General question: Why so quiet here?
Thread Starter
Le Mans Master
Joined: Jun 2004
Posts: 6,231
Likes: 65
From: Seattle WA
St. Jude Donor '14
General question: Why so quiet here?
With our 'Vettes all sharing common engines (GEN I, II, III, etc.) why so little activity here vs. in the individual Cx forums? Just curious 
Drifting
Joined: Jun 2001
Posts: 1,701
Likes: 458
From: Mass Mass
Only the "Hard Core" guy's seam to hang out here ...
Not enough drama for the rest ... I guess
These are some good engine sites, you might find interesting.
http://speedtalk.com/forum/
http://www.gofastnews.com/board/engine-technology/
http://www.eng-tips.com/threadcategory.cfm?lev2=6
Not enough drama for the rest ... I guess
These are some good engine sites, you might find interesting.
http://speedtalk.com/forum/
http://www.gofastnews.com/board/engine-technology/
http://www.eng-tips.com/threadcategory.cfm?lev2=6
Thread Starter
Le Mans Master
Joined: Jun 2004
Posts: 6,231
Likes: 65
From: Seattle WA
St. Jude Donor '14
Intermediate
Joined: Sep 2008
Posts: 35
Likes: 0
From: Chicago IL
I have one for you, sir.
I am buying a 75 today. Its got a bunch of mods as follows:
420 HP, Metallic Blue, T-tops, Automatic, extra clean interior • Edelbrock: Performer RPM Aluminum Cylinder Heads- 64cc, Performer RPM Camshaft/Lifters/Lube Kit, Performer RPM Manifold, Elite Series low profile valve covers and air breather, double roller timing chain and gears, polished aluminum timing chain cover • Turbo 400 transmission with shift kit • 356 rear-end • Speed Demon 750cfm double pump carburetor • Chrome water pump and alternator • Flowmaster mufflers • Mallory HEI ignition • 30 over Powerforged Pistons • Stock Crank & Rods • Numbers match and also have stock heads
Im having the hi-per cats put on (cause it doesnt have any on it now)
My question is that according to the Edelbrock intake RPM performer, it recomends not being used with emmisions equiped vehicles. Will I be ok with the Hi-perf cats?
420 HP, Metallic Blue, T-tops, Automatic, extra clean interior • Edelbrock: Performer RPM Aluminum Cylinder Heads- 64cc, Performer RPM Camshaft/Lifters/Lube Kit, Performer RPM Manifold, Elite Series low profile valve covers and air breather, double roller timing chain and gears, polished aluminum timing chain cover • Turbo 400 transmission with shift kit • 356 rear-end • Speed Demon 750cfm double pump carburetor • Chrome water pump and alternator • Flowmaster mufflers • Mallory HEI ignition • 30 over Powerforged Pistons • Stock Crank & Rods • Numbers match and also have stock heads
Im having the hi-per cats put on (cause it doesnt have any on it now)
My question is that according to the Edelbrock intake RPM performer, it recomends not being used with emmisions equiped vehicles. Will I be ok with the Hi-perf cats?
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Thread Starter
Le Mans Master
Joined: Jun 2004
Posts: 6,231
Likes: 65
From: Seattle WA
St. Jude Donor '14
Edelbrock's recommendation is based on the lack of an EGR provision for the Performer RPM. As long as you're not expecting to reconnect the EGR, this is not an issue. No issue at all with the cats.
Intermediate
Joined: Sep 2008
Posts: 35
Likes: 0
From: Chicago IL
Cool
I havent gone thru all the mods done to it yet, but the Edelbrock performer package included heads, intake, and (more) plus a demon carb. I dont think there is an EGR valve or sensor on it, (nor am I planning to use one). I just want to make it street legal, and pass emmisions. (Illinois)
Since 75 (cats introduced) the federal law prohibitted the removal of them.
I just wanted to make it legal, so it doesnt get the hook !!!
Thanks !!
Since 75 (cats introduced) the federal law prohibitted the removal of them.
I just wanted to make it legal, so it doesnt get the hook !!!
Thanks !!
Team Owner
Joined: Oct 2004
Posts: 81,241
Likes: 3,062
From: altered state
St. Jude Donor '05
Youll get some real information over there
This is a good site but there is so much misinformation repeated its not even funny.
Drifting
Joined: Aug 2007
Posts: 1,838
Likes: 13
From: Kingman AZ
Ok Billa I know your on top of things (I read your posts often) and you sound bored. This is an easy one for ya. I know I'll be using the 180 AFR's for certain. Stock L48 1976, must pass smog so it needs an EGR manifold. What is the cheapest and easiest way to get some ***** for this thing? Intake cam to match..
