Hi there, I'm new to this board. . I have a 1994 Corvette and here's I have done so far to upgrade it:
1> Replaced MAF sensor with Granatelli MAF
2> Replaced Throttle body with 52 mm
3> Replace stock air filter with Triple Take filter from SLP
4> Put new roller rockers from Comp Cams
5> Granatelli spark Plug wires
6> Programmed with Hypertech

Right now, I'm thinking of putting these:
1> Edelbrock cylinder head, ported
2> LT4 Hot Cam
3> Random Technology Catalytic converter
4> Flowmaster exhaust system or SLP Powerflo exhaust
5> LT1 Hooker/Jet Hot Ceramic Longtubes
6> New valve springs
7> New fuel injectors

Maybe later on, if I finally have the $5,000, I'll put a ATI PRO or Vortech Supercharger.
I'm still green when it comes to Corvettes, I will appreciate any input or recommendations. And also I live close to Memphis, TN area, if you know any mechanic who specializes in LT1 Vettes. Please let me know.. thanks a lot guys!!

 

Welcome!

If you don't want your old parts -- I'll take them: MAF, air box/lid & throttle body (I'll pay for the shipping)

 

You don't need to bleed RED to get a response....

 

sold the old parts on Ebay

 

Welcome Aboard.

 

Don't do any more to that car! Drive and enjoy it for now before you get to deep into your pockets for what you might already want and have........... a good Daily Driver vehicle.. just keep her tuned!

You might be satisfied with her just as she is now!
If not , start by posting how you want the car to perform. More HP, More torque, better handling, faster acceleration,etc?
many of the members will be glad to help you!

P.S. take that Hypertech programing off your ECM it actaully slows the car down... you only need it for gear changes and turnning on your
fans earlier!

if you are satisfied with the exhaust sound...leave your exhaust system alone!
the Lt1 's exhaust flow is pretty good...add Longtube headers would be a plus down the line but you,re only talking about 15hp increase unless you do heads and cam mod. So for now mufflers are just for that muscle car sound.

 

...suggestions in red...

 

What exactly can the SLP filter do that's such an improvement? I was under the impression that the stock filter is not restrictive enough to be the bottleneck point in the system. I can't imagine the power curve would change much from this?

 

if he replaced the entire intake, he should see a slight improvement...which is more than i can say for the MAF and the plug wires...

 

THANKS for your advice, where can I get LE stage 1 head cam/combo? please let me know, appreciate it!

 

www.eportworks.com

LT1-LE1
Head/cam package will pull from 2,000 to 6,200 RPM and should make *370 – 390 RWHP
with 30 lb. injectors, 52 MM T.B., 1 ¾ LT’s no cats, good tuning, etc. This will have an
idle similar to the HotCam, CC 305, etc. but will make more HP & TQ than these cams with
the same RPM range.

The LT1 LE1 heads consist of:
Stock Valves with Back Out
Crane 10308-1 dbl valve spring, retainer and lock kit
195 CC Intake Port
Milling, Cleaning, Assembly
Flow About 260/180
Ready to bolt on

LE1 Head/Cam Package - $1,200 plus shipping. $850 for Heads only.

LT1-LE2
Head/cam package will pull from 2,300 to 6,500 RPM and should make *400 - 420 RWHP with 30/36 lb. injectors, 58 MM T.B., 1 ¾ LT’s, no cats, good tuning, etc. This will have
an idle similar to the CC306 cam but will make more HP & TQ across the board. The REAL
difference is the amount TQ this cam makes in the 2,500 – 3,500 RPM range compared to
the cc306.

The LT1 LE2 heads consist of:
Ferrea 200/1.56 Valves
CM Retainers & 10° Locks
Comp Bee Hive Springs
205 CC Intake porting
Milling. Cleaning, Assembly
Flow about 275/190
Ready to bolt on

LE2 Head/Cam Package - $1,750 plus shipping. $1,400 for Heads only.

LT1-LE3
Heads & cam package will pull from 2,600–6,800 RPM and should make *410 - 430 RWHP
with 36/42 lb. injectors, 58 MM T.B. or Monoblade, GOOD tuning, etc. This will idle similar
to the GM847 but make about 10 more HP at peak and starts making HP sooner than the
GM847. Requires 4.10 gears & 3,000 (or more) stall for best results.

The LT1 LE3 heads consist of:
Larger valve seats installed in Heads
2.05/1.60 Valves
Comp Bee Hive Springs
Titanium Retainers & 10° Locks
208 CC Intake Port
Milling, Cleaning, Assembly
Flow About 280/195
cm retainers & 10 degrees locks
Bronzeliners
Ready to bolt on

LE3 Head/Cam Package - $2,050 plus shipping. $1,700 for Heads only.

note he needs your heads for a core...he ports your castings...you must send him your heads to have this done.

I spoke to him many times when i was about to have a LT1 done up. The Fbody crowd sings mounds of praise for him and he does wonders with these motors.

A few things to consider is what he suggests for supporting mods. Some of them are ok, some a little overkill, but if you follow that blueprint, you will make the stated HP...

