quick 305?

[band77one]

Ok so i dont want to spend the money buying a 350 tpi and then having it rebuilt then buying the parts for it, so i was thinking maybe i can get my 305 rebuilt, then throw on runners,intake manifold, injectors, a computer chip, and eventually a stealth ram plenum

[V]

go for a 350 now, dont spend big money on a 305, its the same price basic price to rebuild as a 305. plus everything from your 305 will bolt on to it. Only changes youll need to make are the following: ESC module, knock sensor, chip, and injectors. Everything else is the same for a 305/350 tpi. You can even reuse you roller lifter setup(as long as you get a roller 350 block). I'm sure almost everyone else will agree with me, get the 350.

[Pampered-Z]

go for a 350 now, dont spend big money on a 305, its the same price basic price to rebuild as a 305. plus everything from your 305 will bolt on to it. Only changes youll need to make are the following: ESC module, knock sensor, chip, and injectors. Everything else is the same for a 305/350 tpi. You can even reuse you roller lifter setup(as long as you get a roller 350 block). I'm sure almost everyone else will agree with me, get the 350.

:werd:

[badzracing]

You'll never make the 305 as fast as you want it to be. Go with the 350 and save yourself the time and money.

[foff667]

waits for tims arrival in this thread lol

[badzracing]

waits for tims arrival in this thread lol
364 c.i. seems to work well also, may cost a hair more, though.

[The Fixer]

I've got a decently quick 305, but for the $$, I coulda had a much better 350. That's why I picked one up today. :D

FWIW, my TPI 305 dyno'd at 223 hp and 277 ft/lbs at the rear wheels on a lean factory tune. But, this is with World Products 58cc heads, a Crane roller cam, roller rockers, and SLP runners. Big money invested in a small motor. However, the heads and intake will get reused on my 350 to save some $$.

[98tadriver]

305 + 200 shot, lol

[badzracing]

305 + 200 shot, lol
It'll probably be the coolest underhood fireshow you'll ever see!

[78camaro]

i just happen to have a complete 350 for sale....CHEAP!! PM me if interested

[12secondv6]

MrJuice's 88 iroc w/ a 305 is a decent 11 second car..... is that fast enough?

Stock heads
Stock intake
Stock cam
Stock tuning
Stock aussie 9 bolt rear
Stock tranny

Did I mention the word stock yet?

Upgraded fuel system, intake, exhaust, ignition, clutch and blower

[band77one]

well 88 iroc tpi with 305 come stock wit 195hp, ive got ram air setup, shorty headers, throttle body airfoil, high flow cat, and flowmaster, im thinking of getting intake manifold + runner setup from edelbrock, 52mm throttlebody, and then a plenum from holley. think that will get me at least mid 13's ? thats all i want for the everyday driving honda killer.

[The Fixer]

The Edelbrock runners and base might be a good investment, but don't spend the coin on a 52mm TB. If your car is an auto, even with those mods you might see mid-14s. Powershifting a stick 305 TPI car might get you low 14s-high 13s with the mods you mentioned. A friend of mine has a basically stock '92 Z and has gone 14.6's, but he's got a stick and he's a gooooooood driver.

[Tru2Chevy]

Get some gear and a tune and then we can talk 13s :)

- Justin

[band77one]

im also going to get 373 gears, up from my 308 gears, and a shift kit as well

[radialtireking]

A friend of mines 85 went 13.80's with a TPI 305 on street tires with a 700 trans. His car had world products heads, a cam ,headers,cat back and 4.10s. It had a stock TB,plenum,runners and the stock chip in the computer. It ran good for what it was but for the money he spent it could have been alot quicker.

[badzracing]

MrJuice's 88 iroc w/ a 305 is a decent 11 second car..... is that fast enough?

Stock heads
Stock intake
Stock cam
Stock tuning
Stock aussie 9 bolt rear
Stock tranny

Did I mention the word stock yet?

Upgraded fuel system, intake, exhaust, ignition, clutch and blower
Is that the stock blower? Anyhow, the only way a 305 can be made remotely fast is to dump a ton of money into it. If the same amount is put into a 350/377/383/400 etc it will produce twice the HP as the 305.

[12secondv6]

Ati 12 psi I think?