Oh and its a turbo 350 with 3.08's in the back. Looking for 300 to 350 hp preferably 350 of course
Oh and its a turbo 350 with 3.08's in the back. Looking for 300 to 350 hp preferably 350 of course
Last edited by rayluka; Oct 5, 2008 at 11:06 PM.
Thread Starter
Le Mans Master
Joined: Jun 2004
Posts: 6,231
Likes: 65
From: Seattle WA
St. Jude Donor '14
Ok Billa I know your on top of things (I read your posts often) and you sound bored. This is an easy one for ya. I know I'll be using the 180 AFR's for certain. Stock L48 1976, must pass smog so it needs an EGR manifold. What is the cheapest and easiest way to get some ***** for this thing? Intake cam to match..
Oh and its a turbo 350 with 3.08's in the back. Looking for 300 to 350 hp preferably 350 of course
Oh and its a turbo 350 with 3.08's in the back. Looking for 300 to 350 hp preferably 350 of course
If you're confident that the bottom end is sound, this is a relatively easy goal.
Key questions are budget and the option of installing headers - with that information, I can take a swing
Drifting
Joined: Aug 2007
Posts: 1,838
Likes: 13
From: Kingman AZ
I didnt mean that negatively. I know that this is easy stuff for you as your quite knowlegeable. I dont think headers are an option in California so I plan to do a true dual 2.5 with low restiction cats. I was told by the smog inspection that the visual inspection will only be loooking for my catalytic converter but headers are a no no. I believe the bottom end is ok as it has 61000 miles and runs good. And the budget is low but plan on doing some saving to add to the fund
Last edited by rayluka; Oct 6, 2008 at 12:47 PM.
Thread Starter
Le Mans Master
Joined: Jun 2004
Posts: 6,231
Likes: 65
From: Seattle WA
St. Jude Donor '14
No worries - I'm anything but bored Have a ball with the engine stuff, as well as auto-xing the C5 Z06!
Low budget is good. Figure the stock L48 was making maybe 200HP at the flywheel...so we need to find 100-150HP.
First, I would not invest in a set of AFRs. They're some of the very best heads out there, but honestly a good iron S/R head will do fine at this power level and with these restrictions. Since we're replacing the manifold anyway...we might as well use the best budget approach: a set of stock GMPP Vortecs. I understand, but have not validated, that the Edelbrock Performer will not fit unless a drop air cleaner is used...but that would be my pick for the intake. I'd then look at the tried-and-true CompCams XtremeEnergy 262 (12-238-2). This should get us to right around 300 flywheel HP.
Being blunt; if headers are off the table (are there no CARB-compliant headers?) I wouldn't try to shoot for more power. This general configuration is a pretty healthy bump for a really decent price. Consider spending a little extra money for a tune, and maybe a torque converter and gears.
This is pretty off-the-cuff, but it gives you an idea.
Have a ball with the engine stuff, as well as auto-xing the C5 Z06!Low budget is good. Figure the stock L48 was making maybe 200HP at the flywheel...so we need to find 100-150HP.
First, I would not invest in a set of AFRs. They're some of the very best heads out there, but honestly a good iron S/R head will do fine at this power level and with these restrictions. Since we're replacing the manifold anyway...we might as well use the best budget approach: a set of stock GMPP Vortecs. I understand, but have not validated, that the Edelbrock Performer will not fit unless a drop air cleaner is used...but that would be my pick for the intake. I'd then look at the tried-and-true CompCams XtremeEnergy 262 (12-238-2). This should get us to right around 300 flywheel HP.
Being blunt; if headers are off the table (are there no CARB-compliant headers?) I wouldn't try to shoot for more power. This general configuration is a pretty healthy bump for a really decent price. Consider spending a little extra money for a tune, and maybe a torque converter and gears.
This is pretty off-the-cuff, but it gives you an idea.
Drifting
Joined: Aug 2007
Posts: 1,838
Likes: 13
From: Kingman AZ
With using vortec heads on this motor there wont be a fit issue? Im gonna look further into the exhaust as this is a 49 federal vehicle from Colorado originally. Dont know if it matters, but there is no A.I.R pump so I dont see why I couldnt use headers. Its hard because I can never get definitive answers about smog requirements and theres no where to look it up yourself. I dont ask too many questions at the smog station . I dont want to raise any red flags. Thanks for your time.
