. It's been a while since I did it though and can't recall the details.
Their systems are not very intuitive though and the timing can be tough to get working perfectly, to say nothing of the build quality. On mine I installed an extra negative battery cable to one of the carb studs.

 

[RAMM]

ohhhhh i finally saw the second Hemi video last night... and man..i hope RAMM didn't see it..... they **** on that motor bad.. basically said he's full of ****.. but they don't know his name... so.. but still

Yep, somehow I claimed it made 740hp on my dyno with the Marine intake and 2xHolleys which I never did make that claim he has my dyno sheet in the first video. Either way it made close to 700hp after putting 8 sleeves in it ????? Lol J.Rob

 

[RAMM]

oh.. if you guys didn't see the second hemi video... he put 8 sleeves in it also.... seems the whole motor was trash somehow

Yep big pile of junk that I couldn't test properly until I rebuilt my absorber to be able to load it @ 3500rpm. J.Rob

 

[Icetech]

Yep big pile of junk that I couldn't test properly until I rebuilt my absorber to be able to load it @ 3500rpm. J.Rob

I know.... that whole thing just annoys me

 

[Nat]

Well, all of these videos NOW are only for entertainment anyway. I liked Nick at first. But later on, you can sure tell he's doin what the writers and producers are tellin him. Caint blame him, really. I'm sure he'$ gettin paid.

there are no writers or producers he is independent , not getting paid except for what you tube brings in and the work at the shop . stop talking BS

 

[mosleyme]

At the end they say it’s a 493 with TF270’s, I don’t recall if there was any cam info.

When you have the electronics delaying the distributor pick up trigger to manipulate the timing, it can put rotor to terminal phasing off pretty far.

270's are max wedge port, you would have to heavily modify the six pack intake. Probably 240's. 493ci and 600hp, more than likely.

 

[RustyRatRod]

there are no writers or producers he is independent , not getting paid except for what you tube brings in and the work at the shop . stop talking BS

And you know there are no writers how, exactly?

 

[PRH]

270's are max wedge port, you would have to heavily modify the six pack intake. Probably 240's. 493ci and 600hp, more than likely.

I’m just relaying what was stated in the video.

I realize it makes more sense that they’d be 240’s, but that’s not what was said.

Plus, I believe it’s cnc’d into the exhaust side of the heads.

As below-

 

[AndyF]

I missed that. 270's with a six pack intake is a bad idea. Makes me wonder if the intake is actually sealed up to the ports properly.

 

[RAMM]

I missed that. 270's with a six pack intake is a bad idea. Makes me wonder if the intake is actually sealed up to the ports properly.

If the guy that built that engine is who I think it is...he definitely addressed that. I would like to know what he did there now that I think about it. J.Rob

 

[PRH]

Looking at the engine in the video, it looks to me like the heads are indeed the 270’s.
Compared to the 240’s, the 270’s have an extended intake mounting surface and raised runners, which appears to be the case to my eyes for the heads on the engine.

270’s-

240’s-
On the 240’s the valve cover rail actually overhangs the intake mounting surface…….which is not what’s going on with the video engine(as seen in the first pic).

 

[fishmens67]

Interesting

 

[AndyF]

If the guy that built that engine is who I think it is...he definitely addressed that. I would like to know what he did there now that I think about it. J.Rob

Yeah, not an easy fix. An aluminum six pack intake can be welded up but it is a lot of work. And then some sort of valley pan needs to be fabricated since their is not a MW version of the stamped pan.

I scrolled thru the video trying to find some clues. Looks like a billet two piece valley pan (might be one of mine). So that means the cross over was machined off the six pack intake. They might have used my AR397 MW size bat wings to seal up the manifold to the heads and valley plate. No idea how they sealed the intake to the ports.

 

[PRH]

Seems like this would make as much sense as any to use with the 270 heads-

Trick Flow Specialties TFS-61600830 Trick Flow® Valley Plates | Trick Flow Specialties

 

[Icetech]

I have a question... soo say 240s vs. 270s... do those bigger ports and all that come into play say from 2000-5000 or is there a point where it's pretty equal and then the big ports really take off? like 6k+

 

[33IMP]

I have a question... soo say 240s vs. 270s... do those bigger ports and all that come into play say from 2000-5000 or is there a point where it's pretty equal and then the big ports really take off? like 6k+

I saw an engine masters (I'll try to find the episode #) where they compared a 240 head to the 270 .
The 270 was better everywhere in the curve, about 20 hp if I remember right. Not surprising considering how flow limited bbm heads are.

 

[Icetech]

I saw an engine masters (I'll try to find the episode #) where they compared a 240 head to the 270 .
The 270 was better everywhere in the curve, about 20 hp if I remember right. Not surprising considering how flow limited bbm heads are.

ah ok... i was just wondering if the cost of going 270 is worth it for a normal street type guy that isn't spining 7k+

 

[33IMP]

ah ok... i was just wondering if the cost of going 270 is worth it for a normal street type guy that isn't spining 7k+

Well, there's the cost of the max-port intake too. There's a much better intake selection for the 240s, and you could probably use what most 440 guys already have.
I think my dominator pattern super Victor was around $500, and I think it's a bit more now ($600). Plus the special valley pans aren't cheap for the max port. A 240 can use a stocker valley pan.

 

[Icetech]

Well, there's the cost of the max-port intake too. There's a much better intake selection for the 240s, and you could probably use what most 440 guys already have.
I think my dominator pattern super Victor was around $500, and I think it's a bit more now. Plus the special valley pans aren't cheap for the max port. A 240 can use a stocker valley pan.

yeah.. i was thinking of all the extra cost vs. end goal.... i have no desire to run a big block again, was just following the conversation.

 

[AndyF]

I have a question... soo say 240s vs. 270s... do those bigger ports and all that come into play say from 2000-5000 or is there a point where it's pretty equal and then the big ports really take off? like 6k+

I'd say that the bigger port 270 heads are useless when they are sucking thru a six pack intake. It is silly to have big ports downstream from a dual plane cork. The 270 heads work really nice when you have a ported single plane intake or a really well designed race intake. The intake manifold has to be really good in order for the 270 heads to pick up power over the 240 heads. I did a bunch of dyno testing with 240 vs 270 heads back when they first came out and the intake manifold turns out to be a very important part of the equation.