NOTE TO OTHERS: i am not in any way affiliated with LE and blah blah blah. I'm just throwing this out there for the OP to get started. I have faith in LE but yet also realize others have used other sources for work and have had spectacular results.

I highly suggest doing a bit more research to find other companies and performance packages. Then compare to see what fits within your budget

 

THANKS A LOT! I HAVE TO SAVE MORE $$$ FOR MORE POWER

 

acevergl - At this point, I would stop throwing $$$ at your car and develop the plan because it will frustrate you in the end. Some of your mods are going back in the box if your ultimate goal is FI.

1> Replaced MAF sensor with Granatelli MAF - should have saved your money for FI upgrade
2> Replaced Throttle body with 52 mm - OK
3> Replace stock air filter with Triple Take filter from SLP - should have saved your money for FI upgrade
4> Put new roller rockers from Comp Cams - OK
5> Granatelli spark Plug wires - OK- to each his own - tune up?
6> Programmed with Hypertech - OK, but useless for the next stage of your build. You'll have to download the program to sell it so...should have saved your $$$$.

Now for what you plan to do,
1> Edelbrock cylinder head, ported - search the archives - lots of heads to choose from - take your time and read real experiences especially if your goal is ultimately Forced Induction (FI) read, read, read.
2> LT4 Hot Cam - OK, lots of cams to choose from as well
3> Random Technology Catalytic converter - OK
4> Flowmaster exhaust system or SLP Powerflo exhaust - Again, lots of systems to choose from. Go to a few shows/events and really listen to them. Be aware of the positives/negatives with every system then choose. (Insert sales plug here for the Corsa catback system )
5> LT1 Hooker/Jet Hot Ceramic Longtubes - Good
6> New valve springs - Should come on new heads
7> New fuel injectors - You may need after the FI install, you can't install them until your definately ready for the tune though-car won't run on big injectors w/o a custom tune.

IMHO, you have to develop a plan, with the items you purchased that you ultimately will be removing w/ a FI - you could have saved @ $500 - $700 in parts. If you have a money tree in your back yard, PM me so I can peel off a few bills for some mods of my own If you don't, read, read, read and then read some more - then figure out where you're headed (FI, nitrous, head/cam package, etc.) and plan your mods. It will save you some time and $$$. Don't forget about drivetrain mods (rear diff swaps, torque converter, etc.) don't know what you have because we have no info other than it's a 94.
BTW, Fill out your profile... JS

 

my only concern is with the exhaust.

The flowmaster, SLP, Magnaflow, B&B, whatever, are prone to resonate. If you don't like that boom, don't buy them. I would recommend Corsa. Yea, they are expensive, but damn they are nice.

 

Thanks for the input, actually I'm trying to stick to my current budget of 5K. I know I made a mistake of adding the SLP filter and 52 mm TB when my goal is to have forced induction.
I'm having having second thoughts about adding FI, however. It's 80,000 mile vette, I dunno if its worth it to add that.
What's your opinion about Edelbrock cylinder head( part #61909) ?. I plan to buy it and have it ported. They say I could get a lot of HP from this.
My ultimate goal really is to have 400+ HP Vette, I don't if this achievable if I add every possible mod available out there. Thanks again!

 

Bad idea, just get your stock heads ported or buy a set of the new AFR Eliminator heads.

 

How about Borla? I heard it's an excellent exhaust but expensive. The whole system is about $1200 but the muffler is just $550. So, if I already have the Hooker/Jet Hot Ceramic Longtubes, do I still need the complete exhaust system or just the mufflers? Thanks man!

 

where can I find this AFR Eliminator heads?

 

AFR Heads link for you...

Why buy heads and then pay to have them ported? You'd be better off porting your stock heads. If FI is out and you have a 5k budget, you may want to consider a budget stroker. Lots of avenues, just don't forget when you add power you'll need to look at your drivetrain as well. 400 HP is attainable... look at options that work. No need to blaze a trail of your own, it will be paved in greenbacks. JMHO

I knew someone from the Corsa Crew would chime in...j/k Resonance is a beast with some of the systems. Search for threads that discuss running L/T headers through the factory system... yet another option.

 

As some have suggested, make a plan for your power plant. Some cams don't work well with blowers. Just a word about your bottom end of the LT1 motor, I've seen many on this forum that have done "top end buildups" only to spin a bearing. It might be the increased RPM range that causes the problem. I can only think that a blower would put even more stress on that bottom end. Go with a proven combination. Many like to make a LT1 to LT4 upgrade; LT4 heads, LT4 intake and a GM Hot cam kit. There are several nice headers out there, including EM's ceramic coated long tubes or if you want to keep your OEM cats go with Jet Hot's Hooker Shorties that are ceramic coated. You might want to stay with the OEM exhaust for a while as it is a good flowing exhaust, but it is quiet. BTW, the LT4 upgrade will cost around $2500 for the parts and some supporting sponsor here on the forum offer that complete kit. You will need to update your ECM to get the most out of this upgrade. Do some homework.