Attention all BOOSTED SHOs.

[auto.guru]

I am creating this topic in hopes that many DIYs and enthusiasts can relate to this on a periodic basis. For those of you who have boosted your SHO - you generally have been, or thought about this already. That is why i am relying on you to help give some input.

I have thoughts of doing an engine build this winter. I can pick up a spare running motor for about $200. Its a good donor and i can strip it down in hopes to build it for cheaper with everyones knowledge here.

The Goal:
Bored
Cammed
Intake/Exhaust valves
Port and Polished Intake
Boosted (Procharger, Supercharger, or Turbo)
If no boost, then NOS.

If everyone tries their hardest, we can build the best all around SHO motor just by everyones opinion. We can call this the "community choice" for each individual part on the motor.
*Might even be able to make it a sticky and have it say Communities Choice.

Eitherway....
What is the route to go? I have seen videos on youtube of vortec procharged SHOs only doing 14.6/8. From the stock 15.6 i ran at the track this year, it is not worth the $3000 for a procharger. The 2nd gen SHO was running 438hp. Something just did not seem right with the car.
Who out there has put a massive turbo on the motor? To what success did you have?
There is a guy with a gen1 who put an Eaton M90 supercharger on his motor. This thing screams bad-a** and i bet it would do the same on the track. http://www.youtube.com/watch?v=7XvieyAIT-M

What are the positives and negatives to boring an SHO motor?
Whats the price range we are talking to make this motor?

throw in your ideas people. I would love to build a sticky page for the best all around motor that we can all theoretically make with words. Not only for power wise but also for those owners who have a tight pocketbook.

 

[SHOspazz92]

You clearly have not grasped the concept that the SHO is very traction limited. Add 200+ Horsepower over stock and what do you think happens? Did you happen to notice what the trap speed was of that SHO that ran a 14.6 or 3 or whatever? That should tell you that car was making A LOT of power.

Traction was obviously limited. You have a lot of research to do if you expect the SHO to be a stellar 1/4 car.

 

[ZooYoost]

With a "monster turbo" you get no traction until your into 3rd gear. Trust me

 

[crazy_canadian]

Heck I have a stock engine, with a Quaife differential, Koni/eibach suspension, and I did 15.07 on the 1/4, with a trap speed of 96.4 MPH.
I get absolutly no traction in fisrt gear on slighly wet pavement, and can't shift hard into second or I lose traction and hit the rev limiter if I floor it.
I can't imagine what it'll look like when my car will be boosted, but it will be a lot of fun. And a nightmare for my front tires.

 

[yamahaSHO]

The 438whp car you're talking about had a ****** dragstip driver, non functioning secondaries and was at 5,800 ASL. The trap speeds for the night were 107-110 mph (14.4 @ 110) and my stock SHO with an exhaust at the same track had a best of 15.8@88.

At that track, your 15.6 would be knocking on 17's door.

FYI: The 438whp car has a Vortech supercharger, not a ProCharger.

 

[SVOFANATIC]

Ok something's up this makes no sense I did a 14.8 at 95 at the strip and I had a basically stock car. Only what's in my sig and I ran that fast my average was 15.0's. And this was only my second time ever down a strip in any car.

 

[yamahaSHO]

You should probably read all posts in a thread.

 

[SVOFANATIC]

You should probably know I did. I'm not a lazy a$$.

Anyway back on topic I'm personaly a turbo guy I like superchargers but not the efficiency they have. If your willing to spend the time and money on it that's the way I would go.

 

[yamahaSHO]

Then what don't you understand?

 

[B-savage]

I am also considering a turbo install.... though im not sure what would be best for my 95 mtx. im shooting for about 8-10 psi so i wouldnt need a $3000 turbonetics but i dont want something thats going to blow after 5 miles. any recommendations?

 

[NEp8ntballer]

this thread makes me laugh...

Jason, do you think Lance could throw those wheels on the next E-4 that goes to Beale?

 

[SHOspazz92]

Ok something's up this makes no sense I did a 14.8 at 95 at the strip and I had a basically stock car. Only what's in my sig and I ran that fast my average was 15.0's. And this was only my second time ever down a strip in any car.

You ever driven a Full weight, 450+ Horsepower car that's front wheel drive down the drag? No? Didn't think so. Again, look at the trap speeds. 110 MPH, That manes if that if the car could hook up, it would do mid 12's, EASY. However getting any high horsepower SHO to hook down the trip is very tough. So with that said, what don't you get?

