Jus wondering wat you guys think i can run in the 8th when its finished. its a 1984 trans am, factory h.o car, l69,3.73 rear. im doing a "muscle car conversion" meaning im taking out all the computer crap and emmisions and all the electric junk. its gonna be nuthin but motor under the hood. i got a 305 out of a 1985 GMC Jimmy full size with only 35,000 miles on it. its a non-computer controlled motor. im assuming its a LG4 but in 3rd gen f-bodys LG4s came with computer controlled quadrajets and this motor dosent have that. anyways. im building the motor quite a bit.
MODS-
edelbrock performer non-emissions carb 600cfm
summit racing stage 1 aluminum intake(knockoff of performer intake)
comp cams extreme energy 462\469 lift cam
comp cams double roller timing chain
comp cams pushrods and valve springs
heddman longtube headers
full hei ignition kit out of summit
MSD 8.5 wires
3"pipe from headers into cherry bomb extreme mufflers(no cats)
replaced 700r4 trans with a turbo 350
factory posi 3.73 rear end
chrome valve covers,timin chain cover,blah blah blah jus some stuff to make it look nice

wats it gonna run?

 

low 10's.

 

I'm lost...you're doing a "muscle car conversion"(whatever the hell that is) by taking out that evil electrical stuff yet you're going to...swap....in....a....305....?

I'm half Polish so I tend to pick up things a little slower than the average person...can you explain this to me?

 

i guess when i installed my msd 6btm, i was lurking into r*cer territory,lol

but whatever dude, do what makes you happy.
and forget that exhaust. that car needs old school sidepipes.... that would be hott!!

 

Cherry bomb mufflers FTW

Ok, I'm done, I hijacked this poor guy's thread. I can't really offer any ideas on a time since I've never been to or run at an 1/8 mile track.

 

Cherry Bomb "Extreme" mufflers.

Get it right, bucko!

 

My bad

 

low 10s? haha my stock 1990 rs with a 305tbi, auto trans and 2.73 open rear ran a 10.1. this car weighs 3150lbs, has a carb,intake,cam,headers, roller rockers, and new valve springs and pushrods, with a 3.73 posi rear and its gonna run the same as a RS? i might as well jus sell it. my gmc yukon runs a 10.3 ill jus throw a chip and exhaust on that and get into the 9s. and the whole muscle car conversion thing is to lighten up the car alot too. all my friends have nice classic muscle cars and i love it when u lift up the hood on there cars and its just a motor and fenders. no wiring everywhere, no emissions, no computer, nuthin. im jus trying 2 get my car like that. anyways thanks for all yalls help. i appreciate it.
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im putting a 305 in it because i love how people think they cant be fast. everyone has told me from the beggining to put a 350 in it but i wanna show em' that you can make a 305 run. ive had 305s my whole life and i love em'

 

It's your money but the whole "I'm going to show people what a 305 can do" has been said a million times on this site. If you're going to go through the trouble of doing an engine swap and other work why would you throw in another 305? I mean, I could see if you're having the existing one rebuilt or something but to start from scratch with a 305 isn't exactly cost effective. Then again, it's your $$.

 

Ive had 305s all my life too...course Im only 18. Id put a 350 in any day, if I could afford to lose about 5mpg...

 

in all seriousness, If you do really lighten that car up alot. I mean alot!! You can def have a 12 or even 11 sec car N/A. actually 82-84 birds are very light to start with, im not positive but i think there under 3000 to start. with the right combo of cam, heads, intake ,carb. along with stall and proper gearing you could make a fast car out of that, or anything for that matter. check out the 55nova's car. similar to what youre looking into. Like i said, if its a gutted lightweight car. its all about the right combonation to go fast.

 

its really not worth building a 305 ive done it and all i can get out of it is mid to low 12s which is pretty good for a 305 but it would be much faster with 350

 

go back to youre tpi and get a procharger Just my opinion..

Maybe 12's is all he's going for?

