C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

87 vette ( 400hp)

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Old Sep 23, 2011 | 09:13 AM
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Default 87 vette ( 400hp)

Hi guys I love my 87 , except 240hp just deprives the car of being a real vette , I am looking to set up a new motor and would like to retain its stock look yet give me 400hp or close.

So has anyone got some tips on what direction I should go with intakes , injectors , ect .
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Old Sep 23, 2011 | 09:26 AM
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383

http://xtremecarzone.com.au/index.php?showtopic=386
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Old Sep 23, 2011 | 10:09 AM
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383+Heads-Injectors-Intake-cam, there are multiple combinations
and it all depends on budget $$$$ , the article rodj just linked its fabulous !
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Old Sep 23, 2011 | 10:22 AM
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150 shot of NOS on the stock motor will get you super close to your HP goal.

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Old Sep 23, 2011 | 10:26 AM
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Before you do anything at all, you'll need to satisfy two main preliminary issues:

1. Do you want to be smog legal? This will dictate the direction of your build and eliminate many intake/cam choices by default if you do maintain compliance.

2. Do you have a resource dialed in to perform the tuning? This is probably the most critical...........If it's too rich it washes out the rings, if it's too lean it breaks them. (or worse)

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Old Sep 23, 2011 | 05:55 PM
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I would be deleting any smog equipment , would even consider a carb , but would much prefer to run the injectors ..
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Old Sep 23, 2011 | 06:01 PM
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Originally Posted by engle1147
150 shot of NOS on the stock motor will get you super close to your HP goal.

Depending on the mileage, it might bring you super close to God as well
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Old Sep 23, 2011 | 09:32 PM
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Ya I dont want to have nos , i want the hp and torque available for daily driving so i feel the pull of the motor with out necessarily being at wot .. But when i do hit it i got it .
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Old Sep 23, 2011 | 09:34 PM
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Originally Posted by navy_vette
Depending on the mileage, it might bring you super close to God as well


new owner-aging chassis-big bottle =



Gets me a smile everytime I see a new Corvette owner complain about how underpowered their car is. Makes me laugh actually...Knowing that 99.9% of those that complain of underpowered engines have never come close to driving that car anywhere near its limits. Most cannot tell you where the end of 2nd or 3rd gear is.....much less OD. Needs more power though....

Ok...sure. Hp sells for around $100 per pony. $10K outta get you in the neighborhood you wanna live in.



New/Reecent owners should meet me at the Texas mile next spring and lets see if you still need another 150 hp.
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Old Sep 23, 2011 | 09:50 PM
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be our guinne pig call these guys http://api.viglink.com/api/click?for...13168282603311 pm me and tell me what you think
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Old Sep 23, 2011 | 09:53 PM
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Originally Posted by leesvet
Gets me a smile everytime I see a new Corvette owner complain about how underpowered their car is. Makes me laugh actually...Knowing that 99.9% of those that complain of underpowered engines have never come close to driving that car anywhere near its limits.
Ditto ,the "I want XXX Hp "
from newbie's
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Old Sep 24, 2011 | 12:53 AM
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Originally Posted by leesvet


new owner-aging chassis-big bottle =



Gets me a smile everytime I see a new Corvette owner complain about how underpowered their car is. Makes me laugh actually...Knowing that 99.9% of those that complain of underpowered engines have never come close to driving that car anywhere near its limits. Most cannot tell you where the end of 2nd or 3rd gear is.....much less OD. Needs more power though....

Ok...sure. Hp sells for around $100 per pony. $10K outta get you in the neighborhood you wanna live in.



New/Reecent owners should meet me at the Texas mile next spring and lets see if you still need another 150 hp.
Come on... All this talk from a new account?

Most importantly it does not take much to get use of all 230-250 hp of an earlier C4.

Pedal to the metal will get you a fun HWY ramp entrance or exit. Anyone that has driven real power is not going to be happy with the car. In fact on several occasions I have given people rides in L98's and they were shockingly disappointed with the power of the L98's.

When you say Corvette to the average person they think about top performance, so a basic 230+hp car does not sell the brand well anymore. I gave someone a ride in my vert when I first got it and they laughed, since my vette before was a lot faster and my mustangs were leagues above the vettes..

Now can the average person autoX a C4 and max out potential? Hell no, but acceleration is brief, limited, and boring.

Plain and simple they were underpowered even for the time for what ever the reasons.
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Old Sep 24, 2011 | 01:07 AM
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Originally Posted by pologreen1
Come on... All this talk from a new account?

Most importantly it does not take much to get use of all 230-250 hp of an earlier C4.

