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Old Dec 4, 2006 | 08:41 PM
  #1  
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From: kissimmee fl
Car: 88 iroc-z z-28
Engine: 383
Transmission: th400
Axle/Gears: 3.42
is there such a thing

as a fast 305. or sumtin that makes it at least fun that i could be able to swap to a 350. ima student with little time to do sometin like build me a engine. the 305 here for now. so im wondering wat stuff i could do such as new intake or sumtin that swappable to a 350. wats all the stuff i could do.
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Old Dec 4, 2006 | 09:09 PM
  #2  
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From: Arab, Alabama
Car: 1988 Trans Am GTA
Engine: 350 4BBL
Transmission: 700R4
Axle/Gears: 3.27
No, there is no such thing as a fast 305. Your profile and tagline shows your car with a L98 350 TPI. Also: "the 305 here for now" is not a sentence. Please think about wording your sentences to convey thought and information instead of sounding cool. We can't make any sense out of that crap you typed to know what you are asking so we can help you with what you want to do.
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Old Dec 4, 2006 | 09:58 PM
  #3  
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From: Saskatoon, SK, Canada
Car: '83 Z28, '07 Charger SRT8
Engine: 454ci, 6.1 Hemi
Transmission: TH350, A5
Axle/Gears: 2.73 posi, 3.06 posi
There are fast 305s out there. Theres a bunch on here, and it can be done. Friend of mine has a ProCharged TPI 305 in the mid 13s. MW66Nova did it. He has a N/A 305 thats well into the 12s and still fairly streetable. Its not difficult to build a fast 305, its just easier and cheaper to build a faster engine from a bigger 350 or 400.
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Old Dec 5, 2006 | 08:07 PM
  #4  
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From: kissimmee fl
Car: 88 iroc-z z-28
Engine: 383
Transmission: th400
Axle/Gears: 3.42
ok supervisor i have 2 cars. therefore two engines. secondly the sentence should have been the 305 is in here for now. i forgot 2 letters omfg. anyways ok back to my question. ok so how much should i do to the 305 that would give me some extra ponies but yet i would still be able to use those parts on a 350 down the road?
----------
oh and supervisor read my signature.

Last edited by kowboy59; Dec 5, 2006 at 08:08 PM. Reason: Automerged Doublepost
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Old Dec 5, 2006 | 11:10 PM
  #5  
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From: maine
Car: 1986 iroc z
Engine: vortec 383
Transmission: th350
Axle/Gears: 3.73 moser 12 bolt true trac
do a search! This board is probably one of the best on the internet for questions like these.
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Old Dec 6, 2006 | 04:11 PM
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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
You could start on the FAQ forum. There's a thread about the differences between 305's, and also includes what to do to make them run better.

Exhaust is usually a $400-$800 dollar chunk. You can do other things, but almost anything you do will be hindered by stock exhaust.
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Old Dec 6, 2006 | 04:31 PM
  #7  
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From: kissimmee fl
Car: 88 iroc-z z-28
Engine: 383
Transmission: th400
Axle/Gears: 3.42
i dont have stock exhaust. i should have mentioned that. so now wat wshould i do? ill search some too.
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Old Dec 6, 2006 | 04:46 PM
  #8  
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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
Headers?
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Old Dec 6, 2006 | 05:14 PM
  #9  
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From: Miami
Car: 1992 Camaro RS
Engine: L03
Transmission: 700R4
Axle/Gears: Stock
Look up MW66Nova on these boards. He's got a 305 running 12.3s in the quarter mile. There's nothing wrong with building a 305, and they can be pretty quick.
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Old Dec 7, 2006 | 10:21 AM
  #10  
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From: kissimmee fl
Car: 88 iroc-z z-28
Engine: 383
Transmission: th400
Axle/Gears: 3.42
ok no i havent done the headers yet. somtin on my to do list. ya i was wondering becuz i was thynkin how can a v-6 or sumtin like that become fast but a 305 cant? i guess that'll solve my problem. besides headers how bout intake and wat not. my first step is gettin a 4 barrel. llol
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Old Dec 7, 2006 | 11:52 AM
  #11  
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From: Findlay, OH USA
Car: 1987 Monte Carlo SS
Engine: 400 SBC
Transmission: 200-4R
Axle/Gears: 4.10
Keep reading man, you may easily find the answers to all your questions by looking around. First thing on any of these motors needs to be exhaust. Is the motor already carbureted? An air gap intake is a great move for a carb, heck I'd even like to see one on my TBI in the future. There's also different air cleaner options. Keep in mind hood clearence too. But you have to make sure the motor can exhale first.
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Old Dec 7, 2006 | 01:57 PM
  #12  
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From: Harford County, MD
Car: camaro sportcoupe
Engine: 7.0L
Transmission: G-Force GF5R
Axle/Gears: Moser 9"
i'm assuming this is for your 74' nova correct?

