my trans am is just finishing getting restored, it has a chevy 350 sb 4 bolt main, balanced crank, edelbrock intake and carb, flowtech shorty headers, roller rockers, upgraded timing chain, oversize heads, it has been properly rebuilt aswell.
adding a borg warner t5 in place of the original but from a 1990 TA other stuff is factory how fast do you think it will run? i will post results once i get it to track for 1st time

 

Oversize heads?

I don't know how friggin fast it is. You tell me!

 

Absolutely no way to know.

Here's why:
Could be a 500 HP terror, or 180 HP wonder. Tells me nothing.
Does nothing for power. Would be better if it was a balanced rotating assembly {tongue in cheek}
{sarcastic comment deleted}, which Edelbrock intake, and which Edelbrock carb? (those carbs not exactly the first choice for power, regardless)
Not exactly the first choice for power. Okay for low RPM torque, better than stock manifolds, but that's about it. Information about the rest of the exhaust would be helpful as well.
Like the crank, not really power makers.
Depending upon exactly what that means, may actually reduce power.
That's good, but like most of the information provided so far, doesn't tell us anything.
That's also good, will probably live longer than the original tranny, but knowing rear gear ratio and tires would be better information.

Bottom line: Absolutely can't tell from the info you provided. Even if the details were provided, driver skill, track and air conditions, tune, etc., can all have profound effect on performance.

So, take it to the track, and then you'll know. If it seems slower to you than it should be, we might be able to help figure out why if we have the whatsinit details.

 

Dirty canuck - where in the great white north are you located?

 

Threads like this give me a good laugh.

 

I was probably born smart, but I wasn't born educated.

So, DC, although my response was probably a little more terse than necessary, you can see that we really need more information from you to even get in the ballpark. From what you've told us, I'd guess your first trip down the strip will be mid-16's. Depending upon the details, it could be in the high 12's - there's a big difference between 16's and 12's.

 

17 seconds, if the tranny doesn't break.

 

does a t-5 even bolt up to a t-10 bellhousing?? 82-83 were 4 speeds i believe..

 

There is an 82 Pace Car Camaro in the history section and it has the LG4 T5 combo.

Edit: Oops, it was a 4 speed manual.
https://www.thirdgen.org/forums/hist...ar-1005-a.html

 

No, a camaro T5 is tilted and the T-10 BH is straight up. He's probably using a T5 with a T5 BH. (heck, it probably had a saginaw or auto tranny anyway).

 

The T5 was available starting in '83. I assumed that's what was meant by replacing the original with a 1990 T5.

 

pretty sure you'd be in the 15s.

A mild 350 could very easily be there.

 

i bought a new bellhousing, and my trans am came from the factory with the T5,305 combo and the T5 does sit on an angle. By the way im in saskatchewan, as for the exact specs i dont know yet i just got the just of it and bought it i will get specs written down once i finally get car back.

 

here is the scoop on my car i bought it when i was 16, I am 24 now. the whole time i owned the car i drove it maybe 6 months altogether, the transmission kept having problems, suprise suprise hey! so after buying every single thing to do with standard, even the springs and clutch cross bar which was 279$ guess what the weld still broke on the new cross bar so i had my instructor who owned a welding business finally weld it right. the transmission was rebuilt, and i was finally on the road again, 1 month later i blew the engine!.. I was sixteen and liked to pick on mustangs what can I say so in went a 305 out of a van, now i had radiator probs, i went thru 3 0f em, the rad problem finally blew that motor, so instead of taking a baseball bat and smashing the car like i wanted to do so bad i convinced my family to let me keep it at their place. So it sat for 7 years. I get the call this spring that the neighbours are bitching and want it gone. I dont blame them. So I got the ball rolling on it, As of right now the car has had extensive body work inside and out, is sitting with the engine bay painted and door jams and hatch painted as well, the car is in primer, and the 350 T5 combo is getting bolted in either yesterday or today. I work virtually every hour of the day! the sun is down when i go to work and down when i go home. so i got no time to do much of anything myself, i got a guy with 30yrs experience doing all this work. If you asked why I never got rid of this car and just save the 8 thousand dollars i have put in this car since i was 16 4 thousand then and 4 thousand now. It`s because it is my first car, that my grandfather who raised me bought for me. He was also a mechanic who had me wrenching on cars since i was six with him and we also worked on that Trans Am together.This car also only has 171000KM on it which is 106250Miles

I think the new combo will bring it to atleast 14`s cuz the stock combo was faster than 17`s thats why i never lost a race to a mustang.

