I finished my blower install...check it out!

[ByronRACE]

Yep, no knuckle dragger here, I stand on my hind legs, thanks for noticing.

I called Vortech asking when they'll have their reverse rotation XX-Trim available and the answer was "never". I then showed them the FE picture and they were as puzzled as I and stated that either the engine is reverse-rotation or a big mistake was made. So, I'm honestly curious what the story is on this thing. If it's a screw-up, so be it, I've made plenty of my own. If it's a counter-clockwise running engine for a boat or something...cool! Never seen an FE powered boat. In any case, that picture peaked my interest and I don't think I'm being unreasonable about inquiring how this combo functions. I can't fathom it's a blunder; not from an organization like Shelby; so I was hoping to learn something. If that's not OK, sorry I asked.

[MidOHasp]

hehehe....

Byron, I think you and I have similar personalities. Since this thread has assolutely nothing to do with small blocks, I have nothing to get up in arms about so I can at least watch and be entertained.

I do think your question is valid, but you are a persistent bugger.

JP

[ByronRACE]

Very persistent, yes. Especially when there is something I don't understand. I'm pretty much a compulsive problem solver. I even fix things that aren't broken and destroy perfectly good things just to understand how they work. That's me.

[HHStang]

Byron is also real helpful to us less skilled than he. He's very patient with stupid (mine anyway) questions. Doesn't seem to be unreasonable at all.....Mike

[MidOHasp]

I never said being a persistent bugger was a bad thing! I said I think we have similar personalities!

I fix stuff that isn't broken and break stuff that is fine to know how it works, too. I just usually deal with less expernsive things.

No need to defend yourself, or defend Byron, Mike, I wasn't being negative!

I want to know the answer on the FE, too!!! I'm curious! I never would've known the blower was set up for reverse rotation, but now that I do, I wanna know what's up!!?!

I said "peace" over in the 385 thread, and contrary to apparent popular belief, I meant it!! Come on guys...

[cobrashoch]

Actually I have seen this sort of thing before too. I'm running a
V-4J Vortec on a 545 cube 385 in a 15 year old Cobra. Motor just went down for a refresh and a dry sump addition. If your interested e-mail me at, rnldshock@aol.com
I don't talk about the iron I run on open forums much because of theft. My car ran damned hard last season before the current upgrades were started. Lets just say I see certain "things" that you will need to address. So if you want to bench race, I'm around.
Later,,,,,,,,,,,,,,,,,,,,,,,,,????
cobrashock

[HighPlainsDrifter]

Nice engineering........

However what is the purpose of putting it a short wheelbase cobra that you can't race anywhere as it has no rollcage?

The 8 second drag cobra in Alberta crashed and is being fixed for the last year, but he is smart enough to have full safety equipment on it.

You will have more HP than physically possible to handle,
as a show car it's nice, but practically a blown big block will kill you.

Good Luck,
Perry

[ByronRACE]

It's in a 96" wheelbase cobra (the long wheelbase version, not to say that 96" is long, but it is longer than a normal cobra).

It has no roll cage *yet*. And, it's not running *yet*.

It also has more frame than most, and it much heavier than most.

What physical problem are you referring to regarding handling the power? The chassis and power train will take it. Barring mechanical failure, it is as sound as any high horsepower nut-job car. Most 8 second drag cars crash sooner or later; whether it's a cobra or not.

Sure, this power level is nuts. That's why it will be used for straight line, bragging rights, ect...and the blow-off will be set to a much more sane level on the street. Just because it *can* make 1000hp doesn't mean it'll be configured like that all the time. At the turn of a knob, I can go from 3psi to 17psi at will. At 3psi; it should make about 600rw...which is plenty.

B

[cobrashoch]

Better listen to Perry on this one Byron. I know I've spent just about 1/2 as much money on my car making it run straight and hooking hard as I did on the motor. Part of my required upgrades are safety stuff the NHRA has mandated to me, and my car is on a 99/100 wheelbase. And for goodness sake please understand that a Cobra is NOT a street rod. It's a all together different animal.
Remember too that aprox. 1/3 to 1/2 of the original Cobra owners that owned these cars either totaled the car or killed themselves. And they thought that they "knew" too!
That being said I liked the old Stallions. Nice thick bodys and frames. For drag racing the stock Stallion frame will flex at the back from side to side. You need to look there for safetys sake. When you are done with this project, it's going to weigh more than you will want to admit I'd bet. That's O.K. though, mine is a bit on the high side weight wise too. At least by Cobra standards anyhow.
Good luck on finding a manual trans. that will live if you choose to buzz that 429 motor hard. I think I'd be calling around on that one, and be prepaired to spend some change. That's mainly why I went to a auto in my case. Good luck with your project. BTW. I see you chose B.T. Chevy port heads. Good choice, I'd say.
cobrashock

[ByronRACE]

Thank you for the concern, honestly. And, I am listening to every word, I promise.

I assure you, I know my limits...and they are well below what this mill is capable of. I'm certain after a few giggle-factor dyno pulls and a few cautious journeys into the throttle discovering that it can indeed do a burnout starting at 80mph, I'll dial it back. I'm not "serious" about drag racing, this is purely for enjoyment. In fact, I wouldn't be suprised if this car never sees a set of drag slicks. At most, it will see drag radials. You can't get real drag tires on 17" rims, and that's what it takes to clear my brakes.

