Im starting to do some mods on my 91 firebird and i think i'm going to go with an open element filter. I've heard that its a pretty good HP to $ ratio. I've been looking at the K&N, Edelbrok, Morrosso, Summit, and Delco. Any suggestions(and part #'s)...am i going to need a drop base filter?..and will i have to relocate the 02 sensor, and the IAT sensor inside the new element?..thanks

 

Hey man, I used a 14x2.25 because I have a 1 inch spacer. Some people use the 14x3. The PN for the 14x2.25 is #KNN-601263
The 14x3 is KNN-601280

As for the Coil, I didn't have to move mine but I did have to drill a hole in the bottom of the open element (there is a outlined hole the have engraved for u) and I put my IAC in there. So the choice is yours, if I was you, never order a TBI spacer from Jegs. Look for a Corian spacer or anything that is ONLY .5 inches high! Anything else is to high and then your open element will hit the top of your hood. But thats a whole different mod.

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Eric Natzke
91 Firebird 305 TBI (ZZ4 summer of "01")
ASCD Ram Air Hood-3" custom exaust-Flowmaster 80 Series-No Cat-Edelbrock TES Headers (coated)-March Pulleys-TBI Spacer-K&N Open ELement-TransGo Shift Kit-B&M Supercooler 28,000 GVW-Hypertech Thermomaster-160 Stat-3:42 GM Gears-Auburn Posi Unit-Edlebrock Strut Tower Brace-MSD Superconducters-Accel Cap & Rotor
-Rapidfire Plugs-265/50/R15 Tires-Emmison's all Gone

http://hometown.aol.com/J007Golden/index2.html

[This message has been edited by 91Bird305 (edited October 16, 2000).]

 

i have the GM Performance Parts/AC Delco one and i use a 14"x3" K&N...


by the way...on that pic, it on my new engine, but i used it on my LO3 trtoo and it fit like a glove.

not sure of the part nuber but i think its theonly one they got. all you gotta do is cut the cut-out out like eric said, and you're all set.

you said something about a hp:$ ratio. i donrt really think that there is much of a hp increase with the open element. BUT it sounds awesome. i would do it again ina minute jsut based on that. at most its only like 5 hp (at most!). but itlooks cool, sounds AWESOME and cleans it up under the hood a little. i would definitely reccomend that as a good first mod.

-brian

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1991 Camaro RS
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Ultra Blue Metallic, T-Tops

GM 350 HO Crate Engine - Vortec Heads, Edelbrock Performer Vortec Intake, Holley 670 CFM Throttle Body, Open Air Cleaner w/14"x3" K&N, Edelbrock TES Headers, Edelbrock Victor Series Water Pump, Accell Superstock Wires, Cap, and Rotor, MSD Blaster Coil, Hypertech Fan Switch & Thermomaster Chip, AC Delco Rapidfires, 3" Cat Back, Flowmaster 40 Series Muffler

700R4 - 2,400 Stall Converter, Vette Servo, Shift Kit, B&M Super Cooler

Brian's 1991 RS

Central NY F-Body Association

[This message has been edited by Z28 Boy (edited October 16, 2000).]

[This message has been edited by Z28 Boy (edited October 16, 2000).]