LT1-LT4 Modifications 1993-97 Gen II Small Block V8

LS1 Lid + LS1 rad support + stock hood = DONE

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Old 01-02-2010, 04:59 PM
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Originally Posted by LS1 SPEED
We have seen almost 3 mph with the addition of a Chrs1313 RA kit. We seen 1.5-2 mph over a SLP kit on my fathers 01 Z/28.

if you do not use the A/C ditch it and take advantage of that lid conversion
if i had the extra $200 bones sitting around I'd be doing it. I'll have to add that to my to-do list.

And that reminds me of the best thing about this lid project. When I get the money for the CAI i just sold, ill have done the entire thing for for free. My only investment was in the lid and the fernco connectors, the rest I got from friends who had upgraded their LS1s and just had the parts sitting around in the garage.
Old 01-02-2010, 05:17 PM
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You can make a ram air set up with the AC condesor in place. It'll just be thinner at the top where it comes into the lid.
Old 01-02-2010, 06:29 PM
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i wana do this but i dont want to trim my hood
Old 01-03-2010, 12:40 AM
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Doesnt that design block the air coming in to the radiator.. I mean, im sure you'll get cold air to your intake, but what about the air going to your radiator... its like putting a plastic bag infront of your radiator... IMO
Old 01-03-2010, 12:58 AM
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nice lid setup! i have that same stb, was it a total bitch and a half to install or what?
Old 01-03-2010, 06:14 AM
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Originally Posted by Madrian22
Doesnt that design block the air coming in to the radiator.. I mean, im sure you'll get cold air to your intake, but what about the air going to your radiator... its like putting a plastic bag infront of your radiator... IMO
Not at all.. He didn't put anything in front the radiator (unless I missed something ). The filter and lid sit on top of the radiator and support (across).
Old 01-03-2010, 05:21 PM
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Originally Posted by Madrian22
Doesnt that design block the air coming in to the radiator.. I mean, im sure you'll get cold air to your intake, but what about the air going to your radiator... its like putting a plastic bag infront of your radiator... IMO
I'm assuming you are referring to the ram air. The cars seen no issues with cooling since the lower air dam still directs air through the radiator. There is a gap between the RA and Radiator just as there would be with the factory plastic shrouding. The shrouding can be made to work if you want to take the time time to trim it.

also as noted by Beaflag xxxx A/C can be kept with a smaller RA kit
Old 01-03-2010, 05:23 PM
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Originally Posted by JoeliusZ28
if i had the extra $200 bones sitting around I'd be doing it. I'll have to add that to my to-do list.

And that reminds me of the best thing about this lid project. When I get the money for the CAI i just sold, ill have done the entire thing for for free. My only investment was in the lid and the fernco connectors, the rest I got from friends who had upgraded their LS1s and just had the parts sitting around in the garage.
I hear ya! it's always nice to do mod updates with little to no costs
Old 01-03-2010, 06:37 PM
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There's a lot of options with the ram air setups. Search around and you'll find a lot of them. Another one is the Sux2bu ram air with dryer hose.
Old 01-03-2010, 06:41 PM
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Larry do you have any pics of at ram air installed on some cars. Id like to see that up close or grasp the concept of how it works? Send them to my email thanks
Old 01-03-2010, 06:50 PM
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Originally Posted by Beaflag VonRathburg
There's a lot of options with the ram air setups. Search around and you'll find a lot of them. Another one is the Sux2bu ram air with dryer hose.
yes that has been known to be another good option

Originally Posted by robsquikz28
Larry do you have any pics of at ram air installed on some cars. Id like to see that up close or grasp the concept of how it works? Send them to my email thanks
Rob look here

http://www.speedinc.com/cont.cfm?cid=C0000984

The link has pics on and off car.
Old 01-03-2010, 07:20 PM
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I am wondering how much different the design will have to be to fit a lid mounted in the core support instead of the standard position like all the LS1 guys run.

i am really thinking about deleting my AC now.
Old 01-03-2010, 07:26 PM
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I will post pics on my car, but it will be awhile before I can get onto this project.
Old 01-03-2010, 07:31 PM
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Originally Posted by LS1 SPEED
I will post pics on my car, but it will be awhile before I can get onto this project.
ill be looking forward to that!
Old 01-03-2010, 07:46 PM
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Larry, very nice and very cool.. thanks for the pics.
Old 01-03-2010, 07:57 PM
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no problem
Old 01-03-2010, 11:32 PM
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Originally Posted by JoeliusZ28
I am wondering how much different the design will have to be to fit a lid mounted in the core support instead of the standard position like all the LS1 guys run.

i am really thinking about deleting my AC now.
we will have to tweak the design some i am sure, but i am confident it will be just as nice, and give the exact same gains for the LT1 crowd...

cant wait to dig into your car and make this work Larry...(LS1 SPEED)

As for the cooling comment, i designed the ram air to be about a 1/2 inch off of the bottom radiator support so air can actually hit the back side of the unit and be forced into the radiator...after having the condensor out of the way with the ac gone the car says at 180* all day long...so i dont even think that gap is needed...it is getting plently of air considering i even removed the black radiator deflector off the bottom of the car to see if it would help with aerodynamics and still never put it back on a year later and still have the same temps...

OP very nice build, and write up...
Old 01-04-2010, 05:12 AM
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Originally Posted by chrs1313
we will have to tweak the design some i am sure, but i am confident it will be just as nice, and give the exact same gains for the LT1 crowd...

cant wait to dig into your car and make this work Larry...(LS1 SPEED)

As for the cooling comment, i designed the ram air to be about a 1/2 inch off of the bottom radiator support so air can actually hit the back side of the unit and be forced into the radiator...after having the condensor out of the way with the ac gone the car says at 180* all day long...so i dont even think that gap is needed...it is getting plently of air considering i even removed the black radiator deflector off the bottom of the car to see if it would help with aerodynamics and still never put it back on a year later and still have the same temps...

OP very nice build, and write up...
thank you!

and awesome, will you guys be producing these kits after making a prototype? if by chance you need another car to test fit you can send one my way

I might try to come up with something on my own later this spring but im gonna need a lot of to crawl under the car 200 times sizing that up... we'll see. One way or another im gonna make it happen.

and are you saying you have the air dam removed? Im assuming that must be on an LS1 because LT1s will get pretty toasty without them, its normal for our cars to warm up after just a minute or two in traffic. If i have to delete AC to get enough air through the radiator I wont be hesitating

Last edited by JoeliusZ28; 01-04-2010 at 05:25 AM.
Old 01-04-2010, 11:20 AM
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good job looks clean
Old 01-04-2010, 11:45 AM
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My biggest fear is that trimming that notch into the radiator support (the metal one) will hurt the strength of the front end.

Where's a good place to find one of the plastic covers?

Last edited by Vicious95Z28; 01-04-2010 at 11:55 AM.


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