Pedal to the metal will get you a fun HWY ramp entrance or exit. Anyone that has driven real power is not going to be happy with the car. In fact on several occasions I have given people rides in L98's and they were shockingly disappointed with the power of the L98's.

When you say Corvette to the average person they think about top performance, so a basic 230+hp car does not sell the brand well anymore. I gave someone a ride in my vert when I first got it and they laughed, since my vette before was a lot faster and my mustangs were leagues above the vettes..

Now can the average person autoX a C4 and max out potential? Hell no, but acceleration is brief, limited, and boring.

Plain and simple they were underpowered even for the time for what ever the reasons.
When I bought my 87 Vert in 2007 I took a ride to Joliet, IL to see the guys up there.
I gave my friend Shane a ride in it.
He has a low 10- second 1/4 mile 1987 Buick Grand National GNX with a Huge 101 mm turbo, lots of internal engine mods, & stand alone FAST computer.
He street races it too on the Chi town streets & back roads.

Shane was impressed with the instant torque of the old MAF L98 in my 87 Vert.
How clean the car was too.
I romped on it hard & shot him well over 100 in a straight line & later on curves.
He loved it.

In his Grand National we have left 1,000 + foot Mickey Thompson Drag Radial Posi traction burnouts on suburb streets.
When we finally hooked up>>>>>>>>we were doing 130 MPH +.
Kind of power that sucks your eyeballs back into skull on acceleration.
Most people would chit their drawers & be stinken.
LOL
We call it pure fun.


Last edited by 87 vette 81 big girl; Sep 24, 2011 at 01:10 AM.
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Old Sep 24, 2011 | 01:53 AM
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Originally Posted by pologreen1
When you say Corvette to the average person they think about top performance, so a basic 230+hp car does not sell the brand well anymore.
Pity the guys who bought a '75 as a perf car

The L-48 V8 was the standard engine in the 1975–1980 Chevrolet Corvette.
The L-48 V8 Corvette engine produced 165 bhp in 1975.
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Old Sep 24, 2011 | 02:04 AM
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Originally Posted by vetteoz
Pity the guys who bought a '75 as a perf car

The L-48 V8 was the standard engine in the 1975–1980 Chevrolet Corvette.
The L-48 V8 Corvette engine produced 165 bhp in 1975.
The coolest thing about driving a C3 for me always has been the sexy high front fender wells seen from driver's seat.
Along with the sexy hood.

Makes me smile thinking about it now.

Kind like seeing a pretty women & she keeps smiling back staring at You.

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Old Sep 24, 2011 | 02:29 AM
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Originally Posted by vetteoz
Pity the guys who bought a '75 as a perf car

The L-48 V8 was the standard engine in the 1975–1980 Chevrolet Corvette.
The L-48 V8 Corvette engine produced 165 bhp in 1975.
Those were not performance cars at that time and anyone that had a "muscle car" at any point before that knew what and why they were.

Nothing more than a scandal in history to make people pay good money for inferior products, or lesser products and technology than was available.
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Old Sep 24, 2011 | 07:45 AM
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Funny how some think 99.9% cant drive 240hp . My first build as a 19yr old was a 429 SCJ. Offenhauser tunnel ram , 2 , 750 Holley's bla bla bla .. point is it was straight line power far above 400hp ..

The one guy who posted that tpi link thanks that was cool and very helpful
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Old Sep 24, 2011 | 07:48 AM
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Originally Posted by rodj
Ditto ,the "I want XXX Hp "
from newbie's


Ditto gives me a smile when people who have been here long enough to help chose to toss stones. Maybe when ya see a newbie post you should avoid it.
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Old Sep 24, 2011 | 08:21 AM
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Originally Posted by diehrd
Funny how some think 99.9% cant drive 240hp . My first build as a 19yr old was a 429 SCJ. Offenhauser tunnel ram , 2 , 750 Holley's bla bla bla .. point is it was straight line power far above 400hp ..

The one guy who posted that tpi link thanks that was cool and very helpful
Here's a link with an in depth discussion of the article posted. Determining what rpm band you want to run in and the overall purpose of the car has a lot to do with which intake you choose. If you're leaning more towards quarter mile,, it's probably best to pick an ET opposed to a HP level - Long runner cars can typically run as fast or faster with a little less HP than a short runner car if you're not going to optimize the gearing and stall speed for the short runner intake.
http://www.thirdgen.org/techboard/tp...feb-super.html
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Old Sep 24, 2011 | 10:22 AM
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Originally Posted by diehrd
Ditto gives me a smile when people who have been here long enough to help chose to toss stones. Maybe when ya see a newbie post you should avoid it.
Unless they state otherwise, you don't know if the newbie is a dreaming 16YO still in high skool or a experienced owner when they state their required Hp output .
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