i think i want a mid ninetees corvette as my next project, because they can be found relatively cheap and still be in good condition. i would probably try to find a high(er) mileage one, maybe 70K miles or so. i want to have a mid 11 second streetable car, and i figured i could go about it one of two ways, forced induction or naturally aspirated.

F/I

long tube headers
larger throttle body
full exhaust (probably flomasters, i love the sound)
3.55 gears (or a ratio close to this....id still like some top end)
procharger p600b kit with a 2 core intercooler @ 8psi (might run more boost).
18 x 10" wheels in the back with nitto 555r's
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procharger says it will add between 60-65% horsepower, so i think it would be safe to say with those mods i should be hitting close, if not more than 500 fwhp.

N/A'ed

i would pull the engine and do the following
383 stroker kit
forged pistons...maybe 11:1 or so
ported and polished aftermarket aluminum heads (undecided on brand)
aftermarket intake manifold ported to match the heads (undecided on brand)
a fairly extreme cam
3.55's
long tubes
bigger throttle body, etc
18x10's in the back with nitto 555r's
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i think each will probably put out about the same amount of power depending on configuration. i guess it comes down to how much each will cost, but once again i think they will be close to the same when all is said and done. im leaning more towards procharger, because i can have quite a bit of power and still have a basically stock engine internally. this will also leave me alot of room for upgrades in the future to add even more power, like heads/cam/intake, etc...

what do you think? :confused:

 

Welcome :seeya You should be in the 11's either way :cheers:

 

Actually, if you get like a 92-96 LT1, you could get it INTO the 11's pretty easily... (11.99)
1.) GMPP LT4 Hotcam
2.) Ported stock heads/intake
3.) Long Tube Headers/Dual 2.5" Exhaust/No cats/straight-through mufflers
4.) 3000rpm Stall Converter(if auto)
5.) 3.73 gears(auto)/4.10 gears(stick)
With sticky tires, you could wing it into the 11's, and it would also be VERY streetable.

 

Tim,

What kind of HP would the setup you described pull? Flywheel or rear wheel.

Thanks,

Mark

 

hmm...well it sounds like it will be easier than i had thought :cheers: so you say 4.10 gears huh? my friend had them in his 5 speed mustang, and it seemed to me like he was too busy shifting all the time during a wot run. alot of the ls1 fbody guys swear by them mated to a 6 speed, supposedly it puts you in 4th before you hit the 1/4? i would still like to be able to hit 170+ mph on a road course or something though, but ideally it wouldnt happen that much so it may be better to gear my acceleration in the 0-125mph range. im pretty set on the blower, s/c'ed cars are just awesome (owned em... so i know first hand). working on cars is my #1 hobby, so im definately looking for something to toy around with. i was doing the math in my head roughly, and if i could get 350+ hp out of the engine n/a'd (tb, long tubes, exhaust, etc) and get a 60-65% boost in hp then that would equal about 560-577 hp at the flywheel. let alone if i decided to go aftermarket on the heads/cam/intake... :D i figure between the blower and bolt ons i mentioned above, im looking at 5-6 in the engine, 2g or less on wheels/tires, and probably another grand in nick nacks. thats doable!

btw...how much does a stock 92-96 weigh? about 3100lbs?

 

A fellow board member, Nathan Pleamons, pulled 370rwhp, with his 92 LT1 6 speed with the HotCam/Ported Stock Heads-Intake/Long Tube's. Another fellow forum member, John Mackey, had a similar setup, and ran an 11.55. :yesnod:
Personally, we used to have an 92 LT1 Automatic, with a 3000 stall converter, 3.73 gears, and just removed the cats/resonator/mufflers, and we ran 12.50's all day on sticky tires.

 

MY 96 Vette weiged in at 3220...... (With everything in it still, Spare and such)

They are all around that area given options and all that....

 

Don't quote me, but I think the second set-up would be faster than the "F/I" option. You didn't list any internal engine mods with the forced air, besides the fact that I don't think you'd hold up too long engine wise if you could even keep the 8 psi constant, you probably wouldn't hit 11s.

 

well...i didnt list any internal engine mods with the blower because it was my opinion that it wouldnt be needed immediately. if i could get 10-20k on the engine blown before i pull it for a rebuild, thats fine with me. i dont really think 8 psi is really even that much boost considering what ive run in previous cars with stock bottom ends. i just think it would be hard to get 500+ crank horsepower out of the engine n/a'd. a 383 stroker kit, p&p'd aluminum heads with a matched ported intake and a custom grind cam would probably be the way i would go if i did go n/a, but i think it might cost more in the long run than the blower to get equal #'s.

 

383/SR/219 cam/exhaust/afr195's - roughly about 500hp 500ft-lbs the torque curve would scare off anything on the surface of the earth.

 

383/SR/219 cam/exhaust/afr195's

maybe im missing the obvious, but whats SR? recommend a cam? is there any certain intake manifold that would match the 195's nicely?

 

Corvettes are rear wheel drive. :jester :jester

Just bustin' your chops, man. :D

 

they also have flywheels
(fly wheel horse power) aka at the crank

 

My head and cam car with 97,000 miles on it runs mid 11's with 360 rwhp.

 

that sounds very inticing! maybe ill just go with the H/C/I and add the blower later, when i have a drivetrain that can support a blown H/C/I'd motor :crazy:

 

sorry, my bad. look at my sig, too.

383 ci, a SuperRam intake manifold, the LPE 74219 cam (219/219 and a good helpin'-a-lift), and probably a 2800rpm vigilante torque converter and 3.07s or 3.23s.

but ask someone more knowledgeable then me for exact parts, try ski_dwn_it, corkvette, or jeb. they know exactly what is going on with cubes/manifolds/cams/torqueconverter & gear combos. they know exactly what they are doing...

 

i wouldn't pick an LT1 for a forced induction motor, not stock bottom end anyway :reddevil

if you are going rebuild/NA route- do a 396 :yesnod: also, get some good AFR's ported by someone good, not just any joe schmoe. I suggest http://www.cmotorsports.com; if not advanced induction. Id also go with lots more compression; 12.5 ish depending on cam choice. This aint your grandpas SBC :thumbs:

 

I have a stock 93, what would a setup like that roughly run me?

 

be wanted-
an NA H/C setup is NOT well suited for a S/C. One or the other :cheers:

 

if you have a stock 93, you have a lt1. and a decent a year from what i hear from the ltX series guys. SR aint going to go on that thing, L98 are a TPI setup LT1/4s are not. *warning, i dont have an lt engine hence no clue about ltX's* but, from what i hear they need a good port and polish job on heads (or a new good set), a port and match job on intake (if that), a hot cam, and 4.10s/3.73s, and then they seem to really come alive without being unacceptably uncivilized. oh yeah and some extra cubes, either a 396ci or 383.

for what its worth afr190cc/SR/74219cam/1.6rrcompcam promags/58mm TB/some engine work and a few other little things and tools here and there is at about 5k now? I am doing (still doing) most of the work myself, but I got heads intake from ski_dwn_it at a very fair price. I suggest going into the search archives a couple of times and digging around to see what the lt guys make out of it. then go ask someone, then decide, then buy here on line. everything, AND everything (so far) has come in better then expected condition.

GL. :cheers: