who would win a 5.0 l69 stick vs a 5.7 iroc

 

350...

 

What's a three letter word for 'duh?'

 

how about the smiley, it's close enough

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my brother has a 5.7L tpi '87 IROC automatic. an hour after he bought it, i lined up with him on like 3/4 mile straight-away. Of course, me owning my 5.0L tbi '89 Formula stick longer, i know how to drive better. Anyways.. he was spinning his tires all over the place and still killed me by over 5 car lengths before i slowed down.

https://www.thirdgen.org/newdesign/tech/techdb.shtml

they have all the power listings for our cars, very useful :P

-fly

 

The IROC-Z 350 will win.

 

I don't know about all of this IROC beats it stuff. Lets all just remember that the L69 in '84 with a 5 speed always got 3.73 gears and an IROC at best had 3.27 but non-G92 cars have 2.77's. The L69 only had 190hp but the IROC only had 230 hp but I think that a stick and a better rear might be able to beat the IROC. But put a decent driver behind the IROC and a great driver behind the L69 my $ is on the L69 (5 speeds are cool and 3.73's are a heaven sent).
All IMO, Later, Garrett

 

yeah sure, except for the 350's 100 or so lb/ft of torque advantage, but sure why not?

I have seen weirder things happen.

 

Come on give me a break here I love to cheer on the underdog. All I have to do is leave out certain pieces of information (not lie just leave out) like the huge torque advantage. But still I think it would be closer than most people think.
Later, Garrett

 

Yep, unless the 350 driver is horrible and falls asleep.

 

i agree with garrett

 

Come on you guys the '84 Z with a L69 and a 5 speed was good for low 15's even a few high 14's. And I know that a stock '88 IROC is a mid to high 14's car and that with 3.27's, what if the car had 2.77's I think that it's not as easy as saying IROC wins.
There's more to a car than Engine hp and torque, I had rather have a stock engine with a great tranny and rear than the other way around. And come on let's face it a 700Rcrap isn't as good as a T-5 and don't even compare 3.73's to 2.77's. IROC doesn't automatically win.
IROC are not gold plated awsome kings, give some respect to the older Z's they've earned it.
However IROC probably does win Probably !!
Later, Garrett

 

i don't give a ****. I know my L03 is slow, thats the point of moding, and rebuilding.

 

well im talkin stock for stock not modded i can even mod a stupid topaz to beat a corvette if i had enuff money but since my car is stock cept for a aluminum radiator and a 5inch monster tach

 

or a vega
or a pinto
or a monza

 

yep. a vett, need about 200 shot of NOS, turbo charger.. :P

stock to stock i don't think the 5.0 would win..

my car is stock except for the K&N filters, and aluminum radiator.

-fly

 

No L69 stock did 14s. They were low 15s at best.
Only 3rd gens to break the 14 barrier at least were 350s, 305/5spd G92 option, TTA and Firehawk.

 

Well when I said few I meant like 2, I'm sure a few ran 14's , But still Mark you can't tell me that a stock '88 IROC with 2.77's is a high 14's car, it's not it's low 15's. And you said that the L69 is a low 15's, there it is a rather close race, Equal drivers I give it to the IROC but the IROC doesn't always win a better driver in the L69 and we have a race.
Later, Garrett

 

Um, an '88 IROC 350tpi can do 14.7 or so, no way with a decent driver and good conditions will it run 15s.

 

Yes Mark I understand that an '88 350 TPI will run a 14.7 however, you need to be more specific that is with 3.27 gears and what I am saying is that if the IROC had 2.77's instead of the 3.27's the L69 Camaro would have a pretty good fighting chance. I know that an '88 with a 3.27 rear wouldn't even be worth racing an L69. However my whole point has been the fact that the 2.77's suck!!!!!!!! and the 3.73's are awesome in the L69.
Later, Garrett

 

i think jocww should just get a new manifold and carb and be done with the iroc

 

true, but you have to factor in the 700-r4's deep first gear. with 2.77 a 350 iroc will still run high 14's. i have never seen a bone stock L69 t5 in the 14's even with the 3.73's. dont get me wrong, i love the L69 and would take it any day over the L98 but i still think if both cars had the same driver skill the L98 will win.

 

why in the world would you take an L69 over a L98?????

 

carbs = good
TPI = not as good

i dunno. yes, you always could convert an L98 to a carb, but still. with bolt ons the L69 could hid mid 14's and with some heads and a cam solid 13's with ease.

 

me want simple bolt ons what will be the easiest best hp for dollar bolt on

 

i thought that all of the L98 cars had 3.27 gears. i've never heard of a 2.77 geared L98, but maybe i'm wrong.

i think that hands down the L98 will win, provided that both cars are stock and the 350 is in tune.
the L69 would have a chance, but would have to pull off a perfect launch, shift points, etc. and the 350 would have to spin off the line.

 

yep they're out there..

 

so what would i have to do to beat the iroc and the lt1

 

An IROC-Z28 350 TPI will run low 14's with G92. Yes the other Z28's are cool, I also like the 82-84 Z28's alot, but in performance the IROC-Z's do everything better. Looks is opinion I guess, but I think they kinda look better too.

