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

My list of Mods being done in a couple of weeks, but am I missing something ?

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Old 05-27-2007, 01:26 AM
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Ruff Rider
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Default My list of Mods being done in a couple of weeks, but am I missing something ?

OK Vetters, I finally committed in a Big way to modding my Ride.
The following is a list of parts on order, after reviewing the list--
1. Please tell me what I'm missing.
2. Which Injectors should I get ?

12480002......Lt4 Hot cam kit
12371042......Roller lifter Kit
12371041......Push Rods (16 total)
12524653......Manifold Gasket
10046809......Valve Cover Gasket
10128316......Crankshaft Seal
10128293......Engine front cover Seal
16214681.......LT4 Knock Sensor Module
1104032........GM LT1 Optispark
clo-9-3145.....Cloyes True Double roller Timing Chain
....................160 Degree Thermostat
....................Taylor Spiro-Pro 8mm Wire Set
50-TR55-IX....NGK TR55-IX Iridium Spark Plugs
89-WP118-HD.Meziere electric HD water Pump
A90A.............Dewitt's Radiator
VB&P.............Front & Rear Polly Conversion Kit
VB&P.............Lowering Kit
Exotic Muscle..DANA 44 Conversion Kit
Precision Motive. DANA 44 3.73 Gears
Corsa Cat-Back with custom X-Pipe.
Custom Tune
Freshen up the Heads (I have no info on this yet)

I'll have all the work done in a few weeks @ Precision Motive, except for the Custom Tune.
The tune will be done by a guy the Pat Hendrix (owner of Precision Motive) recommends....

So what else do I need ???
Injectors.? No...
Larger Throttle body ? No...

I'm all thank you all in advance and for ALL OF YOU that helped me to this point.........

Last edited by Ruff Rider; 06-10-2007 at 04:21 PM. Reason: up-date list...
Old 05-27-2007, 01:43 AM
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Dr. Evil
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oil pan gasket
water pump drive gasket


No need for a larger throttle body at this level, its a waste of time.
Stock injectors should be fine for this level of HP but you can allways check with your tuner. If you dont have one give the guys at pcmforless a call.
Old 05-27-2007, 01:46 AM
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Ruff Rider
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Originally Posted by Dr. Evil
Stock injectors should be fine for this level of HP
Was thinking about 30 lb injectors ???

Last edited by Ruff Rider; 05-27-2007 at 03:22 AM.
Old 05-27-2007, 07:50 AM
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BADDUCK
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Way to much. 24# tops
Old 05-27-2007, 08:11 AM
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93 ragtop
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Everything looks fine to me. I would stick to the stock TB unless you are having troubles with it. I did back to back runs on mine and I seen no difference between the 48 vs 52. Injectors, I would stay stock for now unless again you are having an injector problem. FWIW, I am still running stock injectors and they are starting to go a little lean on top end, but I have a few more mods. Also, once you go further and need bigger injectors, I would go with the 30's. A good tuner can make them work with no problems and it leaves you room to grow. BTW that is what pcmforless recommended to me. Good luck and let us know how it works out.

Edit to add: mine are 22's (92-93) and yours are 24's (94-96) from the factory, so IMO you should be fine, but run it by your tuner to make sure.

Last edited by 93 ragtop; 05-27-2007 at 08:14 AM.
Old 05-27-2007, 08:13 AM
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LT4BUD
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[QUOTE=Ruff Rider;1560414039]Larger Throttle body ?
QUOTE]

I would do 58mm and be sure to open up the intake manifold...

Are you staying with stock heads???? Porting would be good....

I would definitely try to do long tube headers and hi-flow cats..

If only $$$$ were no object we could do it all...

Old 05-27-2007, 08:24 AM
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mseven
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This is what I would add to the costs "while you are in there", all hoses, poly bushings, gasket sets, o rings (pn's= felpro ?), etc.etc.
I didn't see mention of valve springs, retainers and or heads being at least freshened up (guides seals etc.).
You could always swap injectors later, (or 24 fms) your intake makes it an easy job. Getting it "tuned" would be a good idea as well as adding 1.6 rockers to the list.
Old 05-27-2007, 08:31 AM
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aboatguy
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I notice you're located in the PRK so headers and high flow cats are out.


Have you thought about porting the heads? With stock heads you need to upgrade your valve springs. With a hotcam I wouldn't sweat the TB, or injectors. If you have the $$$$$ now's a good time for a mild stall IE 2800 VIG, YANK or Fuddle.
****I would budget for a good tune to ensure passing the smog check.****
MIke

Last edited by aboatguy; 05-27-2007 at 08:34 AM.
Old 05-27-2007, 12:34 PM
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Originally Posted by mseven
This is what I would add to the costs "while you are in there", all hoses, poly bushings, gasket sets, o rings (pn's= felpro ?), etc.etc.
I didn't see mention of valve springs, retainers and or heads being at least freshened up (guides seals etc.).
You could always swap injectors later, (or 24 fms) your intake makes it an easy job. Getting it "tuned" would be a good idea as well as adding 1.6 rockers to the list.
Front & Rear Poly Conversion Kit is in the list, along with some of the main gaskets, I didn't think about O-rings...