My completely gutted, low powered, Nitrous SHO is not a easy car to get traction out of, I can imagine my supercharged SHO will be a lot worse.

And also, a 3.2 Swapped SHO is not "Basically stock". Basically stock would be my 95 MTX, that had no engine mods except for a Y-Pipe and went 14.7@95.

-Sam

 

[yamahaSHO]

Sam, remember that 110 was at much higher elevation than what SVOFANATIC was running at. To add to that, as seen in the videos, my first run down the strip resulted in a snapped axle on a 1-2 shift. After that, I didn't have another spare axle to get me home on, so I had to drive somewhat nicely.

Most already know who owns the 438whp SHO, but for those who don't... I'll give it another go down the strip next year. Aside from what was seen in the video, the secondaries are plugged in now, I'll have more traction, and the car is running well... Driver mod may be an issue.

Chris, I'll ask Lance tomorrow. I take it you're interested? I offered them to Clay since he's buying my suspension, but I'm not sure he can swing it in the rather quick time I'd like them gone.

 

[NEp8ntballer]

indeed

 

[auto.guru]

look... this is not an argument forum.
im not looking to push another 200hp out of my motor...

i did 15.7 at 101mph. This was a stock 200,000 mile motor with a worn out clutch.

The point of this topic was to gather ideas from all the gear heads to make a more powerful than stock motor, and to go a bit faster than the 15.7 stock time i had.

Do i do a 3.2 swap? do i take my 3.0 and bore it out, clean it, and make a brand new motor out of it? Hmm???
What im trying to ask is....
What to do!!!!
Port n polish the intakes? turbo or supercharger? forget boost and go nos? Whats the max to bore a 3.0L? whats the best piston rings to get and what cams should i throw in there? Do i leave the heads alone or get them shaved and ported? Are there inake/exhaust valve upgrades?

this is meant to be a list for "newbies" to come to and say "HEY!, i see my options here in a nice organized list, and i can see the HP increase ill get for the price that it costs." Without them having to search the forum on 18 different topics just to get the info they want. Make this easy for them!!!! (and myself)

 

[whiteman_01]

I think first, you need to do all the maintenance the car needs. That will help you quite a bit. Then, you need to decide, boost, or N/A, for which i would assume boost.

 

[yamahaSHO]

101 mph??? Not buying it.

As far as the information... It's all here. Research what others have done and start from there. The car you referenced earlier is fairly well documented here.

The reason you need to do the research is because there is no set path. Something I would do, may not agree with what others would do. Boost is easy and the stock motor takes well to it. If you're not looking for 200+ more HP, then freshen up your motor and boost it with the boost-maker you choose. If you prefer a turbo, there is a thread (that may even be a sticky) just for you.


In short:
-Healthy motor
-Boost-maker
-Charge cooling (preferably)
-Fuel
-Tuning
-Clutch
-See what breaks

This process can pretty much be used with any engine.

 

[LOUDSHO92]

It comes down to what you want. If you are looking for a drag car the SHO may not be your best bet. You can make plenty of power but the platform is the issue. If you want a road coursing car the SHO is the ticket.

If you want a fast quarter mile time you will have to do some of the FWD drag tricks to make it. The Gen3 subframe will possibly help with wheel hop. You will also need to work on weight transfer from the launch.

Determine what you want from the car and go from there.

 

[jayro]

I would start with a 3.2 block. If you are going to boost it or spray it I wouldn't bore it out. Even if you bore it you get a 3.3 (actually a 3.26 I believe). Past that you run into needing a custom head gasket. With a healthy motor you can run in the 7-9 psi range as long as your tune is right. There are people that have run more on a stock motor succefully. You would also need to upgrade your fuel system. If you spray it you can work your way up to a 100 shot (dry). Just make sure you have a good fuel pump and copper plugs atleast 1 range colder. Forged pistons are available if you want to run more boost or if you want to bump up the compression.

 

[auto.guru]

jayro... exactly what i needed. its a start...

Why not go with a wet system? wet is safter than dry - and the new fuel pump will meet the standards to shoot a 100 shot. Ill have to change the plugs but thats not a big deal.
Its good to know about the motor build. But if you are going to put forged pistons in there, why not just bore the motor out and put new forged in it? and then boost it? If you rebuild it - you know its new. My current motor has 200k on it and its about time for it to RIP.