Patrick G

iTrader: (14)

Had a beautiful 2002 SS come to the dyno yesterday. The car had stock 5.7 short block with no valve reliefs, an unmilled set of PRC stage 1 cnc ported 243 heads, MS4 cam, 1 3/4" headers, true duals, M6, LS6 intake, and MAFless tune.

The combo was speed density tuned by another tuner and it seemed to be in good running order when it arrived. The owner was not happy with the power it had made when it was run during a club dyno day. Judging by the solid mods, we all felt the car should be in the 440 rwhp range. Kurt Decker and I strapped the car down for a baseline run. It made 424rwhp/389rwtq. Good, but not great. When I logged the run, I noticed that the timing was good and the A/F ratio was certainly within the realm of making solid power. Something was holding it back. Something was.

Looking at his airlid assembly, the customer's SS had the optional SLP 345hp package which included the Blackwing air lid. The opening of the air lid was only about 1/2" across. Talk about a restriction. We unbolted the radiator support to raise the air lid (to give it a 1" opening). We redynoed. Power rose to 434/395 just be raising the air box! Next, we replaced the SLP Blackwing air lid with a UPD air lid. Power rose to 440/400. So with no additional tuning, the power gain was 16rwhp and torque gain was 11 rwtq. Moral of the story? Don't always blame the heads and cam when the power is not as good as it should be. Sometimes you have to look for hidden power in other areas. In this case, the air lid assembly was way too restrictive. The before and after dyno sheet is below.

2FNQUIK

iTrader: (17)

So on a stock 01 camaro SS should i get the ws6 lower air box assembly or what can I do to enlarge my opening?? and what is a UPD airlid??

Patrick G

iTrader: (14)

WS6 lower assy will not fit the SS hood. You can raise the lower assy with washers or add a Fast Toys Ram Air box under the air filter (a better idea). A UPD airlid is the highest flowing, highest powered standard size air lid that I have tested. They went out of production several years ago, but rumor has it that another company may assume the patents and bring them back into production.

Do a search for 98Aggie, I think he has some leftover new ones that he might sell.

cjh

iTrader: (4)

Thx to Patrick G and 98Aggie (Kurt) for finding that hidden power! I was very surprised by raising the lid (free mod) and UPD lid made in power. Of course I couldn't leave the shop without buying the lid on the spot!

Thanks again!

Black02SLPSS

iTrader: (5)

Very interesting. I bet that owner was much happier with the extra power that was massaged out of his combo, especially for not spending a whole lot of money to get it. Great job Patrick!

StreetStalkerZ

iTrader: (1)

It's always nice to find 16hp for $100,wish i could find that now

How does this lid compare power wise to my FastToys 85mm lid?

The Dragon

iTrader: (6)

Curious about this as well.

I am unfamiliar with this company/brand lid. Do you have a photo of the product and/or images I the differences between this lid and other common lids?

01Z0H6

iTrader: (63)

Brother, from my personal experience, you cannot beat the added HP of the FT85mm lid, Delphi 85mm MAF... ( on a modded motor).

I have had several different lid's over the years and the FT Lid has worked the best (FOR ME)..

Nice numbers to the OP...

98camaroLS1M6

iTrader: (35)

Nice results, glad you found what was holding it back.

00SS4780

iTrader: (3)

Sweet find and thanks for posting!

StreetStalkerZ

iTrader: (1)

I have had 4 different lids over the years and all them were quality products. To my knowledge the FT's lid is the best out there but im always looking for the next big thing No MAF here just a good ole speed density tune for me

'02 WS6

iTrader: (73)

We could be saying, "TSP's 100mm lid is the highest flowing".....................but...........lol

Patrick G

iTrader: (14)

This particular car had NO MAF, so from a flow standpoint, there was no MAF restriction.

GMCtrk

iTrader: (23)

so those stage 1 243s seem to work pretty well, huh? I have the stage 1 317s 68cc....I'm interested to see what I pick up on an otherwise stock internal motor for the time being.

dug

iTrader: (10)

good info

Does speed density tune add any power?

Kurtomac

iTrader: (5)

Pat whats the deal with the tq curve and the loss in power at 4000ish....i got the same bs...some seem to be a nice smooth tq curve some have this horrible dip in them....is it the cam not designed well for the cubes or what?
heres mine for reference of what im talking about in the tq curve....didnt matter if we made it fat, lean, add timing, take out timing couldnt get rid of these hills
mines a stock short 346 with TFS 61cc 215's a 236 238 601 605 113+2 comp xe xer grind with a fast 92 and all the boltons on my Z06

98Aggie

iTrader: (19)

The UPD lid is raised in the front to allow for more air and smoother air flow through the front of the filter, the back of the lid is made to channel and keep a smooth flow of air into the intake, removing the square edges reducing turbulence which will act like a restriction (seen on the MTI/SLP and Fast Toys). The Fast Toys lid tried to get around the UPD Patent by adding the power bulge to allow for more air but it did not address the turbulent flow from the back corners. Lastly the UPD clears all hoods no rubbing issues.

NumberOneSled

iTrader: (1)

Looks like the old Texas Speed air lid.

98Aggie

iTrader: (19)

Texas Speed used to sell the UPD intake several years back.

slow ride 02

So do you have any left? Can I buy one from you? PM me please.