As for what i will run the quarter mile with, im buying Mickey Thomson street radials that can go on the strip,i have some light weight american racing rims on it already.

 

have to be one slow *** Mustang, or the guy couldn't drive...for you to beat any Mustang (1984 and up) V8. Cause LG4s suck

 

My LG4 got my 86 Trans Am into the 14's with only a carb and intake swap.

 

I am talking bone stock

 

Sheet, I don't think an Edelbrock 1406 carb and Performer RPM 7101 Dual Plane Hi-Rise intake would add all that much power to an otherwise bone stock LG4.

 

I really don't know---all I recall are the road tests of 82 Z28s with 4 speeds and the LG4. 17 sec car.

Now maybe a slightly newer one with a 5 speed was a bit better. I have driven a few LG4 automatics....they are pathetic. So was my TBI 305....but I bet it would win

 

well first of all the 83 trans am comes with 5 spd not 4 spd if it is a manual, i dont know what automatic transmissions it came with but honestly who cares about those, and second if you got beat in a trans am by a mustang maybe it was you that was the poor driver??
----------
mind you the stock 83 trans am is not good if your racing on a highway but is a terror on the streets.

 

Dead on launch.

Stock '83 is a terror on the street huh? Well, hmmmm.... given the condition of those left, I'd have to agree. Wouldn't want to get hit by a stray part falling off of a jacked up like a ***** bone stock '83! That's terrifying!

 

well it may not be a drag car sitting stock but an 83 trans am stock with 5spd, will beat most of its stock rivals, and if you put a lil money in it your laughing.

 

No need to put any money into it, I was already laughing.

Though considering the condition of most that I've seen lately, and the prices for those that are still nice, if you have a nice stock one, leave it the hell alone.

 

you seem kinda hostile towards the Trans Am i suppsoe you got an import.

 

Hey hey, come on guys... quit bashing this guy. Most of you guys had an all-stock 3rdgen at some point, and most of you guys started with the LG4 too I bet. Gotta start somewhere.

 

well thanks adam and actually I am upgrading soon i just need to find a good 455, I actually need two of em i want my cutlass to have one aswell. Your in saskatoon aswell so you probly know how easy that task is, may settle with 454 for cutlass, also looking for a dodge to do and a truck then i will relax for awhile.

 

I really don't believe we were bashing him at all. Or the LG4---it is what it is.....and it was a dog. Plain, simple and true. Its just sad ppl don't realize that.

 

Nice try, but no. I'm a realist and that thing is about as terrifying on the road as a worm is in a fish pond. As stated above, D-O-G. To pretend otherwise is, well... what I'm 'hostile' towards.

I'm hostile towards ignorance. That thing with bolt ons probably has the same power, if not less, than my 'burban. Certainly less stock to stock (by about 60-70 hp).

Oh, and I've owned almost a dozen gta's alone, my personal fav of the thirdgen line. Try again.

 

well I had a chance to see what the motor can do and It was good enough to make me decide not to put my 400ci sb in now next time a motor goes in im just gonna end it with 455 6spd combo

 

A stock 83 Mustang would probably be faster. Same thing with the little kids driving a moped.

 

The original question was "how fast will I be" with some very nondescript information. The next statement was when stock, the car would beat stock rivals. That's pretty far fetched, unless you consider V6 Mustang II's to be "stock rivals".

Still haven't a clue what cam, or what these "oversized heads" are. Or intake manifold. Pretty basic information.

Yes, gotta start somewhere. For the day, the LG4 met the corporate objectives. Today, it's outrun by economy cars. Regardless, without basic information, the original inquiry can't be answered.

It's also a reality that cars are slower on the track than you think they will be based on how they are on the street.

 

well its like I said I raced plenty of mustangs and beat them all so you cant tell me a v6 is its competitor just cause your stock third gen may have sucked doesnt mean they all do plus you probly had the automatic which i do agree is slow. My buddy had a mustang gt 88 i beat him by two lengths with its stock 305.

 

its called physics...look it up

225hp/300lbs ft Mustang that is lighter then a 3rd gen

VS

145hp 245lbs-ft Camaro that is heavier.

Do the math man---its not magic. It's science. Your buddy is a shitty driver and you beat him--end of story. But not because you car is faster.


But by thinking your car can magicaly outrun a car that has at least 75hp advantage....your looking like you have no credibility

 

thats aweful generous with the ford dont you think?

 

That musta been a real mean 305,because back in 1992,when I first bought my 87 IROC,them 5.0 Mustangs gave my tuned port 350/700r4 FITS.I don't know that I ever outran one unless they missed a gear.I loved my Camaro,had it for 14 years,and still dearly miss it.But in stock form,even the baddest of the bad ones were pretty lackluster.

