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Full race to street car

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Old Mar 17, 2016 | 11:22 AM
  #1  
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Default Full race to street car

I had a 91 mustang with a 370ci motor, 91.5mm turbo powerglide and 3.27 gear with 160# injectors stock computer with hp tuners on E85. Full Race car. Im done having a trailer car that is not street friendly.

I sold the mustang. Kept the engine and turbo system. I just brought a 2000 firebird and want to put the motor in that. This will be a full street car, so far I came up with this

-370ci engine
-4l80e trans
-stock computer w/ hp tuners
-wheels 20" rear, 19" front

My questions are the following. For the street:
1) Single or twin turbo
2) What turbo or turbos
3) is the 160# injectors still ok. I will be using pump gas not E85
4)What gear ratio. I will be on the highway with this car

It will be full interior and I will have a/c and cruise control as well.
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Old Mar 17, 2016 | 12:06 PM
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A correctly sized single would work good on the street.
BW's seem to work well. Give Jose at Forced Inductions a call (or LJMS).
160#'s on pump gas probably wouldn't be ideal.
I have a 4L80e w/ a 3.27 and 26" tall tires. 80 mph on the highway is about 2600 rpm.
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Old Mar 17, 2016 | 09:44 PM
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Twin 67's 3.23 or 3.50 gear
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Old Mar 18, 2016 | 01:54 AM
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I'd stick to 17s or 18s if you want "big" and functional.
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Old Mar 19, 2016 | 04:30 AM
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1. really no odds, whatever is easier to package.

2. you dont state power goals.

3. If the injectors are high impedance and of good quality, then the stock computer may handle them ok.

4. Somewhere in the low-mid 3.x range
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Old Mar 19, 2016 | 07:15 AM
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I may be switching to e85, maybe we can work out a deal/trade for my 80's and your 160's. PM me if interested. Other then that I'd go big single since their easier to package and a 3.25 gear. That gear with my th400 is a nice street gear and will still run bottom 9's.
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