ZZ6 Air Filter/Hood Issue
#1
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Car: '91 RS
Engine: ZZ6
Transmission: T56
Axle/Gears: Stock 2.73
ZZ6 Air Filter/Hood Issue
I just had a ZZ6 installed and the air filter assembly sits too high to allow the hood to close. Anyone else do this? Other than buying a different hood, how'd you fix it?
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Car: 84 TA orig. 305 LG4 "H" E4ME
Engine: 334 SBC - stroked 305 M4ME Q-Jet
Transmission: upgraded 700R4 3200 stall
Axle/Gears: 10bolt 4.10 Posi w Lakewood TA Bars
Re: ZZ6 Air Filter/Hood Issue
What are you using for the air filter?
Pictures help.
Pictures help.
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Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: ZZ6 Air Filter/Hood Issue
Drop base aircleaner
#4
Re: ZZ6 Air Filter/Hood Issue
The ZZ6 comes with a high rise single plane intake. If the drop base air cleaner doesn't fit, you're looking at changing the intake manifold or the hood. Measure from the top of the carb to the bottom of the hood to see how much room you have to work with.
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Car: '91 RS
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Re: ZZ6 Air Filter/Hood Issue
Car is still at the shop and I haven't taken pics since the install was complete.
#6
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#7
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Car: '91 RS
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Re: ZZ6 Air Filter/Hood Issue
Thanks! I'm hoping the drop base air cleaner works. Not looking to buy a new hood...yet.
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#8
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Re: ZZ6 Air Filter/Hood Issue
A drop base cleaner will not give you enough space. Your only options are to swap intakes(and lose power) or swap hoods. I have a fastburn 385 (zz4 with aluminum heads) with the same intake and the only way it fit was with a 2" cowl induction hood.
#10
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Re: ZZ6 Air Filter/Hood Issue
I'd already ordered the drop base cleaner before I read your message. I'm glad it was only $20...who'd you go with for your hood?
#11
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Car: 1984 firebird se
Engine: 305
Transmission: 700r4
Axle/Gears: 373
Re: ZZ6 Air Filter/Hood Issue
Rob, I have the equivalent of a ZZ6 in an 84 bird. I used a drop base, 2” element with a top element that is fiber. Use a piece of aluminum foil to make a tower - slowly close the hood and verify the room you have based on how the aluminum is crushed. My motor made 404 hp, 424 tq. 342 hp to rear wheels. The motor was built on the same basis as the zz6. I also made a strut tower brace that was close on hood clearance - but it works. Good luck - I can send you a picture of the setup if you think you can use it. Byron
#12
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Car: 84 TA orig. 305 LG4 "H" E4ME
Engine: 334 SBC - stroked 305 M4ME Q-Jet
Transmission: upgraded 700R4 3200 stall
Axle/Gears: 10bolt 4.10 Posi w Lakewood TA Bars
Re: ZZ6 Air Filter/Hood Issue
I was going to try to make the 305HO dual snorkel air cleaner work with the QA1 3 point strut tower brace, but I'm abandoning that plan and just going to use an open element air cleaner instead. With my ram air hood, I should be able to use an oversized (taller) filter. I might even be able to isolate the air cleaner from the hot underhood air.
Last edited by NoEmissions84TA; 01-25-2018 at 09:57 PM.
#13
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Car: '91 RS
Engine: ZZ6
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Axle/Gears: Stock 2.73
Re: ZZ6 Air Filter/Hood Issue
Rob, I have the equivalent of a ZZ6 in an 84 bird. I used a drop base, 2” element with a top element that is fiber. Use a piece of aluminum foil to make a tower - slowly close the hood and verify the room you have based on how the aluminum is crushed. My motor made 404 hp, 424 tq. 342 hp to rear wheels. The motor was built on the same basis as the zz6. I also made a strut tower brace that was close on hood clearance - but it works. Good luck - I can send you a picture of the setup if you think you can use it. Byron
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Car: '91 RS
Engine: ZZ6
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Axle/Gears: Stock 2.73
Re: ZZ6 Air Filter/Hood Issue
Thanks! Just ordered a 2" fiberglass cowl hood from Unlimited Products. Since I had to buy another hood (because I didn't feel like cutting my steel hood) I felt like going lighter.
#16
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Car: 1984 firebird se
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Re: ZZ6 Air Filter/Hood Issue
No emissions... tried to add pictures, for some reason I cannot. pm me your email address and I will send pics of motor and hood. thx byron
#17
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Car: 1984 firebird se
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Transmission: 700r4
Axle/Gears: 373
Re: ZZ6 Air Filter/Hood Issue
No emissions - here are the pictures of my 84 SE. The motor is identical to a ZZ6 - I was not aware of the ZZ6 until after this motor was built and delivered. Made 404 hp, 424 tq. The Strut brace is homemade - 1" pipe. If I recall correctly, there were 13 different angles. I used a flat hood as I did not want to distort the "Bird". The hood/fenders required a bit of adjusting, however, the hood fits well. byron
#18
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Car: '91 RS
Engine: ZZ6
Transmission: T56
Axle/Gears: Stock 2.73
Re: ZZ6 Air Filter/Hood Issue
No emissions - here are the pictures of my 84 SE. The motor is identical to a ZZ6 - I was not aware of the ZZ6 until after this motor was built and delivered. Made 404 hp, 424 tq. The Strut brace is homemade - 1" pipe. If I recall correctly, there were 13 different angles. I used a flat hood as I did not want to distort the "Bird". The hood/fenders required a bit of adjusting, however, the hood fits well. byron
Looks great Byron. I bought the cowl hood and should have it within a few weeks. I wanted to stay with a flat hood, but I wanted to use the ZZ6 filter and top more. Definitely would've been cheaper with your set up.
I like the fabricated strut brace. I'll be looking into one in the near future. Rob
#19
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Car: 84 TA orig. 305 LG4 "H" E4ME
Engine: 334 SBC - stroked 305 M4ME Q-Jet
Transmission: upgraded 700R4 3200 stall
Axle/Gears: 10bolt 4.10 Posi w Lakewood TA Bars
Re: ZZ6 Air Filter/Hood Issue
Thanks for the pics. Very nice. I love the STB. Have you ever tried to see if the factory dual snorkel air cleaner would work with it?
#20
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Car: 1984 firebird se
Engine: 305
Transmission: 700r4
Axle/Gears: 373
Re: ZZ6 Air Filter/Hood Issue
NoEmissions - have not tried dual snorkel. This car should have been crushed, however, now that it is done I am well pleased. Drives, runs very well. Thanks for the comments. Byron
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