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and another what/will it run

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Old Jul 22, 2010 | 02:28 AM
  #1  
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From: medina oh
Car: 1982 z28
Engine: 400
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Axle/Gears: 3:23
and another what/will it run

ok guys alot has changed since last post of my 350 build i bought some heads and have my intake here gos

95 2bolt 350

bored .30 over

block decked

flat top pistons (with four valve reliefs)

the cam is an erson the specs are
grind hi flow ah
108 lobe separation angle
overlap 68.00
intake opens 34.00 exhaust closes 34.00
intake closes 70.00 exhaust opens 70.00
running clearance 0.000 0.000 [hot]
valve lift (int/exh) 0.472 0.472
duration (int/exh) 284 284
@.050 tappet rise

overlap 4.00
intake opens 2.00 exhaust closes 2.00
intake closes 38.00 exhaust opens 38.00
duration intake 220.0 duration exhaust 220.0
lobe lift intake 0.315 lobe lift exhaust 0.315
intake center line 108
rocker arm ratio 1.50

double roller timing set

melling oil pump

and yes i know i know 193 heads

intake is a high rise i havent checked dual plane or single

carb ..i will most likely rebuild a q-jet 700maybe 650 what you think??

no emissions or a/c junk

stock hei dizzy

4 " cowl hood

shorty headers ...most likely just to glass packs

only thing to reduce weight is rear seat is taken out and no spare tire junk

700r4 shift kit
3:42 limited slip

tires
im not sure what size in front but there skinny lol
rear i think 245/50 maybe 235/50

what do you guys think of the setup...its alot differant than what was planned but 1 thing lead to another and now i have the parts and no girlfriend so the time is there also ....i want to drive it lol

ANY thoughts are always apreciated !~!
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Old Jul 22, 2010 | 08:13 AM
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From: Harford County, MD
Car: camaro sportcoupe
Engine: 7.0L
Transmission: G-Force GF5R
Axle/Gears: Moser 9"
Re: and another what/will it run

14.5x's
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Old Jul 22, 2010 | 09:25 AM
  #3  
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From: medina oh
Car: 1982 z28
Engine: 400
Transmission: 700r4
Axle/Gears: 3:23
Re: and another what/will it run

wow really ...i wanted to be like in the 13 even if high 13 ..but to be honest i kinda thought that would be the general consesis :/
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Old Jul 22, 2010 | 09:33 AM
  #4  
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Originally Posted by slowmaro87
bored .30 over
Whoa, how did you avoid hitting water? Most only go .030" over.

193 heads, unknown intake, unknown shorty headers, rest of the exhaust not stated, assume stock stall converter, relatively high duration cam...

Hmmm, got to agree with Matt.
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Old Jul 22, 2010 | 09:46 AM
  #5  
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From: medina oh
Car: 1982 z28
Engine: 400
Transmission: 700r4
Axle/Gears: 3:23
Re: and another what/will it run

lol ya hey every little bit helps rite

but the headers i would assume to be like flotech something cheap they are off of a parts car along with the intake ill have more info on it tomorrow i gotta pull the carb off and check but its some off brand (doesnt have a lable) ya ill be runnning a stock converter this time around and for exhaust i havent decided yet if i run it into the stockiroc y-pipe to 3 " stock like routing to the back than a decent muffler to duals or if i want to just kill my ground clearance and eardrums lol and just do headers to glasspacks ....with nothing else...open for suggestions tho
or maybe even some little things here and there to help it run
this isnt the route i wanted to take this time round but its what money is allowing
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Old Jul 22, 2010 | 02:47 PM
  #6  
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From: medina oh
Car: 1982 z28
Engine: 400
Transmission: 700r4
Axle/Gears: 3:23
Re: and another what/will it run

how much of a difference would a set of vortecs and a rpm intake make in my 1/4 times do you guys think
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Old Jul 22, 2010 | 03:48 PM
  #7  
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From: Harford County, MD
Car: camaro sportcoupe
Engine: 7.0L
Transmission: G-Force GF5R
Axle/Gears: Moser 9"
Re: and another what/will it run

it'd be night and day. mid/low 13's with a decently thought out exhaust system.