 

it sucks that irocs couldnt come with t56 or t5

 

Yes they did, I own one and have the RPO sheet to prove it. I'm not sure why people think that a 3.27 is so much better than a 2.77, I mean yeah it is an advantage and I am planning a gear swap (to a 3.45), but its not a full second, not even close. It really isn't a huge jump in gearing, and its mostly just an off the line advantage, I still say the 350 will win. Did we even find out this car had 2.77's?

 

why couldn't an Iroc come with a T5?

 

He either means a 5spd 350 combo, or knows nothing about these cars.


Oh, and to the earlier comment about having an L69 cause of carb. What you said makes no sense, you say heads/cam or whatever and low 14s. Well a stock TPI 350 is a mid 14 car. By the time you throw all those mods onto an L69 to run 13s, you'll have a 12 sec 350tpi.

 

u r mean mark

 

I never intended to get too wild with my L69 car, yes they do have 3.73, even the autos. you can have some fun with that motor. I've heard that carb and ignition mods (on the existing setup) alone will squeeze another 25 horse from there.

lose the "air silencer" the little chocking screen thing in the air cleaner.

get a K&N and dual snorkel and/or make sure the cowl vent is working.

hedmen shorty headers, easy to install. Highflow cat and cat back, all mandrel bent.

an intake wouldn't hurt, but the stock aluminum one isn't that bad. maybee port it.

the 305 HO has 9.5:1 compression and a better cam than a non HO, I think compucam has a 2030 grind I've heard works very well with the L69.

my car always responded well to a slight timing advance.

finding a set of V-belt underdrive pulley would work well to.


although my favorite all time mod: 16x8" rims w/ 245/50/16 tires and hotchkis rear end stabilizing and traction kit. at stock spring hieght, I could not get my wheels to spin!!.....and the auburn posi unit w/3.73 richmond gear helped some too!

good luck beating a TPI 5.7....maybee with some NO2 or something.

 

??? I'm sure you've heard of Motorweek - the auto show based in Owings Mills. They got a 83 L69 Camaro to run 14.9. Even better was the 85 TPI auto Camaro, which ran 14.7

 

but that is with a professional driver. hell, pro's can get new LS1's to run 12.9, but i doubt anyone here can do that......

 

A L98 with the 2.77's will still hit 14's.

 

Thank you. And I don't see why any one would want a 305 even L69 over an L98.

 

i have a dual snorkel already. so all i can do now is exhaust. what did u say about doing stuff to my carb and distributor

 

Advance your timing, and there should be a tech article on the homepage to tune the carb.

 

cant u just tell me

 

No, b/c I don't know how, I don't have a q-jet anymore.

 

u made a post in the carb section

 

the L98 is cool, that doesn't mean the L69 is no fun to play. sure, the L98 has some ballzy torque, the L69 won't match the torque, but it sure likes to rev!


ditching the computer is a mistake in most cases, a good working q-jet will deliver economy and performance = street drivability

advancing the timing is one way, I never messed with the aftermarket HEI (high enrgy igniton) it's your stock electronic ignition, but I did replace everything exept the distributer itself. new plugs,wires, cap & rotor, and ignition module. no need for fancy stuff, just QUALITY replacement stuff. I'm sure the Accel and other brand name stuff can't hurt, but ignition is ignition in most cases, and your looking for bang for the buck.

you need to visit the q-jet boards!!!! change the rods & hangers!!

now that I remember, Pontiac magazine did "project: traithalon thrash" with an '84. they did get some kind of 14 sec time from it with like 175k on the clock!!!

if you have the money and patience (one equals the other) to install or have a cam installed, you will love it....no bolt on crap is going to do what a cam does. BTW the stock exaust is very good on those cars.

 

actually it was the tech board, and I was askin about it, because someone wanted to buy it, it was just layin in my shed, but I'm sure my mom buried it somewhere and now I can't find it.

 

Good point junkyardog, but patience doesn't equal money, but with money you don't have to worry about patience .

Anyways the reason some one would take a L69 over a L98 in a race is beyond me. If you read my posts I never said an L69 would beat a 5.7 IROC I just said it would be closer than most people think.

But to tell you the truth I may actually take an L69 over an IROC 5.7 for 2 simple reasons. 1 sentimental value (my '84 406 car was an L69 when I bought it). and 2 Hello 5 speed , way more fun than just putting it in D (or OD) and going.

Later, Garrett

 

can i just bore engine would it beat the 5.7 if i put a 350 crank and bore it out

 

No, boring and stroking a 305 is like having sex with your cousin, sure it would be fun and different but It's Just Wrong. This conversation has been brought up many times and every time the results are the same if you want to go fast cheap (not saying a 305 can't be fast) get yourself a 350 or 400.
Plus a 5 speed w/ 3.73's backing up a 406 (.030 bored 400 ) goes like a raped ape.
Later, Garrett

 

u wanna give me one of those blocks and help me pass smog