mw66nova

iTrader: (13)

they were very naive on my part, wouldn't listen to reason, pretty much the normal crackhead responses to anyone that says building a 305 is a waste of time. the only difference between me and the other people claiming they want to build a 305 is that i actually did it, did my homework with a couple key components, and yielded favorable results.

ZONES89RS

iTrader: (2)

Well, im sure when i get a S10 to throw my 4.8 in from my 94 GMC with a cam, there will be doubters. But, 7800 RPM will allow the power to pour in. Already have beat 6.0 trucks and LY6s, L92s with the 94 GMC with the 4.8. They dont want to believe it is less than a 5.3 that banged them up.

kmcn47

i'd like to, someday when i can afford to do it right, build a 4.8 bored out to 5.0 that way i could have an ls305 and beat the old "if it aint a 350 it aint no good" "4 bolt main" guys by miles instead of feet (stock 305 wasn't too bad) just so i can make it look showroom stock right down to the 5.0 Liter High Output decals until you open the hood, i cant wait for the "that aint a 305 man thats a corvette motor" (actually thats a truck engine) lol

mw66nova

iTrader: (13)

actually, this is still on my car...

ZONES89RS

iTrader: (2)

We talked about the 5 liter LS didn't we Matt? Would be cool. Still cannot wait to hear my first 7800 rpm 4.8.

TxTtopZ

You can't have a V8 Camaro that runs low 15's or even high 14's. It's a cardinal sin in my book. That being said... Na, I'm mainly doing it to make a nicer G92 example that runs good. Nothing more. I figure a nice LB9 with vortecs and some intake work and a few bolt on's will get me a 13.5. From there it's all cold A/C and looks. Maybe after I get a boat I will do the LS1/6 speed swap. The cars not going anywhere.

Mw66Nova... I bet you got just a much praise as greif. Well... almost as much. Even if IROC's are slow, they are still cool cars.

NemeSS-TyranT

iTrader: (1)

4.8 is one of the most reliable engines ive ever owned.
365k miles, zero drips or leaks. plenty of hp. my truck pulls pretty hard.
just tune. gets 22mpg on 87. easily over 300 with cai i made and tune.. never goes above 130•, with stock thermal clutch fan
i have 2010 4.8 with 243 heads and 90mm intake for it in reserve.
when i drop that.motor in, im gonna get shorties and tune for it. stock cam. i love the 500rpm idle. sometimes i forget its on.
and i know it will handle 700hp and 7000rpm reliably.

tylercamaro

iTrader: (1)

if you reach 7800rpm please post a vid id love to hear what that thing sounds like at that rpm.

mw66nova

iTrader: (13)

i remember the lsx305 conversations, and it's not completely off the horizon, but it's not a priority at all right now. a 5.7 piston on a 4.8 crank is 312" and is something that i've thrown around a little.

i believe the 7800rpm is possible given the bore/stroke combo, but i'd like to see a solid roller and adjustable rockers just for stability.

Tx TtopZ, fighting disbelief was the most painful thing of the whole experience, lol. i like the idea of a hopped up g92 car honestly. i had a vision for a factory "ss" type of car, that included all the top available pieces, but being stealthy, to include stock manifolds, but build a mandrel bent y-pipe and proper exhaust system, and putting in something in the mid 21x* duration wise. but the vision included a 350, just for the bore size and cylinder head selection. keep me posted on what you end up doing.

tylercamaro

iTrader: (1)

i want to be included in these lsx305 conversations. i was planning a 5.3/400 combo but it might be cool to do a 5.0lsx and either the 400 or keep my 700r4 and build that a bit.

mw66nova

iTrader: (13)

find genIV 4.8 rods (factory floating and proper length), use 4.8 block and crank, bore to 3.898", then put a stock replacement ls1 type piston on it (or a domed one for that matter) just get it setup for a factory rod length. it's definitely a mix and match of parts, but on paper it'll work. i don't know of anyone that's done it yet though. it's technically a 5.1L but not sure anyone would question it.

tylercamaro

iTrader: (1)

the wrist pin location between a 4.8 and a 5.7 are the same? thatd be unique. i may just try that.

mw66nova

iTrader: (13)

yes, the difference is made up in the rod length. unfortunately, there are no shelf 6.275" rods, so you're limited to the stock rods. cool thing is, they're proven to handle some pretty serious abuse so that's not something i'd worry about too much.

tylercamaro

iTrader: (1)

not worried about that just worried about a piston slapping the head or not even coming close to the top of the bore. would a 4.8 bore out that far even?

mw66nova

iTrader: (13)

yeah, it's pretty common actually. i would definitely have it sonic tested before proceeding, but they're normally ready to rock. search for "iron ls1" for more info.

tylercamaro

iTrader: (1)

will do!

kmcn47

me too! although it'd have to wait til after school and me having alot better job

i saved this in word, so i'll always have it here i thought i was the only one crazy enough to want a modern ls engine, yet it to still be 5 liters for correctness in my head

ZONES89RS

iTrader: (2)

My 4.8 that I will be using is a 2009 model with 243 head from my 94 gmc. I will not be doing anything more than cam, pushrods and spring though. Set the reb limiter to 7800 and let it eat. Have seen enough 99-2004 4.8s do it with the older rods that were not as good. If it let go, is just go get another from the scrap yard!

tylercamaro

iTrader: (1)

pics of ls swapped obs?