 

i just raced maybe 4 or 5 random v8 mustangs on the street most of em i think were auto's but buddy had a 5spd and yes i am a better driver than him.

 

87+93 5.0 were all 225hp.

 

LOL, sure you do.

 

well i got more info on my motor it has been balanced, semi hydraulic lifters, dual timing chain ball bearing assembly, edelbrock performer intake, and i guess it has been bored 30 over or watever to make it a 355, i forgot how he worded it, it has flat top pistons, also as for the heads i guess they are 350 heads but from an older motor, flowtech headers, crane cam still need to write down the specs for the cam. and a 650 cfm edelbrock carb,

I dont know much about boring so the number confused me, and again for more exact specs i dont have them yet.

And as for the mustang the only good thing about ford is they circle all their mistakes.

 

Cylinder bore - stock 350 is 4.000" diameter bore. The typical over-bore is .030" over that, or 4.030". When you do the math, that takes the 350 cubic inches (really 349-something) to 355 cubic inches.

Older 350 heads - probably smog era parts. Very common, 76cc chambers, sometimes 2.02" intake and 1.60" exhaust valves but they still don't flow well.
That's probably your #1 limitation. After that comes the Flowtech headers and Edelbrock carb.

I'm guessing 16's, although you might work that down into the 15's.

 

semi hydraulic lifters? ball bearing timing chain eh? 350 heads? crane cam?
Huh, what's next, 3/4 race cam? Maybe the guy topped up your blinker fluid before he sold you the car too....
Unfortunately many car guys only keep basic specs, hoping that will be enough to wow people. There's a zillion crane cams for example, so the brand tells very little Also, a semi hydraulic lifter? Are we talking about Rhodes here?

 

all i need to know if the part has been upgraded thats good enuff for me, if im getting a deal on it i dont need to know the exact specs. I would have bought that motor stock for the price i paid. and as for the motor it moves like crazy i cant even open it up at all in the city too many gears to fast.

 

I guess some guys don't believe in the old saying, "better built rather than bought." Granted I did have a shop line hone my block and bore it .30 over but how many of us can do that kinda work out in the garage. AAY

 

Im in an apartment at the moment waiting to buy a house but thinking of renting a garage to work in on the weekend, but 4 now im S.O.L

 

The more you talk,the dumber you prove yourself to be.Good luck with all this junk,might look into swapping in a roller catalytic converter and some of those fuel ionizing magnets,you could tour with top fuel cars then.

 

you must be a ford guy. If you dont got an answer simply keep your two cents two yourself.

 

Im starting to wonder if this is some kind of joke.

Just because you rebuilt it doesnt mean it's faster than stock. You rebuild it with parts that were stock on other cars and it's still a bunch of stock parts. The engine block and everything below the deck (Aside from the cam) will have no direct influence on how much power you make beyond the pistons affecting combustion ratio.

The cam, heads, and top end are what are going to affect power.

You have a mystery cam that could be far worse than stock in many, many, many ways. It could be far better. But even if you have a decent cam (Which is silly in and of itself since cams just need to match the other parts you have. They have to work well with your intake, exhaust, and compression ratio in order to work properly, otherwise you're going to have a dog of a motor no matter what.) you've got old smogger heads (most likely) which will give you a terrible compression ratio and a terrible flow rate, regardless of how big the valves in it are.

The Edelbrock intake could be a stock replacement intake, just a shinier intake the flows as much as the stock one did, or it could be a realy nice one. Given what you know about your motor, what you dont know, and what we here know and don't know, I'm almost willing to hedge my bets on how nice that intake is. The Edelbrock carb isnt a favorite for performance either.

You REALLY need to get the specs on that cam. Ask for total duration, ask for duration at .050, and ask for the max lift. Get numbers for intake and exhaust valves. You'll have 3 pairs of numbers. Get back to us on that.

 

well the reason i got this motor is because the mechanic that built it passed away, so the family sold the truck in turn the buyer sold me the motor, and since my car had a 305 originally id say it is an improvement, the guy has been building engines his whole life im sure he improved the cam, you would have to be pretty stupid to buy a performance cam and have it turn out worse than stock.

I think you guys are gonna be suprised once i hit the track in the next week or two.

 

You WOULD have to be stupid to put the wrong cam in an engine.But I'll bet you've got it in you.We may be surprised of it's performance,but I'll bet it ain't in a good way.

 

Wow....this guy gives Canadians a bad name

This has to be a joke, seriously.