too high compression for a blower?

x182dan

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I have a chance to get a bolt on blower for my 95 stang. He wants $1,000 for the blower and its still on his 95 cobra so I can hear it run. Its a vortec. I can get every single nut/bolt from the sc setup. Now my question is even though its a great deal will my motor handle it? Right now my car is actually at the tuner getting tuned for my stroker motor. Its a 331 stroker, with forged pistons, rods, and cast crank. It has 10:1 compression and I currently have stock twisted wedge heads, 36lb injectors, 75pro-m, centerforce dual friction clutch, stock t5, stock rearend with 410s and eaton diff. Realistically what will need to be done to the car when I put the blower on there.
 

BigTang

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run e85 at low boost 4psi(?) would be the easiest answer

The other way would be to open up the combustion chamber on the heads a little. Its not as effective as a piston swap but would be much cheaper since you'd only be out the cost of top end gaskets. You could also pick up a custom cam w/ a profile that will bleed off some cylinder pressure to help out.

you'll also be in the market for a new trans pretty soon.
 

Jrgunn5150

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10.3:1, 10 psi, no intercooler, California 91 octane, 1 year, 24k miles.

Do whatever people who haven't done it tell you and makes you feel good. Most the Eknowledge you come up with is going to be people who never have, yet somehow have something to say.

As for a GOOD tune... Do you guy's normally get away with shitty tunes? But you'll break out the three digit tune for this occasion? Come on, everyone needs a good tune, I don't even understand what kind of thing that is to say.
 
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x182dan

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the bottom line is I don't want this $1,000 supercharger kit to cost me over $3,000. Will that happen and what will need to be bought other than the kit? Example blower cam, injectors, etc..........
Dan
 

Jrgunn5150

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If you get every nut and bolt that would include injectors wouldn't it? And a fuel pump, and a maf, if not, you need them, and a tune.

If you have a complete kit, you don't "need" to buy anything, like a blower cam. Put it on the car, get it tuned.
 

BigTang

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good tunes are hard to come by in certain areas. even in houston people have issues finding a knowledgeable shop. We use PSI and they turn out some good stuff but if they aren't familiar w/ all the aspects of the build they will turn out a sub par tune that works great on the dyno but sucks on the street.
as for daily driving a high compression non-intercooled setup making decent numbers, you can't get by w/ that here due to the obnoxious weather changes we have. 100+ in the summer and below freezing in the winter. sure you can cruise to work but if you get on it in the heat things can get out of hand fast. thats when we started having issues w/ some of our turbo trucks and the last blower car i built, i ran out funds and tried to 1/2 ass it w/ a huge blower and too much boost w/ a sub par fuel system. i burned out 3 pistons on what i was told was a good tune. live and learn...
 

Jrgunn5150

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I ran from California, lived in Orange county, worked in Corona, or Riverside county, the "High desert". My car saw tempature changes of 30-40 degrees daily. Altitude changes of thousands of feet. I ran from Ohio, to California, to Michigan, back to California, to Texas, California....

It's not where you're at, it's who is working on your car apparently. Houston isn't special, a/f ratio is still a/f ratio, timing is still timing. When you tune a car, and actually tune it (by tune, I don't mean use one of SCT's cookie cutter overlays for a combo "like" yours that they give every shop who buy's Pro Racer), it should run like stock. That means elevation, temp, shouldn't affect it. If they do, it wasn't right to begin with.

Think of it like a seesaw... And your engine is a ball... As you drive through changes, the tune rocks back and forth, and the engine rolls around. The tune always tries to rock it to the middle... Now make a seesaw by some asshole who doesn't care, it's offcenter.. The further offcenter it is, the more likely you are to roll the ball off the end.

At any rate, from your post, there's more reasons than a tune your car blew up. And high compression and boost weren't one of them.
 

BigTang

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...and you're right. The point of my post was to make sure that what ever set up he goes w/ to make sure that its a complete package(not 1/2 way completed) and to let the tuner know what he's working with.
 

Jrgunn5150

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I agree, I may be wrong, but it seems the OP is going at it with budget taking precedence over quality.

Don't get caught up in getting it on right now, get caught up on getting it on right.
 

BigTang

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even if thats the case i'd snag that blower up for a grand and let it sit on the shelf for a year until everything was in order just because its that cheap.
 
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x182dan

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J.R. said:
If you get every nut and bolt that would include injectors wouldn't it? And a fuel pump, and a maf, if not, you need them, and a tune.

If you have a complete kit, you don't "need" to buy anything, like a blower cam. Put it on the car, get it tuned.

The reason I say that is because my car is already a 331 stroker so I would need way bigger injectors than a stock 302 and stuff like that.
 

Jrgunn5150

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x182dan said:
J.R. said:
If you get every nut and bolt that would include injectors wouldn't it? And a fuel pump, and a maf, if not, you need them, and a tune.

If you have a complete kit, you don't "need" to buy anything, like a blower cam. Put it on the car, get it tuned.

The reason I say that is because my car is already a 331 stroker so I would need way bigger injectors than a stock 302 and stuff like that.

You should already have bigger injectors, and the "kit" should also come with bigger injectors. Off the top of my head, 42's would be a minimum, 60's would be preferred.
 
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x182dan

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I am expecting my output right now to be around 325-350rwhp and I have 36lb injectors now
 

BlkoutGT

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J.R. said:
Don't get caught up in getting it on right now, get caught up on getting it on right.

That sentence is pricless! and if you follow it, you will end up with less headachs
 

Michael Plummer

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x182dan said:
the bottom line is I don't want this $1,000 supercharger kit to cost me over $3,000. Will that happen and what will need to be bought other than the kit? Example blower cam, injectors, etc..........
Dan

Hi Dan,
HP cost money. Now that we got that out of the way, you mentioned that your setup makes 350rwhp now. Depending on your boost level you could be making close to 500rwhp or more depending on boost levels. With this in mind, here are some things to think about in no particular order.

1) You will need bigger injectors (60lbs)
2) Recalibrated MAF
3) Fuel pumps (255lph internal and external)
4) Tune (Chip burnt)
5) My personal favorite: Snow Performance Water/methanol kit (stage 2)
6) Aftermarket ignition system
7) etc.

Good luck with your decision
Michael Plummer
 

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