shelbyinyoface

hey guys this is just some dumb **** i was thinking up...
but do you think a 428 super cobra jet would fit into an rx7 fd3s...
if you think this is stupid please feel free to call me a dumb ***

TurboTagTeam

With enough time and money you could put a detriot deisel in an FD. Your not a dumb *** if you make it happen.

shelbyinyoface

what do u think the performence would be like

XxMerlinxX

iTrader: (2)

Why not throw it in a mustang where it belongs?

shelbyinyoface

cuz a mustang can't handle for ****

Narfle

iTrader: (16)

Why would you use such an inferior engine? The ford 427 kicks the **** out of the 428 day in and day out.

rynberg

And how well do you think an FD is going to handle with that big-block pig iron motor up front? That motor has too much low-end torque to work in an FD.

I really wish people would start thinking if they should do something instead of if they can do something.

Crash Test Joey

iTrader: (1)

That definitely depends on the application. It's like saying an RX7 is slow - some are, some aren't.


Where exactly is there a chart that lists the cut off for too much torque? I'm curious to find out if my car shouldn't work because it has more torque than the 428 in question

rynberg

What's the point of having so much low end torque that you can't put it to the ground? I tend to notice V8 guys find spinning the rear tires fruitlessly to be more entertaining than I do.

comradegiant

I've always thought that if you are going to put a V8 in an RX-7 it should be a Ford 302.

Sure its not the torquiest or the most powerful, but its the best bang for the buck. And its small, to my knowledge the smallest V-8 out there in terms of external dimensions.

digitalsolo

iTrader: (2)

Sub 1.6 second 60's times arne't what I call unable to put it to the ground, but perhaps we have different measuring sticks.

wingsfan

Your LS1 is making more than that? They were rated at ~440 ft lbs.

wingsfan

Nonsense.

But I agree with you. That motor is too damn heavy for an FD.

Crash Test Joey

iTrader: (1)

Shhhh! I've got some guys thinking that just because they have a single turbo instead of stock twins they will "put a whoopin' on me" and others thinking I'm going to run 9's on the stock heads. You're gonna ruin the fun!

But seriously, anyone who is spinning their wheels instead of hooking has a setup issue, not too much torque. You can have too much clutch, too much air in your tires, too much preload in your shocks... but no FD will ever have too much torque.

And yes, an iron 428 weighs too much for anything but a dedicated drag car. But it could still be a fun drag car

wingsfan

Sorry. Didn't mean to spoil your fun. You can totally run 9s on stock heads. What was I thinking?

It just dawned on me that the 440 lbs ft rating is at the flywheel, or the equivalent of ~375rwtq assuming 15% drivetrain losses. My cam only motor made that.


Sure, At the strip. I'm not going to put around town without the swaybar connected and 15psi in the tires though.

Put me in the camp that says an FD is wasted if you're just going to use it to drag race. Maybe that's a tad elitist, but I think they were meant to turn...and I'm not a big drag racing fan.

razorback

we will see how my fc performs with a late 60s mopar pig iron motor

Crash Test Joey

iTrader: (1)

With enough nitrous and weight reduction

Mine hasn't been tuned and dynoed yet, but it will probably be in that neighborhood as well.



I have before, but not with the FD. Where I live you have to leave town to find some decent turns so it's really not as far-fetched as it sounds.


And I support your right to your opinion, something that's as tough to come by on this forum as ever. I bought mine to build a daily driver, which some would say is as much of a waste as a drag car. I haven't decided what's going to happen at this point since I bought the C6, but whatever I do I know I'll have more torque than the stock engine, and I assure you it won't go to waste

sereneseven

DO IT!!!!!do it do it, and then send pics, i had a 428 in a 66 t-bird that put down 580 @ the wheels too bad the car weighed nearly 4000lbs but i never had issues with wheel spin let me know if you need any engine parts i still have a ton of leftover bits from that motor.

wingsfan

Or a couple solid fuel rockets bolted to the roof.

What cam did you choose? You already have longtubes, right? Plans to swap the heads?

But you’ll kill your mileage with those underinflated tires.

Support, or an opinion?

Nah. You’d at least have to make a few turns in a DD.

I know what I’d do. Goodbye FD…hello boost.
http://www.lgmotorsports.com/catalog...oducts_id=1557

No doubt.

Merc63

The 427 and 428 used the same blocks. In fact, most of the later Shelby 427 Cobras used 428s, stock. The 428 Cj and 428 SCJ were more powerful than the 427 engines.

Replacing the heads and intake (which comprises part of each head) with aluminum aftermarket parts makes teh 427/428 weigh about the same aas an iron small block Chevy, and we've already seen that even those don't really upset the balance of an FC.

The problem with the 427/428, however, is physical dimensions. It'd fit in an FC pretty well, but not sure about an FD, due to the limited height you have to work with.

As for the iron engines making it only a drag car, I built this back in the late '80s:





460 powered '81 Fox Mustang autocross car. 700 lb ft of torque, almost 600 daily driver hp. It ran 11s with a 2.73 final drive ratio... with the 16x8 Ronals and Yokohama A008 tires, it pulled over 1 G laterally.

the chassis still sucked and even with good pads, the stock brakes sucked. Still, it was pretty good on tight autocross tracks, and other than brakes outstanding on a road course.

to think that an engine like it in an FC or FD would be worse is laughable. better chassis, vastly better brakes, and the engine woudl sit back farther for much better balance.

Crash Test Joey

iTrader: (1)

I love Mythbusters


Just a Hot Cam. But I have a nitrous kit also, to give it a little more bump I have the 1 7/8 JTR's and a pretty free-flowing Magnaflow setup. Heads may come later, stock for now.


I live my life 1/4 mile at a time


Both. But I don't think I want to know what you're using for support


My Monte Carlo did it for two years on skinnies with no front sway bar, an iron motor and worn out BFG Drag Radials


I promised my wife her Mustang GT could get a supercharger before I did anything substantial to the C6.

wingsfan

Don't we all? I think everyone would like to have a job where you get paid to blow **** up.

You fool! My wife got new floors for the house for my LS7. I think I came out ahead.

Crash Test Joey

iTrader: (1)

If I don't make her car faster, she'll drive mine more. Keeping the car safe in the garage while I'm not using it = priceless.

wingsfan

Gotcha. I don't have that problem. Mine can't even drive a stick (and doesn't want to learn).

I guess you know what you've got to do then.

shelbyinyoface

dude......... i'm left with out words ........ what you just said makes me wanna go out and buy a aluminum 428 super cobra jet but the damn thing cost like 10 grand and up......