ZONES89RS

iTrader: (2)

The truck? It is nothing special. Just a carbed 4.8. Have whooped some 6.0 and 6.2 Chevy truck because it weighs so much less.

Sojer

Here is something else u guys can talk about. My new set up what u think it will do. 355 113 heads, stock vette intake, full ported plunem, 1.52 rollor tip rockers, 12-364-4 comp cam .477 lift, 9.25 to 1 CR, TES shories, UMI torque arm, tube lcas/panhard bar, alnm HF water pump, PCM4less tune, stock 700r4, 3.27 rear end,under drives pullies, 150 shot wet. 3350lbs with me. What u guys think it should put down, and do in the 1320.

Sojer

And 1le drive shaft (alnm)

NemeSS-TyranT

iTrader: (1)

^
13.5 n/a
12.75 nawwsss

tylercamaro

iTrader: (1)

and your running such low compression? does this one actually run properly?

Sojer

The motor came with 9.2 to 1 its a create motor. I just swapped the heads and yes. Its sbc running 8.5 to 1 & lower. And it runs fine. I didn't want to but new pistons, and reblueprint the motor.

tylercamaro

iTrader: (1)

so its 9.2:1 or 8.5:1? either way i say fail.

GenX'Motorsport

Seems like the perfect motor for a procharger..
He wont be a "Fail" then..

ZONES89RS

iTrader: (2)

Sounds like a boat anchor. Will run OK, thats about it.

tylercamaro

iTrader: (1)

plus a stock transmission i doubt that cam will like a stock stall at all.

Sojer

Why so much hate tyler. My cam is made for stock tpi cars and its perfect for stock stall speed. And I said its 9.25 to 1. I'm looking into a t56 swap for my trans but want something bigger than the 3.27 gears. I made this motor to be reliable. The spray is for racing. Your dislike for me u can keep I'm sure u are much older. Chill out, u don't like me or 305 move on. What's your current set up. It runs and sounds good.

Sojer

I will race u tyler u not to far from me

tylercamaro

iTrader: (1)

u aint the sharpest tool in the shed, my friends and i still get laughs from you trying to offer me 800 bucks for my 383 plus a payment plan. u sound ignorant a majority of the time. your car didnt run right so you must notve done something right and not awhole lot adds up with you when your telling a story.

your 305 was a piece until it was beating ls1 and lt1 cars likely by people who didnt know how to drive, i know people in that whole 7 mile street race area, they know your car, its nothing spectacular from what im hearing, seeing on video etc.

ZONES89RS

iTrader: (2)

So, did you mean brightest crayon in the box or sharpest tool in the shed? Lol

tylercamaro

iTrader: (1)

tststststsstststs, long day yesterday.

Sojer

They don't know me in the "7 mile area" because there is NO STREET RACING over there. My rockers was not adjusted. U still mad about some last year stuff. I didn't buy it so what some one did. Get over it and I said they was bad drivers 100 times. But if your car run as fast as your mouth u should beat me real bad. Will u be at the M&G this year, I would love to meet you I bet u are a cool guy, just a lot of misunderstanding over the web.

tylercamaro

iTrader: (1)

m&g was a week ago. probably is and old car went bye bye new car is starting from the ground up.

Sojer

I was looking for this bad driver in zl1 15sec in the 1320

NemeSS-TyranT

iTrader: (1)

^
at the end of the day he still drives home in his new zl1 Camaro.
maybe he just bought the car. and is learning to drive it.

keep sippin on yo haterade

Boreen

I can't believe this is still going.
I read the first few pages and last few pages, who the hell has the time to read em all?
I guess I shoulda swapped in an LB9 instead of my little 376 engine

Got some good laughs outta this thread tho. But my main question is, why mod the 305 still? It's my opinion but I just don't see it's worth it when bigger displacement is so cheap now days. Hell, I have two 350 SBC engines sitting in the shed. Same with a 327. We have no use for them at all anymore.

Street Lethal

iTrader: (16)

... and my question is, why not?

charlie894

iTrader: (1)

I just wanted to thank all of you for this thread. I killed a ton of down time at work today reading this. Lol.

Jonesyfxr

iTrader: (2)

Man, I wanna see that engine!

Dominic Toretto

His uncle is probably talking about the smog era corvettes. My grandma's Buick can beat those.

67camarorsss

Hmmmm... Wouldn't his Uncle's brother be his uncle too????? Must be Uncle Dad...

kmcn47

grandmas dead Dom! just like dad

Sinfulrelations

Sojer

Sounds good

big hammer

lol this thread is still going?

Slayerx666

everyone still arguing about a 14 second built 305?

I remember my first 305, thought it was a rocket ship. I was coming from a 6 cylinder 3.8 carbed g body.

Then I got a ride in a stock lt1 car. Lol

cuisinartvette

Oh there are cars running the 7 mile area you just have to know when. Real ones like 7 and 8 sec monsters
Detroit has some of the fastest street cars around, period. Real street racing .

If youre going LSx go as big as you can just tell them its a 4.8. They look the same why go small?