 

i would never go back to tpi after haveing a carb, it pulls so much harder all through the rpms, all the way to 6300, and i dropped almost .4 off my et completely untuned, but a procharger is in the works along with a big inch small block

 

So you're doing a muscle car conversion by yanking an L69 in favor of an LG4 with an edelbrock carb, mild cam and summit intake manifold???

 

Well duh! lol

 

im taking out the L69 because it has a blown head gasket and 189,000miles. im getting a FREE LG4 with only 30,000miles. and the only difference between a L69 and a LG4 is the exhaust,cam,carb,and intake and im replacing all that anyways. a L69 is just a factory tuned LG4. im not lookin for nuthing crazy fast i just wanna get into the 8s in a eigth mile. if anyone has anything helpful to say without bashing me for keepin a 305 that would be great. thanks for all yalls help

 

just refer to post #11.. i think with what i wrote there. you will easily be in the 8's
here's an lg4 build. with that power and again- weight reduction, and proper gearing. 8's!!!!http://www.goingfaster.com/spo/325_h...chevrolet.html

 

thanks for all the help. one more question if my car is a 84 trans am factory high output 5.0 car than it has a 3.73rear right? from wat i know all 84 high output cars got 3.73s from the factory and when mine ran it didnt seem to get up much quicker than my RS with a 2.73 rear. and yes im positive its a factory h.o car

 

I thought only the 5-speed's got the 3.73 rear? I don't know for sure, my knowledge of the early thirdgens is a little fuzzy.

 

your going to run an extreme energy cam with stock heads??? comps extreme energy cams even the small one your going to run are still designed to be used with after market heads it will be better than stock for sure.. but in the performance world it will run like a dog. and as far as i knopw every pre 80's "real muscle car" came with huge stupid motors.. 69 z28 camaro had a 396 firebirds had 400's and 455's vettes used well made 327's even mopar used big motors in their muscle cars 426 hemi 383bb their small small block was a 318 all of these true muslce cars used way bigger than 5.0l 305s... now that my rant is over if you want real power from a 305 its time to start putting a perf. rotating assembly get rid of that manifold step up to a hi rise and put a decent carb on there.. a 600 performer if your an edelbrock fan or a 650 double pumper for the holley guys. and as far as the sidepipe idea that made me laugh for a while befor i started ranting

 

Honestly, if you were to keep all the "electronic junk" and tune it correctly with a 350 swap (cam, heads...), you would run in the low 13's if not better in the 1/4. I can't remember the last time I saw a "muscle car" conversion of a third gen that ran any better than high 13's - with a big budget no less.


Paul

 

Aw, c'mon paul. We both know a non-computer HEI is easier to tune than a computer HEI.

 

My current daily driver runs 13.1 at colorado altitude on street tires. its all motor and i stripped out every bit of the old efi system and wired from scratch... i dunno where you think this "muscle conversion" cant make better than high 13's but mine could probably hit mid 12s at sea level. and my build is by no means big budget. i spent maybe 5 grand on the entire car thats engine full drive train and full suspension.

 

Incorrect sir, My 84 was a factory auto car and it came through with the GT4 package wich was a set of 3.73's. It's all how the car was ordered I guess. These cars from what I have read were lighter than the 85+ but I wouldnt think by too much.

The lets see what a 305 thing can do is over-rated. Buy a 400 motor and just tell everyone its a cammed 305, thats what I don to all the fox owners..

Post up some pics of your 84 T/A.. heres one of mine..

 

Ahhh ok, cool. Like I said my knowledge on the early thirdgens is a bit fuzzy.

 

I dont know them well either to be honest I just ran my RPO codes before. I just know my car is light and its a "Cammed 305"

 

A 400 cu in (6.6 L) small-block was introduced in 1970 and produced for 10 years. It had a 4.125-inch (104.8 mm) bore and a 3.75-inch (95.3 mm) stroke. Initial output was 265 hp (198 kW) and was only available equipped with a 2-barrel carburetor. In 1974 a 4-barrel version of the 400 was introduced,while the 2-barrel version stopped production in 1975

i took that straight from wikipidia the internet knowlege *****... 265 horse 2 barrel 400.. im sorry but what kind of cam make a 305 make that kind of power??? 400's are not that powerful compared to their size but seriously be real a 400 will out due a cammed 305

 

265hp out of a 2bbl and some junk smogger heads are pretty damn good though! They werent powerful in stock form, well compared to any of the SBC's made at the time they were. But they have so much potential.

