Question...Anyone ever put a supercharger on a 351w (Bronco) Vortec or powerdyne? I'm looking at the powerdyne with some minor engine work ( little porting, larger cam and forged pistons for strength). Anyone have some good results to share? I am looking to get around 400Hp. Am I out of the ballpark?




88 Bronco 351w, MSD6A, K/N, Headman Headers, 3 1/2 Flowmaster, 4in Lift, 33in CooperMT, ALWAYS LOOKING FOR MORE POWER

 

If I was you I'd do all of the other work first, I do know one thing though, my friend has a 98 suburban pretty much modded to the max with a whipple charger, and his dad drives a stock 2000 C-5 corvette 6-speed, the burban is faster in a red light race...but the burban has a LOT more money into it than the vette does. Personally I'd never supercharge a motor, why not put flat top pistons and GT-40P heads on the puppy and see what that does? Remember if you do get a supercharger you will need a mass air conversion kit so the computer will be able to see what you did!

1995 F-150XL SC/SB
http://members.sounddomain.com/blind
5-Star Rated F-150 (Big Stereo)

 

Hey thanks! But I can't put a whole bunch of mods on. NYS inspection would not like that. I reasearched this I could only go with a comp cam 50 state legal and some minor head work. then if I supercharge it it will still pass.I was told by a speed shop I wouldnt need mass air. I think I'll call Powerdyne. Beleive me I would LOVE to go with ratical heads, cam etc.....but it wont happen. Any other LESS EXPENSIVE ideas would be great.




88 Bronco 351w, MSD6A, K/N, Headman Headers, 3 1/2 Flowmaster, 4in Lift, 33in CooperMT, ALWAYS LOOKING FOR MORE POWER

 

For about $40 I bought a porting/polishing kit for my dremal out of a mail order catelog...cant remember which but I'm sure summit or something like that...then I went to town on my new upper/lower intakes (found a set at a junkyard with oval ports as opposed to the stock weird shaped ones) matched the holes to the gasket and smoothed as far as I could reach with like 20-40 grit sandpaper bits, dont go too smooth or you will disrupt the airflow, I then did the same to the heads, but sadly those are still the stock ones on my 5.0, but for a 5.0 its got some pep with 250 dyno'd horses

1995 F-150XL SC/SB
http://members.sounddomain.com/blind
5-Star Rated F-150 (Big Stereo)

 

By porting my heads myself and having a machine shop put larger (chevy) valves in what kind of gain do you think I'm looking at?


88 Bronco 351w, MSD6A, K/N, Headman Headers, 3 1/2 Flowmaster, 4in Lift, 33in CooperMT, ALWAYS LOOKING FOR MORE POWER

 

seat of the pants you'd notice, but I wouldn't say anymore than 30 horses, thats what I think I picked up doing mine, but I didn't replace the valves.

1995 F-150XL SC/SB
http://members.sounddomain.com/blind
5-Star Rated F-150 (Big Stereo)

 

I had a local head shop re-do (majorly) my stock heads, mainly the exhaust valve, I added a larger throttle body & injectors, K&N filter (open element), MSD Ignition (6A box, coil and wires) and a complete exhaust (motorsport headers, racing cat and flowmaster exhaust). My '95 F-150 4x4 w/ 351w is quicker in the 1/4 mile, and runs better than my brother's F-350 4x4 w/ 351w and Vortech supercharger. The guy that owns the shop has an 88 f-150 with the mass air'd 351 that puts out 680 hp at the ground on pump gas! He doesn't have a supercharger either. He said that his motor has a 20 over boar, trickflow heads and intake, larger throttle body and injectors. That and the same air filter and exhaust setup that I have. He did my heads for $500 and said the Trickflow's run around $1000. Mainly it depends on how many miles you have on the motor, a low mile engine will run better with a supercharger than a tired one. I personally would rather spend less money and build the motor than spend $2500-3000 on a supercharger that doesn't really do that much more for me in the end. My 2 cents though...

Karl Jett
'95 F-150 Eddie Bauer ext cab 4x4, 33's
slightly worked 351 with 350hp at the ground on 3.55's!!!

 

I'm not ******* you, but this guy who owns this shop with 680hp at the ground: What tranny can take this kind of punishment in order to measure the to ground hp. Surely not the mazda 5 speed. Again I am seriously wondering what kind of tranny work he has done.

Daywalker
92' F-250 351 4x4 xlt 4.10 5spd supercab longbed

 

Couldn't a C6 hold that power if beefed up properly? My friends `71 mustang with 351C and C6 seems to be a pretty good combo.

