They are the same price but the TPIS looks more durable and the Holley looks like it will make smoother air flow...Which one>???

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1987 Firebird Formula 350[*]Stock except...[*]Cragar Street Stars
My Car Website w/ Pics
fyrebird350@hotmail.com
AIM/AOL: FIREBERD350
<<<<---THIS CAR IS FOR SALE(only 49k)--->>>>

 

I think they're all the same Get the cheaper one... SLP

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92 Z28 L98 350
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Ported stock heads, XR270HR-10 cam, TES headers, Crane AFPR, Flowmaster catback, MSD ignition components.

Best ET 12.9@107 mph

"Take that auto, drop it in first, hold the brakes, stomp the gas and grin from ear to ear! :-)
http://www.truspeed.org/Members/Chev...dmondIndre.htm

 

Agreed

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92 Formula
305 TPI 5speed
1LE package
Mods: SLP headers,SLP catback,SLP air foil,ported plenum,K&N, Crane AFPR (47psi),MSD6AL, MSD wires, AC DELCO cap/rotor/plugs, Bosch O2sensor, 3:73s,JET fan switch, Macewen white face gauges, Intellitronix Digital Gauges

 

I got mine from JET, it was only $48.

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1987 Chevy Camaro IROC-Z
L98 TPI 350 (5.7L)
TH 700R-4 Transmission with 2.77:1 Rear End

Current Mods: Edelbrock TES 1 5/8" Headers, Hooker 3" Aerochamber Cat-Back System, Performance Resource Chip with 160* Thermostat, Accel Ignition Coil, Cap, Rotor, 8.8mm Wires, K&N Filters, JET TPI Air Foil, All Free Mods, Falken ZIEX Z-Rated Tires.

Best ET : 14.32 @ 97.7mph
(corrected for elevation)

Soon to come: LT4 HOT Cam, Air Flow Research 190cc Heads, 2800 RPM Stall Converter and SLP 3.70 Rear End Gears.

 

I dont know if either of those is plastic, but I dont like the plastic ones for some reason, they look cheap or something

 

Where can I find the SLP or Jet ones?

 

Goto www.slponline.com its only 26.95 right know I just ordered mine.

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87 Z28 305 TPI, Auto, 2.73, Gutted air boxes, K & N fillters, Dyno Max 3" cat back, Accel 8.8 mm spirals, Accel cap and rotor, Accel coil, rapid fires, and 160 Stat.
Best 15.414 @ 87.47

 

87,

You might as well spend as little as possible. My hand-hewn aluminum model makes zero net repeatable power gain.

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Later,
Vader
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"No matter how hard you try you can't stop us now"
Adobe Acrobat Reader 4.0

 

I used the Holley precisely because it is plastic...I figured the less hot aluminum to transfer heat to the incoming air the better. By itself I don't know that they are worth that much ET, but along with porting the plenum, improving flow in the airbox, etc. every little bit will add up.