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400hp 4.3l is it possible how?

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  #41  
Old 03-09-2011, 09:00 AM
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Just did some math and gear combos. now this is based on the weight of my gen1 4x4 which is 3077 pounds. At 300hp and a 418 gear it should trip the lights at 13.329. I dont intend to race this but you get an idea of what 300hp can do. Low 13s on the street is pretty darned quick.

OK OK. so 400hp gets you a 12.11 truck. Now, how much of a price tag do you put on 1.2 seconds?
 

Last edited by Jmooney152; 03-09-2011 at 09:02 AM.
  #42  
Old 03-09-2011, 02:11 PM
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300hp is attainable for well under that kind of money..

for anyone doubting. heres a 98 jimmy, look at the mileage, 165k on a STOCK motor. typhoon turbo setup on 10-12 psi WELL OVER DOUBLE THE STOCK BOOST. he has the proper fuel system and a PROPER tune. the jimmy no doubt make more hp than a stock syclone as it has a higher compression motor. the guy has never dyno'd it, though. it takes a 4300lbs jimmy down the 1/4 in low 14 second.. it's making some power.

http://www.fullthrottlev6.com/forums...Helpfull-Hints

the truck is reliable.
 
  #43  
Old 03-09-2011, 04:02 PM
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Im in total agreement with you on the 300hp. 300 is reasonably obtainable with these motors. Its going beyond that threshold where it starts to get out of bounds a bit. The original poster was talking about 400. BTW is that a full sized Jimmy? Why is it so heavy?

I guess it isnt full sized. I just checked that link. 4400lbs seems really heavy to me.
 

Last edited by Jmooney152; 03-09-2011 at 04:04 PM. Reason: answered my own question.
  #44  
Old 03-09-2011, 04:06 PM
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isn't the curb weight of the stock 4dr 4wd blazer/jimmys around 4100lbs? factor in the rest of the weight for the turbo and what not, and whatever else he has. 4300lbs was an estimate, a rough one.
 
  #45  
Old 03-09-2011, 04:08 PM
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Originally Posted by Jmooney152 View Post
But try an honest 300hp and get back to me with your thoughts, I think you will be plenty satisfied.
that's what i was shooting for when i did mine, for a couple of reasons.

1. the weakest link in my driveline was the 5 speed. (no more power shifting & 4HI lauches)

2. i needed something with a little more "oomph!" but still be a streetable year round dirver. no point in having anything more, if all you're gonna do is slip 'n slide during the snowy season.


Originally Posted by Debonair View Post
i dont know, i can see many better ways of spending 10 grand, even 6 grand. for that much you can swap in a decently built LS motor making much more power and torque
i spent around 4K on mine. was great 'til she went belly up internally.
 
  #46  
Old 03-09-2011, 04:26 PM
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you could be right. I just didnt realize the Gen2's were heavier. I was wrong about mine weighing 3077 though, its 3777lol. weird scratches on the tag from door sag issues (which I have the bushings for and Im doing this weekend). But I had to look it up, I just couldnt believe there was a 1,000 pound difference
 
  #47  
Old 03-09-2011, 04:44 PM
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300hp is pretty quick, my Camaro has 320hp at the rear wheels, weighs 3400lbs. it should do the quarter in low 13s. and the gears are 3.23s.

Jmooney basically said my thought, yes you can get that much power out of that engine, however if you want more (most people do) then either it wont be streetable, or it'll blow up.

i suggest any V8 be it a Gen I 350 at the smallest, an LT1 or and LS1 because
at the least you can have ~240 horsepower and have plenty of room to grow and mod.
 
  #48  
Old 03-09-2011, 08:29 PM
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yeah my old chevy silverado was 325 rwhp and she could hit 119mph in the quarter mile 12.8 sec i thought it was fast enough for a street ride

maybe if it was a stripped down RST
 

Last edited by TheBrettster; 03-25-2011 at 05:36 PM.
  #49  
Old 03-09-2011, 08:57 PM
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I really do not see 325rwhp getting a full size chevy getting down the 1/4 in 12.8 seconds.

fully stripped, and around 3400lbs, maybe. Stock weight, no chance in the world you're hitting 12s with that little of power.
 
  #50  
Old 03-10-2011, 12:59 AM
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Originally Posted by 01vortec View Post
I really do not see 325rwhp getting a full size chevy getting down the 1/4 in 12.8 seconds.

fully stripped, and around 3400lbs, maybe. Stock weight, no chance in the world you're hitting 12s with that little of power.

absolutely!

my Dart runs through the traps at......11.18 @ 121.8 mph (goes over the scales @ 3320lbs)
 


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