1995 F-150XL SC/SB
http://members.sounddomain.com/blind
5-Star Rated F-150 (Big Stereo)

 

[font size="1" color="#FF0000"]LAST EDITED ON 09-Mar-01 AT 08:08 AM (EST)[/font][p]You are correct, the Mazda tranny couldn't hold the power. He has a JET prepped C6, and a 9" rear. I think that if the guy's been in the racing business for the last 15 years or so, then he'd know a thing or 2 about building good combinations.

My tranny is a build E4OD, and it has no problems with the power and abuse that I give it.

Karl Jett
'95 F-150 Eddie Bauer ext cab 4x4, 33's
slightly worked 351 with 350hp at the ground on 3.55's!!!

 

OK, I tried to resist. I don't think there is any way that anyone is going to get 680hp at the rear wheels with a naturally aspirated 351W on pump gas. Maybe with a 300hp nitrous kit?

DannyP
89 F-150 4x4 former EFI I-6 now carbed 351W, Edelbrock heads,cam,intake,carb.
MSD 6A, ZF, Sterling 10.25 with 3.55L's.

 

Guess again, Do you think most roundy-round racers run nitrous??? They place is called Don's Performance Heads, it's located in Woodbridge, VA. Give Don a call and ask him about his truck. No juice, no supercharger, all motor. Any good older race engine builder can give you the tips and tricks to beef your hp the old way, with all motor! The dyno that we used is located across the street from him in another performance shop.

Karl Jett
'95 F-150 Eddie Bauer ext cab 4x4, 33's
slightly worked 351 with 350hp at the ground on 3.55's!!!

 

If 680hp was obtainable with pump gas and a streetable cam in a 351, there would be little need for engines any larger. No, NASCAR doesn't use nitrous on their cars, but they also turn near 10,000 rpm and definitely don't run pump gas. To get 680hp at the rear wheel would require 750hp (I'm guessing) at the flywheel.
Someone with a Desktop Dyno care to run the numbers?
I am sure some impressive numbers can be achieved with mass air fuel injection especially if you ignore emission requirements and program it strictly for power, but I still don't believe 680hp is achievable.

DannyP
89 F-150 4x4 former EFI I-6 now carbed 351W, Edelbrock heads,cam,intake,carb.
MSD 6A, ZF, Sterling 10.25 with 3.55L's.

 

Hi all,
Been reading these posts, and enjoying what has been said. I have a 351 in process of getting built. Basically, I bought a 94 351 redline marine engine with 15 hours of run time, rated at 285 horse. I took off the gt40 iron heads and am putting on gt40 X302 heads. When I took of the heads, I found the pistons came to the top of the block. I don't know if the engine is decked or the pistons are taller than standard for the marine engine. I am also installing hydraulic roller cam setup from Ford, with custom ground cam. Spec's on cam are 266 advertised duration with .533 lift. Lobe centers are 105 degrees apart and intake lobe is set at 101 degrees. I have a 9.3 to 9.5 compression ratio. I installed all this info into my desktop dyno, with four barrel 660 carb, dual performance exhaust. With flow figures for stock X302 heads the motor supposedly will produce 415 horse at 5500 RPM and 440 foot lbs of torque at 4000 RPM. I have heard conflicting reports about the validity of these programs, but My motor is what I consider a mild street motor. On paper it works very well, regardless it should make the old Ford shake, rattle and roll. I would very much like to have a blower on it, but I cannot justify it. I do have a blown vehicle, and it impresses me very much. Park Avenue Ultra, with 3.8 with supercharger. This car gets 25 to 30 mile to the gallon on the highway, and over 20 MPG combination driving. In addition, it jumps up and scats when called on to do so. I even thought about trying to install one of these in my 64 f100. For 231 cubic inches these are impressive.
Rich

 

Ok guys now back to MY question! (Kjett) I too can't believe 680hp with no supercharger or nitro. Maybe with EXTENSIVE engine work it is possable. But you guys forgot to factor in the EMISSIONS problem. I live in NY state and there is no way in hell im getting that much without pulling off all the smog stuff. Thats why I was asking about the supercharger. By doing minor engine work ( Comp cam , porting, already have headers, MSD, and KN ) what do you think I can get?

Thanks Guys.......



88 Bronco 351w, MSD6A, K/N, Headman Headers, 3 1/2 Flowmaster, 4in Lift, 33in CooperMT, ALWAYS LOOKING FOR MORE POWER