Valve Springs & 1.6 Roller Rockers etc etc are included in the Hot Cam Kit.

I know the list is not final just yet, still needs a little fine tuning, but all the parts on the list are paid for.....

I don't have the info on freshening up the headsyet, will be talking with Pat @ Precision Motive this next week.

The tune will be a Custom Tune, not a wide open throttle tune like those mail order tunes...................

Last edited by Ruff Rider; 05-28-2007 at 01:10 PM.
Old 05-27-2007, 12:41 PM
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Originally Posted by aboatguy
I notice you're located in the PRK so headers and high flow cats are out.


Have you thought about porting the heads? With stock heads you need to upgrade your valve springs. With a hotcam I wouldn't sweat the TB, or injectors. If you have the $$$$$ now's a good time for a mild stall IE 2800 VIG, YANK or Fuddle.
****I would budget for a good tune to ensure passing the smog check.****
MIke
I was wondering about the stall, but is it truly necessary.
1. What are the downside of not going with a 2800 stall converter
2. what is the benefit of going with one....

Yes on the Tune, i just didn't add it. it will be a custom tune, about $500.00

I learned the Hard-Way about Long Tube headers...
So I'm still wondering if Shorty's would be worth it ?

...............

Last edited by Ruff Rider; 05-28-2007 at 01:32 AM. Reason: added questions...
Old 05-27-2007, 01:22 PM
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Originally Posted by Ruff Rider
I was wondering about the stall, do you have a part number and or a distributor....

Yes on the Tune, i just didn't add it. it will be a custom tune, about $500.00

I learned the Hard-Way about Long Tube headers...
So I'm still wondering if Shorty's would be worth it ?

...............
I can hook you up with a nice converter if you need one. Hand built to your combo.
Old 05-27-2007, 01:22 PM
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some $4.00 a gal. gas
Old 05-27-2007, 01:49 PM
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Originally Posted by Pete K
I can hook you up with a nice converter if you need one. Hand built to your combo.
PM me with details Bro.....
Old 05-27-2007, 01:50 PM
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Originally Posted by Ruff Rider
PM me with details Bro.....
Will do
Old 05-27-2007, 02:03 PM
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5abivt
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The mod that will give you the most gains and power you are iffy about.

It's all about the heads.
Old 05-27-2007, 02:09 PM
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Originally Posted by Pryderei
The mod that will give you the most gains and power you are iffy about.

It's all about the heads.
I'm not iffy about it, I just have not worked out the details yet with Precision Motive...........
Old 05-28-2007, 01:16 PM
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Default 2800 Stall Converter

I'm hoping more people will give there feed-back concerning if adding a 2800 Stall Converter is necessary or not.........

I will be talking to Pat @ Precision Motive soon about it but would like to hear from all of you first........

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Old 05-28-2007, 10:51 PM
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BlackC6LS3
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Originally Posted by Ruff Rider
I'm hoping more people will give there feed-back concerning if adding a 2800 Stall Converter is necessary or not.........
Necessary, no. Helps, yes.

Stock I went 14.0's. Heads and cam put me at 12.70's. Converter and gears put me at 11.90's. Nothing is necessary, but each thing helps and some things complement each other quite well.
Old 05-29-2007, 10:03 AM
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Old 05-29-2007, 07:03 PM
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93 ragtop
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Originally Posted by Ruff Rider
I'm hoping more people will give there feed-back concerning if adding a 2800 Stall Converter is necessary or not.........

I will be talking to Pat @ Precision Motive soon about it but would like to hear from all of you first........

We used to have a member here (Nathan) who has a lot of documented info on the hotcam, etc. and how the different mods dynoed. If I remember correctly, the hotcam did not loose any low end torque. So technicially the gears and converter are not necessary, however as Blackrose said, its going to get the engine in the powerband where it will take most advantage of the hotcam. BTW this is just my opinion, but the L98 is a lot better suited to a 2.59-3.07 gear and a 1400 converter then the LT1 is in the stock condition. Even with a stock LT1 motor, its easy to get into the 12's with a gear and converter change. The LT1 has a higher redline and can take advantage of the gears and converter change. With the hotcam its even more so due to the higher rpm range.
Oh, and I know you didnt ask this but IMO the first thing to mod on a LT1 is gears and converter. Then move on to the motor.


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