81 350
Race Director
Joined: Jun 2001
Posts: 16,483
Likes: 1
From: The Only Corvette in Gila Bend, Az.
St. Jude Donor '09
Originally Posted by page62
Is it 8.2:1, or 8.5:1. Somewhere in there.
Both engines (81/82) have 1.94/1.50 valves.
Both engines (81/82) have 1.94/1.50 valves.
But the 82 had a compression ratio of 9.0:1
Safety Car
Joined: May 2001
Posts: 3,758
Likes: 3
From: Surrey
As far as I know, my L81 is at the giddy heights of 8.2:1 CR (which is why I have to use special expensive fuel 
).
Any improvement is worth doing, but the problem is whether you think that the slight improvement is worth the time you spend on it eg. many people would consider me fitting a better cam with the stock heads & pistons a waste of time as the full potential can't be realised. For the time it took me to change it I'm not convinced that it was worth doing, but now it's all done (& the bills paid) the improvement is nice to have. I hope that makes sense!
).
Originally Posted by MEGLADON
would it be worth it to do a gasket port match???
or is it a waste of time, going to use a weiand stealth manifold
and a 675 cfm carb.
or is it a waste of time, going to use a weiand stealth manifold
and a 675 cfm carb.
Pro
Joined: Aug 2002
Posts: 560
Likes: 0
From: The Valley of The Sun AZ
All 81's are 8.2:1
If you go to a 675CFM carb you will be stepping down from the stock E4ME which is rated at 795CFM(with secondaries full open). Of course, you don't need the full 795CFM with the L81 anyway unless you make some serious changes. I am just assuming you are wanting to get away from the computer controlled carb.
If you go to a 675CFM carb you will be stepping down from the stock E4ME which is rated at 795CFM(with secondaries full open). Of course, you don't need the full 795CFM with the L81 anyway unless you make some serious changes. I am just assuming you are wanting to get away from the computer controlled carb.
Race Director
Joined: Sep 2002
Posts: 10,362
Likes: 5
From: San Diego - Deep Within The State of CONFUSION!
Originally Posted by page62
Is it 8.2:1, or 8.5:1. Somewhere in there.
Both engines (81/82) have 1.94/1.50 valves.
Both engines (81/82) have 1.94/1.50 valves.
As for the CR it is on your shifter plate, isn't it?
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Thread Starter
Safety Car
Joined: Apr 2004
Posts: 3,997
Likes: 1
From: WAY DEEP INSIDE AMERICO,YES YOU LIVE HERE TO!! TX
Originally Posted by tersian
I am just assuming you are wanting to get away from the computer controlled carb.
I'm putting a better intake and bigger cam, with the stock heads,
I have a stock lower end with flat tops, I going to move up one step
from the performer plus kit
Race Director
Joined: Jul 2004
Posts: 12,706
Likes: 329
From: Scottsdale Arizona
Originally Posted by tersian
That's a pretty interesting upper radiator hose there MEGLADON 
May bubba smile upon you! 
I do like the serpentine belt though. i can't help but notice that the belt seems to have missed the smog pump. Probably just as well with the missing pully.
Drifting
Joined: Jul 2000
Posts: 1,266
Likes: 0
From: Allen, TX, USA
That serpentine belt does look nice, but what happened with the
water pump?
Were they painted from the factory? Mine was blue...
Hey, no radiator, no hood, heck - pull the engine. While you're at it
will make everything worth it...
water pump?
Were they painted from the factory? Mine was blue...
Hey, no radiator, no hood, heck - pull the engine. While you're at it
will make everything worth it...
Race Director
Joined: Jul 2004
Posts: 12,706
Likes: 329
From: Scottsdale Arizona
Originally Posted by adam
but what happened with the water pump?
Were they painted from the factory? Mine was blue...
Thread Starter
Safety Car
Joined: Apr 2004
Posts: 3,997
Likes: 1
From: WAY DEEP INSIDE AMERICO,YES YOU LIVE HERE TO!! TX
Everything here in the engine bay was just a mock up to make
sure eveything was going to work. Including the serp, setup.
If you look close there is no shocks, no gear box, and many other little things,
I have a clean setup now. the serpintine system worked fine with
small mods. VERY OLD PICTURE
And there is a radiator there, with custom fan.
sure eveything was going to work. Including the serp, setup.
If you look close there is no shocks, no gear box, and many other little things,
I have a clean setup now. the serpintine system worked fine with
small mods. VERY OLD PICTURE
And there is a radiator there, with custom fan.
Safety Car
Joined: Feb 2002
Posts: 4,286
Likes: 4
From: Guam
I figured that it was "work in progress" since there were so many cluttered and disconnected lines. Surely a "true corvette enthusiast" would not leave his engine compartment in that shape for the others to criticize.........
Thread Starter
Safety Car
Joined: Apr 2004
Posts: 3,997
Likes: 1
From: WAY DEEP INSIDE AMERICO,YES YOU LIVE HERE TO!! TX
Originally Posted by Old Mo
MEGLADON; what custom fan setup did you use?
My own LOL. I modified a 91 rs fan to work, and looks great, so
I did not have to spend big bucks for an aftermarket one.
. Car won't heat up for nuttin
Thread Starter
Safety Car
Joined: Apr 2004
Posts: 3,997
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From: WAY DEEP INSIDE AMERICO,YES YOU LIVE HERE TO!! TX
Originally Posted by Sharky Guam
Don't laugh too hard! I also used a cheap fan from another dismantled car here in the shop.....
and stuff like that. You can mod, these fans to work and look just
as good as others. 4th gen F-bodys have great looking dual fans.
For those not worried about getting dirty, or cutting things up,
you can mod anything to work and look just as good