He has $6000 into it.... including buying the car :)

[NJSPEEDER]

waits for tims arrival in this thread lol

i'm here.............

a 305 responds just as well, if not better to many common mods for 350's(some 305's came with much weaker cams and the SLP TPI runners were actually deveoped on a 305). it is no difficult task to make a 305 extremely competitive with a similarly modded 350, they are both small blocks and 45cubes doesn't mean an automatic billion hp upgrade. so if you have a solid 305 roller motor in the car, work with it and worry about rebuilding **** for huge power numbers later.

secondly, and prolly the most important thing for this thread, it costs the same to rebuild a 350 as it does to rebuild a 305. so any machine work or anything you woudl worry about spending money on, it is the same thing or at least with in a few bucks.

if the 305 is still running strong and you want to "build" a motor i woudl suggest you start collecting parts now. anything that is a simple bolt on liek runners or air intakes and stuff, throw on the 305. find yourself a good 350 roller block and have it machined/bottom end together the way you want it. then you jsut swap the stuff off of the 305 and onto the 350.
that will leave you with less down time for the car and a better piece since you won't have to rush to get it done.

[camaroracer1992]

305's are decent motors, look at me i had a 305 tbi (i know yours is tpi) running a 13.18@104 on a stock cam, stock heads. :)

[band77one]

is there anyone on here that can port ? when i get the throttle body, runners,intake manifold , i want to get them and the plenum ported to match so everything works together right. it'll definately be a while but, i want to know before hand haha

[NJSPEEDER]

"porting" the stock upper box to match SLP runners is easy.
lay the gasket on the plenum, run the bolts part way in to hold it the way it will be lined up when installed, hold the gaskets flat against the plenum and trace the openings with a marker. then jsut go back with a dremel tool/die grinder and make the openings in the plenum the same size as the ones in teh gaskets.
you can also do the same to the runners to makesure there are no casting flaws obstructing air flow.
right behind the throttle body, inside the plenum, you will find a casting ridge that also shoudl be ground down.

it only takes a few hours and the money you save not paying someone can go towards other mods :)

[band77one]

i am the worst person ever with tools, if i try porting that, i will be the only person to kill themselves with a dremel and gaskets.

[NJSPEEDER]

you would have to try to really mess up porting the upper. basically as long as you don't go past the outer edges of teh gasket you are only helping. lol

if you want, i am gonna be doing a plenum 'DIY' using another members car as an example some time soon. once you see it if you aren't comfortable i can take care of it for you.

[BigAls87Z28]

If you really want, I still have all the tools and will gasket match the SLP runners to your plenum. Ive done 3 plenums and 2 runners. I dont know if I have pictures of my prior work, but let me know and Ill see what I can do for you.

[BigAls87Z28]

As for modding a 305, it doesnt cost that much. I got a ZZ4 cam for 120 bucks shipped, Stock LB9 heads worked and installed with larger stainless 1.94/1.5 valves with .550 springs for 350 bucks, Pro Mag Roller Rockers 1.6 ratio for 160, and the rest of the mods were free, except the headers. I never really got it running due to lack of time and increase in breaking things, but I dont see anythign wrong with moddifying a 305.

[enRo]

Quick 305? Nice oxymoron :-D

[84HOtransam]

Quick 305? Nice oxymoron :-D


14.4@96.66.... 90% hum 90 degree air temp...full exhaust and no air filter

[78camaro]

14.4@96.66.... 90% hum 90 degree air temp...full exhaust and no air filter


correct me if im wrong but when you ran that was the track a bit wet to?

[band77one]

Big Al, was that 305 TPI or what ? i heard its really expensive to tune a car once u get the cam/heads done if its fuel injected

[Savage_Messiah]

Quick 305? Nice oxymoron :-D

:rofl: Noah you would know!! haha

[misterjuice]

As for modding a 305, it doesnt cost that much. I got a ZZ4 cam for 120 bucks shipped, Stock LB9 heads worked and installed with larger stainless 1.94/1.5 valves with .550 springs for 350 bucks, Pro Mag Roller Rockers 1.6 ratio for 160, and the rest of the mods were free, except the headers. I never really got it running due to lack of time and increase in breaking things, but I dont see anythign wrong with moddifying a 305.


