Corvette Forum : DigitalCorvettes.com Corvette Forums banner

1 - 7 of 7 Posts

·
Registered
Joined
·
3,027 Posts
Discussion Starter #1
grumpyvette,

I'd like to start planning my future mods to my Vette and would like your input.

To start off, my motor is 100% stock with 95,000 miles, runs great and strong. The 700R-4 has been rebuilt with minor performance enhancements with a Yank 3500 stall converter. I had the Dana 33 replaced with a Dana 44 w/3.54 gears. I have long tube headers, no cats and a Corsa exhaust.

I did a dyno run with just the Corsa exhaust and I had 266 RWHP.

I'd like to see 400 RWHP and reliable mid-high 11 sec time slips. My Vette sees the track 5-6 times a year. As the car sits, I'm in the very low 13's with a rev limiter issue. The best info I have gotten is my trans needs to be recalibrated, I just haven't had the nerve to start playing with the governer weights and springs.

I'm also debating about the converter and going with a lower stall speed. I was originally going the supercharger route and sold my set-up before it was fully installed. My top end is hurt with the 3500 converter.

What I'm thinking is a heads and cam swap. My Vette is a daily driver and I want to keep it as streetable as possible. I'm looking for all around performance, especially on the highway, when no one is around.

So, what do you think would be a good set-up for me. Also, do you have a shop? I maybe staying in Key West longer then I originally planned (a few years) and would prefer an experienced mechanic to do the work.
 

·
Super Moderator
Joined
·
8,488 Posts
IM currently recovering from ankle reconstructive surgery so I can,t even walk for the next few months , so altho Id love to personally help, thats not going to happen.

the main problem, most guys have is a limited budget or just buying random parts without thinking the mods thru carefully,now Im assuming you still have the orriginal LT1 in the car ,am I correct?
and Im further assuming you don,t have the place or tools and experiance to do all the work yourself????

and yes that 3500rpm stall could be hurting you slightly, especially if its a non-lockup converter. a 2800rpm would be my choice, a cam like the crane,

http://dab7.cranecams.com/SpecCard/DisplayCatalogCard.asp?PN=104241&B1=Display+Card

would be a good upgrade, and if your feeling adventurous,...

http://www.corvette.racenet.net/nitrous.php

http://www.sdpc2000.com/cart.asp?action=prod_detail&catid=2595&pid=92513


just the cam upgrade plus the nitrous system should get you where you want to be, (deep in the low 11s or high 10s) if your looking for more a 383 or 396 stroker kit might be a good idea

http://www.strokerkits.com/383_lt1_stroker_kits.htm

http://www.supersportperformance.com/LT1RotatingAssembly.htm
 

·
Registered
Joined
·
3,027 Posts
Discussion Starter #3
Yes, the motor is still in the car and I lack the experience/confidence to do a cam swap myself. I'm worried more about adjusting the rockers then anything else, I have never done it and wouldn't want to screw anything up.

If things work out to the tune of me staying in Key West, I probably wouldn't be doing any mods until late next summer. I would have a nicer budget to work with then. I have to see what my girl thinks of Key West before I say yes to an extension.

I do have a NX kit at home but, I'm still have to get a few replacement parts... a former business partner decided he wanted to keep the lines and nozzle for himself. It hasn't been a priority of mine.

What I would like to see is mid 11's on the motor. That's why I'm leaning towards the heads/cam route. Any suggestions on a potent combo? What to you think about the Edelbrock heads you posted about? Think they will live up to their claims?
 

·
Registered
Joined
·
7 Posts
Hey BubbleHead, mind if i ask where you found long tubes for a 93 LT1? I'll be out of town for a while, but thanks in advance!

Cheers,
Gabe :cheers:
 

·
Super Moderator
Joined
·
8,488 Posts
this is from a differant thread but it fits here also!

Stock Corvette LT1 vs. Edelbrock Equipped


Get 73.1 more hp and 36 ft./lbs. more torque with matched Edelbrock LT1 heads and cams!
Edelbrock’s Performer LT1 Heads, #61909, are designed for the 1992-97 LT1 engines. These aluminum heads have specially designed 170cc intake and 60cc exhaust ports with increased valve sizes (1.94" intake, 1.55" exhaust) for maximum flow and performance. Combustion chamber volume is 54cc. Performer LT1 heads work with stock or aftermarket self-guiding roller rocker arms. To match the Performer LT1 Heads, the all-new Edelbrock Performer LT1 Camshaft, #2108, is designed for 1992-97 LT1 applications. Since all Edelbrock camshafts are designed for optimum power from the low-end to the mid-range, you can expect a major improvement in throttle response and torque with good idle characteristics for smooth street performance. These billet steel cams have an Everwear-Gear™ iron gear that is compatible with stock oil pump drive gears to eliminate wear problems common with some other cams. It has a duration of 218° at .050", with a lift of .525" at the valve. The lobe separation and intake centerline are both 112°. On the dyno, the head/cam matched duo out-performed the stock Corvette LT1 by 73.1 hp and 36 ft./lbs. torque, as well as raising the peak power level by 500 rpm! So, if you want to maximize horsepower and torque from your LT1, get Edelbrock Performer heads and camshaft today!
For more information or questions, contact [email protected] or call our toll free tech line at (800) 416-8628.



KEEP IN MIND the EDELBROCK LT1 heads are intended for the street performance upgrade!

AFR ALSO SELLS LT4/LT1 cylinder heads and the LARGER ports will work better on a race engine,

these heads are even better if your racing but would be to large for the street
BTW HERES THE HEADS ID BUY IF I WAS BUILDING A LT1
these heads should produce even better max power and flow a good deal more air

http://www.jdsperformance.com/index.asp?initemuid=326&fcmd=item&inmake=all

http://www.jdsperformance.com/index.asp?initemuid=325&fcmd=item&inmake=all
 

·
Registered
Joined
·
3,027 Posts
Discussion Starter #6

·
Registered
Joined
·
3,027 Posts
Discussion Starter #7
ihopesheruns said:
Hey BubbleHead, mind if i ask where you found long tubes for a 93 LT1? I'll be out of town for a while, but thanks in advance!

Cheers,
Gabe :cheers:
Gabe,

I'm using Hooker headers designed for the L-98 Corvettes. I don't have the part number available but, they should be easy to find.
 
1 - 7 of 7 Posts
Top