I've driven a lot of stupid cars including several fox-body mustangs making over 700hp to the tires, (some with stock unibody...yikes) as well as some vintage iron making power above and beyond that. I've also been 170+mph in my own cars at the Silver State. I know it's nutty. I know it's dangerous. I'll use my brain and keep an eye on things, I don't have a death wish...even if the car looks like I might.

I'll have to take some pictures of the rear of the car the next time to body is off. There appears to be some non-stock cross-bracing back there that the previous owner welded in. I'd be interested in getting your take on it if you're familiar with the stallion frame.

B

[MAXVELO]

byronRACE, Im glad to know that Im not the only lunatic around! Maybe theres a place we can both seek therapy. Maybe we can get a 2 for 1 deal! Have you seen my gallery?

[ByronRACE]

Yep! I'm amazed you fit a conventional rotation blower in there and still were able to get enough air to feed in the inlet side to make that kind of power...and retained the stock cross member! Unreal! Congratulations! The power numbers are also very impressive. I've spun a V1 and V2 Vortech S-Trim to oblivion on some pretty big Windsors and havn't touched those numbers, your combo obviously works well. It makes me wonder what this V7-JT is going to do. I'm starting with 80/40 cog, but I also have a 30tooth driven pulley that takes the blower to the design limit. Yikes.

I was the guy that emailed you asking how you managed to put the small-hoop rollbar in a west-coast cobra since the fuel tank is right there where the tubes enter the body.

Have you had any premature chassis wear or component failure with all that power? What transmission?

Byron

[cobrashoch]

RE; Reverse rotation. Your thinking is not wrong. But remember too, to get the supercharger to pump right only reguires a extra pulley,belt and idler. And that's not a bad idea either. That way if you throw a supercharger belt you can struggle home because the other stuff is on a seperate system. Direction of the rotation is not a problem, really. Think about it.
cobrashock

[MAXVELO]

ByronRACE, I do remember the post now. Its actually a T-Trim. I was mistaken. The T flows a little more than the S. The Tranny is a TCI C-6 with a reverse pattern shifter. I havent seen or noticed any chassis stress and I have checked. Im going to be adding an intercooler when the car is down for the winter.

[ByronRACE]

Direction of rotation doesn't matter if you don't care how much air it moves; or how hot that air gets...yes, it will move air.

This pump is not straight-vane. Efficiency drops sharply if the helical impeller is spun backwards. Also, the direction of the impeller is reverse of the direction of the discharge vent, the pump becomes very inefficient because it's throwing the air in the direction opposite the discharge. If you spun the hell out of an XX-Trim backwards, you'd probably get about half the flow it's capable of, and lots more heat, and possibly put the impeller and engine itself at risk (vanes are not designed to resist flex in that direction, they break, go through motor).

You would make more power with a smaller YS-Trim (what I'm running), which is designed for reverse rotation. And, if you really want a blower this big and need reverse rotation, Procharger has offerings in this flow range and bigger.

Two belts and an idler won't fix this problem unless you drive the idler on the back side of the belt, give it a good 50% wrap, then bring the belt back around and return it to the crank with more idlers and all. It would be messy. If you're going to do that, you may as well just drive the blower off the back-side of the belt using a double-sided cog belt (if you can find one). I'm not aware of any double-faced cog belts that can handle this kind of drive power. And, most power cog belts come apart when back-bent. That's why I went with a 50mm wide GT-2 belt; it's one of the few that can be back-bent. My catalog doesn't show any double-faced GT2's however. It would be a challenge, and would take 2 idlers I think...but it could be done if you could source the belt.

In any event, yeah, it bugs me. If you spin it backwards, sure...it'll move some air. I'm hoping whoever put this together didn't say "Yeah, it's backwards but eh, who cares"...not on an engine this nice. That would indeed be a shame.

Byron

[Power Surge]

Byron, I don't know anything about the motor Chris posted, but I can tell you that the 427 WAS used in boat motors. So reverse rotation FEs do exsist.

Don't forget you promised me the first drive in Project Ludicrous Speed at the next GTG .

Oh, and "Hi Chris"

[VitaminC]

Byron,

Sal is correct. At one point Chris Craft used twin 427's, one of which was counter-rotating.

I don't know who made that particular supercharger setup in question nor which way the blower or engine are set up to spin. It has been sitting around for a long while. You get the sharp eyes award though!

The superchargers I build spin the correct direction... you've tuned and driven a few of them yourself, I am happy to say!

(and, Hi Sal! )

[ByronRACE]

XX-Trim Blown FE powered injected speed boat my god; imagine the screw you could put behind that thing! That would rock; and would explain everything. I'm dying to see more pics of the install.

Byron

[SFfiredog]

Byron,
Jeez, not another 385 series with BT raised port heads with a backwards Vortec V7-JT with custom mounts in a Cobra with a Viper 6-speed
Stop boring me with this common-place mundane crap.
Show me some photos of a '69 Camaro with fake Z-28 stripes and a 350 with chrome valve covers; now that's something you don't see every day
Oh yeah, I had Joe C stand on MY custom blower bracket (at least 500 lbs) and it only deflected .00000000003", so there!

C-ya at the Birthday party,
--Mike

[ByronRACE]

LOL; now THAT was sarcasm.

Take note people; that's how it's done!

Pffft!

B