Don't forget the little hammer, and water melons... Al ;)

[NJSPEEDER]

Big Al, was that 305 TPI or what ? i heard its really expensive to tune a car once u get the cam/heads done if its fuel injected

professional tuning for computer controlled engines costs about the same as a professional carb tune. there are a few people around here that do tuning or you can go to www.thirdgen.org and read up on how to do it yourself. really isn't diffeicult to tune with the software that is out now and it is really cheap to get into, abut the price of 1 professional tune can get you everything to tune forever.

[enRo]

14.4@96.66.... 90% hum 90 degree air temp...full exhaust and no air filter

and how much weight reduction? The only attempt to making a 305 fast is forced induction and/or weight reduction IMHO ... Ive owned all the third gen 305's except CFI, and they all blow.. but to each their own. the LG4 was loud after full exhaust, the L03 was great on gas, and the TPI... well... it was ok.

[NJSPEEDER]

my LO3 went consistant 14.20's weighing in at 3280 at the line. stock cam adn chip, with working a/c, pw, pl, power hatch release, stereo still in the car. it was a t-top car too :)

[BigAls87Z28]

Prevo is our resident tuner, but I belive he is busy with schoo now? I dunno, havent seen him or heard from him. That would be the guy to go too, dunno if anyone else has any experiance with OBD I PROM tuning.
You can do it yourself, I still have most of the software as I tried to get serious with it in college, but it never panned out.

[enRo]

my LO3 went consistant 14.20's weighing in at 3280 at the line. stock cam adn chip, with working a/c, pw, pl, power hatch release, stereo still in the car. it was a t-top car too :)

Ok, I can see 14.20 from an LO3 .... DOWNHILL :lol:

I have to admit tho, power+sound to city MPG was pretty decent... other than that, my bone stock LO3 was slower than a constipated bowel...

[Tru2Chevy]

Ok, I can see 14.20 from an LO3 .... DOWNHILL :lol:

I have to admit tho, power+sound to city MPG was pretty decent... other than that, my bone stock LO3 was slower than a constipated bowel...

He had edelbrock aluminum heads and every free mod you could think of with 3.54 gears in a dana 44. I'll host up a run or two and post links in a moment :)

- Justin

[NJSPEEDER]

my car used to sound and look mean, too bad it was only a 14second warrior. lol
91-92 z28 spoiler, 3inch harwood cowl hood, edelbrock headers, !cat, borla w/open plate. at WOT it sounded like open headers.
i honestly could not get anyone to bite at a stop light in that car. between teh pipes and rolling on slicks adn skinnies 24/7 no one woudl ever step up.

[Tru2Chevy]

Tim running the 14.20:
http://www.njfboa.org/JustinImages/tim1.avi

Tim schooling some guy talking smack with his brand new 'stang:
http://www.njfboa.org/JustinImages/tim2.avi

- Justin

[NJSPEEDER]

wow, i haven't watched these in a while. i miss that car.

[enRo]

He had edelbrock aluminum heads and every free mod you could think of with 3.54 gears in a dana 44. I'll host up a run or two and post links in a moment :)

- Justin

I never said I didnt believe him, hes all over TGO with those times... I always wanted to build a 305 but after extensive research, its just a waste cuz youll get much more out of the 350 :-D

*EDIT* Looks like that car got off the line reallllllllly nicely :-D GJ Id take a black 91-92 Z28 anyday :-P

[NJSPEEDER]

unfortunately there wasn't much knowledge of how to develop tbi at the time i had and spent lots of money on that car. if i had i tto do all over again i would jsut drop in 4.10 gears, LT1 cam, get a carb intake and make an adaptor plate, drop a 3k stall and a shift kit in it, tune and run 12's.
everyone cries about the swirl port heads on the tbi cars, too bad the cam is so small that it can't even take advantage of the stock flow available.

as far as building a 305 being a waste, like i said before, if you have a good running engine start collecting parts. whatever you can bolt on now, go for it. once you build the solid 350 you really want do the swap. there is no need to pull a perfectly good engine until a suitable replacement is ready.

[misterjuice]

I remember Tim's car.......i saw it the first time at a meet down there 3 years ago or something. i was like WTF is that noise.......then i saw the car and i'm like..wow that thing is fast..