please understand something. exhaust can be very cheap if you take the time to do a little research. read as much through the exhaust boards as possible. there is so much info to be had there.

even a mild converter, like a corvette "b-stall", which is ~1800-2000 will yield better results than your stock converter. they can be had for like $100 through a decent parts supplier. it's a good cheap mod to get the car out of the hole quicker.
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Old Jul 22, 2010 | 04:17 PM
  #8  
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From: medina oh
Car: 1982 z28
Engine: 400
Transmission: 700r4
Axle/Gears: 3:23
Re: and another what/will it run

what do you guys think about a s-10 converter from a 4.3 i heard they stall at like 2300 2400 something like that or would that be too much for this setup
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Old Jul 22, 2010 | 04:20 PM
  #9  
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From: Harford County, MD
Car: camaro sportcoupe
Engine: 7.0L
Transmission: G-Force GF5R
Axle/Gears: Moser 9"
Re: and another what/will it run

no, it'd be perfect. the only thing about those converters (the s10 and the 'vette) is that they will only take a beating for so long before they start to come apart. with your power level you'd probably be fine for a long time.

think about tires too...
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Old Jul 22, 2010 | 04:25 PM
  #10  
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From: medina oh
Car: 1982 z28
Engine: 400
Transmission: 700r4
Axle/Gears: 3:23
Re: and another what/will it run

what do u think for the carb i have a 650 and 700 q-jet ...and my father is one of those older guys that can make a q-jet run lol..but im always open to suggestion...thank you very much for input btw
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Old Jul 22, 2010 | 05:25 PM
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From: Harford County, MD
Car: camaro sportcoupe
Engine: 7.0L
Transmission: G-Force GF5R
Axle/Gears: Moser 9"
Re: and another what/will it run

if your dad can make a q-jet run, then go with it. they can be made to go very fast. i'm a holley guy myself. holley's are proven designs and work everytime, and they're easy.

you find a good deal on a vortec head or something? i want to say Scoggin Dickey has a killer deal on some worked ones.
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Old Jul 22, 2010 | 06:31 PM
  #12  
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From: medina oh
Car: 1982 z28
Engine: 400
Transmission: 700r4
Axle/Gears: 3:23
Re: and another what/will it run

well the story goes ...i trusted my machinist when he told me to go with these 64cc heads he had just finished cleaning up real nice he said in the work alone he had 388 in them and would sell them to me for 300 ...stupid me didnt run the numbers on the heads and trusted him ...ya they are swirl port 193s wich is what i took off my engine ...i called him the next day and we talked about it ...he stated hell find some vortecs and we will trade he didnt want me to be unhappy ...that was a week or two ago i was thinking of saying screw it these (193s) are already lookin brand new and i have a gen 2 intake so why not ...but if im not goin to be close to my 13 second goal i want my vortecs lol
ya it was my fault i didnt run the numbers it was my lack of knowledge and trusting him .not that he was trying to stiff me or something just who the hell else would by those heads for 300
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Old Jul 22, 2010 | 07:33 PM
  #13  
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From: Harford County, MD
Car: camaro sportcoupe
Engine: 7.0L
Transmission: G-Force GF5R
Axle/Gears: Moser 9"
Re: and another what/will it run

well, if you have a 1988-1995 chevy 1500 with a cracked cylinder head, that's a KILLER deal, lol. however, if you have a goal of a 13 second runner, you've waisted money...but you know that already.

you live and learn man, not everyone knows everything. i certainly don't. i've poured countless late nights over this board and others for the last 8 years and i still find new info every day.
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Old Jul 22, 2010 | 07:36 PM
  #14  
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From: Baton Rouge, LA
Car: 89 RS
Engine: 305
Transmission: th350
Re: and another what/will it run