do yourself a favor and grab the casting numbers off the cylinder heads.

full exhaust with true duals under the car is the first thing to do. the headers and exhaust can be swapped over to the larger cubic inch small block later.

holley p/n 300-36 "street dominator" intake manifold
holley p/n 4777 650 double pumper
comp 280H cam
comp pro-magnum roller rockers
new double roller timing chain.
get either a set of 416 or 601 heads together for it, and build it for 9.5:1 c/r.

do those things right there and that will get you started in the right direction.
----------
Originally Posted by Supervisor42
No, there is no such thing as a fast 305...
and why not? Rich Aman has the H/S record at 10.98@121mph with an n/a 305...Preston Smith went low 10's with boost on a small bore 305 tpi...SEVERAL people on this board have been deep into the 11's with spray...i've been 12.31 @ 108mph with no power adders and still more to tap into! and i still drive mine EVERY DAY!

Last edited by mw66nova; Dec 7, 2006 at 02:02 PM. Reason: Automerged Doublepost
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Old Dec 7, 2006 | 09:19 PM
  #13  
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From: kissimmee fl
Car: 88 iroc-z z-28
Engine: 383
Transmission: th400
Axle/Gears: 3.42
hahah i sent u an email askin if you needed the numbers. ok ill email you them oor on here. ummm ok well then i need headers and i need a new carb and stuff. ya i mostly need help on heads and cam. should i just get a head job and wat not? hahahha i found the numbers. 14014416
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Old Dec 7, 2006 | 09:40 PM
  #14  
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From: Harford County, MD
Car: camaro sportcoupe
Engine: 7.0L
Transmission: G-Force GF5R
Axle/Gears: Moser 9"
if you take the heads off the engine, i'd go ahead and have the valve guides cut down to accept up to .525" of lift and get a fresh valve job on them. if you can afford it, have the stock valves backcut (you don't need to go up in size with the valves on this little motor) and a bowl blend done.

again, a holley p/n 300-36 street dominator intake and a holley 600 double pumper will work GREAT for making solid power out of the 305 without over carbing the motor. the camshaft that i used to have in the 305 was a crane blue racer 214*/224* @.050 .442"/.465" lift 112 lsa camshaft. summit has this same grind under their brand name for $70 for camshaft and lifters:
http://store.summitracing.com/partde...5&autoview=sku

with that same head work i described and that camshaft above, and intake manifold my 3200lbs camaro with a 4000stall converter, 4.10's and a 700r4 went 13.03 @ 103mph.
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Old Dec 7, 2006 | 10:10 PM
  #15  
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From: Orland Park, IL
Car: 1984 Z28
Engine: SLOW carbed ls
Transmission: TH400 with brake, 8" PTC converter
Axle/Gears: moser 9" 4.11
11.60s in my old 305 on spray
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Old Dec 8, 2006 | 10:22 AM
  #16  
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From: kissimmee fl
Car: 88 iroc-z z-28
Engine: 383
Transmission: th400
Axle/Gears: 3.42
alrite sounds great. i really appreciate ur help and all. the 305 is gonna be in a car about 3000 lbs with me in it. so thats great then. thanx for ur help and ill post up when its all done.
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Old Dec 8, 2006 | 10:29 AM
  #17  
kowboy59's Avatar
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From: kissimmee fl
Car: 88 iroc-z z-28
Engine: 383
Transmission: th400
Axle/Gears: 3.42
oh and also i do not have a return line on the mechanical fuel pump. thats not a problem right?
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Old Dec 8, 2006 | 12:44 PM
  #18  
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Car: 1987 IROC 1991 RS
Engine: 5.7 TPI 5.0 TBI
Transmission: T-5 , 700R4
Axle/Gears: 2.73 twice
Not if its carbed, only fuel injection (that I know of) needs a return line. Fuel injected motors need to operate at a certain pressure for the injectors, not too much or too little. Think economy on that. (Not knocking on FI either, running it myself happily.)
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Old Dec 8, 2006 | 03:05 PM
  #19  
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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
All carb'd 3rd gens had a stock return line. It's primarily for reducing the tendancy for vapor lock with the tight engine compartment and reduced cooling air flow around the fuel supply line. You don't really need it for a drag car, but if you start going rounds with reduced time for cool-down between runs, it sure won't hurt to have it.
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Old Dec 8, 2006 | 03:36 PM
  #20  
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From: Harford County, MD
Car: camaro sportcoupe
Engine: 7.0L
Transmission: G-Force GF5R
Axle/Gears: Moser 9"
but in a 74 nova, it didn't come with it and i wouldn't worry about it.
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