[84HOtransam]

and how much weight reduction? The only attempt to making a 305 fast is forced induction and/or weight reduction IMHO ... Ive owned all the third gen 305's except CFI, and they all blow.. but to each their own. the LG4 was loud after full exhaust, the L03 was great on gas, and the TPI... well... it was ok.

spare tire out..the car weighed 3460 with me in it...its an L69..

[WayFast84]

wait! what does "quick" mean?? im talking about a number not the actual definition

[misterjuice]

Quick is a magically delicious chocolate milk type drink.

[NJSPEEDER]

wait! what does "quick" mean?? im talking about a number not the actual definition


to me, quick in a street car is 11's or 10's

[enRo]

Quick is a magically delicious chocolate milk type drink.

You kinda got confused with Lucky Charms, mayte. Someone didnt eat their Wheaties this morning :lol:

[BigAls87Z28]

quick is 0-60 time. Fast is 11's and 10's.

[Tru2Chevy]

quick is 0-60 time. Fast is 11's and 10's.

No, quick relates to ET....Fast relates to MPH.

- Justin

[fsanford]

I WAS TOLD WHEN I BOUGHT MY CAR THAT IT DID HIGH 13'S TO LOW 14'S BUT DONT HOW MUCH OF THAT I BUY....THINK IT POSSIBLE WITH WHAT I HAVE IN THE CAR

[Tru2Chevy]

I WAS TOLD WHEN I BOUGHT MY CAR THAT IT DID HIGH 13'S TO LOW 14'S BUT DONT HOW MUCH OF THAT I BUY....THINK IT POSSIBLE WITH WHAT I HAVE IN THE CAR

What do you have?

- Justin

[fsanford]

305 BORED 20 OVER SHIFT KIT DUEL FLOWMASTERS POSI REAR HIGH FLO FUEL PUMP Z RATED TIRES

[misterjuice]

305 what? TPI, TBI, Carb, CFI, AT&T, MCI, SPRINT PCS???

[Tru2Chevy]

305 BORED 20 OVER SHIFT KIT DUEL FLOWMASTERS POSI REAR HIGH FLO FUEL PUMP Z RATED TIRES

Any performance mods to the engine? What about the rest of the car? What gears does it have, what suspension mods?

If the 305 is relatively stock, and you don't have much in the way of gear or suspension you prolly have a mid-low 15 second warrior in your hands.

- Justin

[fsanford]

YEA ITS A TUNED PORT I DIDNT THINK IT WAS THAT FAST WHEN I BOUGHT IT ANYWAY I DONT KNOW ABOUT THE SUSPENSION OR GEARS DIDNT MENTION ANYTHING BOUT THEM WHEN I BOUGHT IT HOW WOULD THE SUSPENSION HAVE ANYTHING TO DO WITH TRACK TIME NEVER BEEN TO A TRACK ITS ALL PRETTY NEW TO ME

[misterjuice]

most likely it'll do high 14's. but I love to be proven wrong.

[WayFast84]

305 what? TPI, TBI, Carb, CFI, AT&T, MCI, SPRINT PCS???
:funny: :kneeslap: :bow:

[Tru2Chevy]

HOW WOULD THE SUSPENSION HAVE ANYTHING TO DO WITH TRACK TIME NEVER BEEN TO A TRACK ITS ALL PRETTY NEW TO ME

There are several suspension modifications that you can do to make your car hook better at the track. Things like better Lower Contral Arms (LCAs), a better torque arm, and better bushings can all help avoid wheelspin when you launch the car. This will in turn make your run faster, since you can put more power to the ground without spinning.

I say boon is right, lightly modded 305 TPI will prolly be good enough to sneak into the 14s.

- Justin

[The Fixer]

I say boon is right, lightly modded 305 TPI will prolly be good enough to sneak into the 14s.

- Justin

Yep. My H/C 305 should turn mid-low 14s in a car that can hook. I granny-shifted to a 15.0 at 90 mph on a 2.3 second 60' (17" street tires and lowering springs do not like to launch well) with my Monte. This was on a 90*, humid-ass day at the end of August '04. Since then, I have !cat and gotten a tune. Good luck on your quest man!

[Savage_Messiah]

Quick is a magically delicious chocolate milk type drink.

strawberry quick > chocolate quick