I might be wrong but i think the smallest q-jet is 750.
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Old Jul 22, 2010 | 07:40 PM
  #15  
slowmaro87's Avatar
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From: medina oh
Car: 1982 z28
Engine: 400
Transmission: 700r4
Axle/Gears: 3:23
Re: and another what/will it run

very true....you wouldn't happen to know someone with a tbi truck needen some heads lmao..jp
thank you very much for your help i think i am going to track down some vortecs and sell off these swirlys if he doesnt come through
ne ways ill post what she does when running thanks again
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Old Jul 22, 2010 | 07:42 PM
  #16  
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From: medina oh
Car: 1982 z28
Engine: 400
Transmission: 700r4
Axle/Gears: 3:23
Re: and another what/will it run

Originally Posted by 1320_Guy
I might be wrong but i think the smallest q-jet is 750.
nah they come all the way down to a 550cfm in the 80's
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Old Jul 22, 2010 | 08:00 PM
  #17  
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From: Baton Rouge, LA
Car: 89 RS
Engine: 305
Transmission: th350
Re: and another what/will it run

Looked it up there is only a 750 and 800 cfm q-jets.

http://www.carburetor.ca/carbs/tech/...jet-index.html


edit... btw does the posi still work?

Last edited by 1320_Guy; Jul 22, 2010 at 08:09 PM.
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Old Jul 22, 2010 | 08:10 PM
  #18  
slowmaro87's Avatar
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From: medina oh
Car: 1982 z28
Engine: 400
Transmission: 700r4
Axle/Gears: 3:23
Re: and another what/will it run

l69's came with 650cfm Rochester quadra-jets if im not mistaken and pretty much any late model 305 car from the 80's some into the 90s had 550's
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Old Jul 22, 2010 | 08:21 PM
  #19  
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From: Baton Rouge, LA
Car: 89 RS
Engine: 305
Transmission: th350
Re: and another what/will it run

http://home.earthlink.net/~quadrajet...ow_ratings.htm

It apears that the smallest is a 750. For smaller engines there was secondary throttle and air meeter restricters. With any one a few tweaks and it will flow 750 cfm.

The good thing about a q-jet carb is its an air on demand type carb. Say you have a stock 350 that will only flow 600 cfm the air valve will only let the carb flow 600.
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Old Jul 22, 2010 | 08:52 PM
  #20  
slowmaro87's Avatar
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From: medina oh
Car: 1982 z28
Engine: 400
Transmission: 700r4
Axle/Gears: 3:23
Re: and another what/will it run

what about doing some porting on my 416's and selling off my 193's for some valves would that put me in around 13's ....or would the fact that the 416 heads are like 58cc not be too much for my flat tops ?
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Old Jul 22, 2010 | 09:22 PM
  #21  
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From: Harford County, MD
Car: camaro sportcoupe
Engine: 7.0L
Transmission: G-Force GF5R
Axle/Gears: Moser 9"
Re: and another what/will it run

run 92 octane and a conservative timing curve and you'll be fine. if they are truly 58cc's, and a .041" gasket, you'll be close to a 10.5:1 compression. what's the piston to deck height and the volume in the top of the pistons (reliefs)?
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Old Jul 22, 2010 | 11:37 PM
  #22  
slowmaro87's Avatar
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From: medina oh
Car: 1982 z28
Engine: 400
Transmission: 700r4
Axle/Gears: 3:23
Re: and another what/will it run

thats probly crucial information ...but i couldnt tell ya to be honest lol



ya better off goin with the vortecs just seems ...safer lol
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Old Jul 23, 2010 | 07:56 AM
  #23  
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From: Harford County, MD
Car: camaro sportcoupe
Engine: 7.0L
Transmission: G-Force GF5R
Axle/Gears: Moser 9"
Re: and another what/will it run

yes
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Old Jul 23, 2010 | 11:21 AM
  #24  
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From: Philly, PA
Car: 1986 Camaro SC
Engine: None
Transmission: None
Axle/Gears: Moser 9" W/ spool 3.50 gears
Re: and another what/will it run

Originally Posted by mw66nova

please understand something. exhaust can be very cheap if you take the time to do a little research. read as much through the exhaust boards as possible. there is so much info to be had there.

.

Shameless plug, lol


https://www.thirdgen.org/forums/engi...ust-third.html

Last edited by Fast 383; Jul 23, 2010 at 11:26 AM.
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