In stock form with just a cam I bet he could get a lot of people to believe its just a 305 with a mild cam. But anyways I meant it as a joke because some mustang owners are dumb and its funny. I have put a lot of time and money into my motor and and have learned so much about these big boys. I can honestly say I will never go back to a 355 again unless I pop both my motors.

 

Easier yes....

Do people do it 100% - not likely...

What I'm trying to say is that when a typical person (no you are not all typical) goes the "muscle car route" they totally omit tuning as part of the whole package. It is pretty easy to chip a 400hp motor down to 275hp if you muck up every piece along the way:

wrong cam
wrong intake
wrong heads
carb not tuned or is just plain too big
ignition curve way off
wrong headers and exhaust - or using stock manifolds
wrong gears
no suspension mods


Hopefully everybody gets the point - money spent doesn't mean it will be fast or hold together... Synergy is what you need.

 

I agree 100%, you need to make sure everything is matched. My heads and cam are matched to my intake and needs along with my converter being streetable yet big enough to get this thing going. Crossing the line at the right RPM etc.

 

no 69 z28's came with 302's in em actually.. duh.

 

depends on how you ordered them. but ya i take it back ss came un ordered with a 396 z28 with the 302. but you could order it the other way around if you so choosed

 

This may be a silly question but will you get enough torque from a 305? The great thing about muscle cars is theyre all raw power. The bigger the engine(and the more torque) the bigger the wheelie. Thats what its all about
Id like to see what u can do in all honesty(not bashing). In my opinion though you get get more out of a 350.

and my 84 cammy weighs 3027lbs I love how light the earlier years are

 

Hmmm... under hood just motor and fenders with no crazy wires, and electronic stuff... You don't need a carb just some time and wire hiding ability. Mine isn't even all out, just a little cleaner!

 

no, it wouldn't have been a z28 if it came with anything but a 302. The rpo z28 was for the 302 special performance package, without that option the rpo z28 would not have been present. So yes you could order it however you wanted but if you wanted a camaro z28 you were getting a 302.

Ok now I know what I just said was completely off topic.. but why the hell is there a picture of a mustang engine bay above this post.. thats very off topic.. not even an f-body last time I checked..

 

He was showing you dont need to do a carb swap to be a muscle car and clean up the engine bay.

Cammygirl- Are you sure that car only weights 3027?

 

it's still not a muscle car though.. unless it was build between 1964 and 1972 it will never be a muscle car.. and as far as fuel injection the only muscle car I can think of that was ever injected would have been a vette and it's debatable if you'd consider and old vette a muscle car or a sports car.. also this whole "true muscle car conversion" thing is quite laughable.. all he's talking about doing is molesting the car and ruining any type of resale value it may have had..

 

Mustangs and Fbodies are not muscle cars... and the photo was to show you dont have to have clutter with EFI. Mine could also be a LOT less cluttered if I had a show car or dedicated the time to it.

 

Lol pretty sure, thats what it says on my title. It could be wrong though.

 

My title says 3300 and i weighed it in with me in it at 3680... little more than the title, also 25thmustang nice clean engine bay looks good, also nice battery too lol we sell those where i work Advance auto parts! haha

 

Yeah you prolly right.

What advance do u work at in NY?? I pretty much live in the one in Latham/Albany on route 9.

 

canadaigua,ny yea its quite a way from you lol come on down sometime and we should take a drive or something. it would be fun.

 

canadaigua

Omg mad far hahaha

 

I've been to the one in Albany a few times. My family lives there and I went with my uncle in his 4th gen Camaro to pick up some parts.