i know on the old irocs the hood indents for the the two scoops but what about on the 91 92 z28's i want them on my car can i just drill holes in my hood and screw them on are is that hood indented to

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92 25th annv. camaro
midnight black
stock 305 tbi
t-tops

89 camaro
carburated 305
bored .030 over
flat top pistons
bigger valves
heads and block shaved
spoiler
tinted windowshuge white chevy symbol on back
92 stock rims
92 ground effects
www.geocities.com/thirdgenerationcamaro

 

If I understand you correctly... I believe that the IROC hood louvers and the 91/92 hood blisters are swappable; the hoods should be identical.

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1986 Camaro IROC-Z
Code 23 Paint ("IROC Blue")
305 TPI
B&M Megashifter
Grant GT Steering Wheel
New A/C Motor!

View my website, a work-in-progress

 

The hoods are identical. I installed '91 blisters on my '87 hood.

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Willie

Supercharged 1987 305 IROC-Z, Daily-Driver, Emissions-Legal.
Former Paxton (6-psig) with 50-hp nitrous: 12.043 @ 112.86 mph.
ATI D1SC (10-psig): 12.056 @ 116.62 mph.
All stats are altitude corrected for 3,100 feet using NHRA's Altitude Correction Table.

http://willie.camaro-firebird.org/

1987 "20th Anniversary Commemorative Edition" Z28 Convertible -- Super Chevy Show Class Winner, 1998.

 

no, you cant just screw them down on to an rs hood which is what i think you are thinking about doing. the 91-92 hoods indent as well as the iroc hoods. they're the same hoods with just differnt types of blisters/louvers.

 

There is defeniately an indent under the blisters ... but is the indent required? - I don't know.

 

Think of it from Chevy's point of view. They want hood blisters on the 1991 Z28. To cut costs, the cheapest way to do this was to design the blisters around an already existing Z28 hood with intents. That's why the hood for 1991 - 92 Z28's are the same as the previous year's Z28/IROC-Z's.

Willie

 

Willie - I understand (understood) what you are saying. The question is (or was brought up) - Can you install the blisters on a regular RS hood that doesn't have the indents? I can't remember what the bottom of my blisters look like and conclude whether or not the indent is actually required for a proper fit or if the indents are just there (for the reasons you mentioned).

 

you need the indents.

 

Where can i get the blisters? I want them for my hood.

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1987 Camaro Sport Coupe 305 V8 LG4-rebuilt-All Stock.

 

Classic Industries or the GM dealer have them.

#12505477 for the left side
#12505476 for the right side

It think they go for about $160 each.

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1989 IROC-Z 5.7L
NOS 5151 150HP kit
ProBuilt 700R4, PI Vigilante 2800 stall lockup
Baer Brakes 12" Sport System

 

The bottom of the blisters are flat while the hood is curved,so no they wouldn't fit.

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Red 1991 Z/28 350TPI
1973 Camaro(project car)
John Soule' member of the GULFSOUTH FIREBIRD/CAMARO CLUB (NEW ORLEANS) and WORLDWIDE CAMARO ASSOCIATION

 

I bought a pair of these hood blisters, and my body work guy said it was possible to put them onto my RS hood. The blister are not straight, they curve just as the hood does. Just a few thoughts.

Mark

 

http://www.eastcoastcustoms.com/cat/Hood_Sco.htm

if you're looking for something for a flat hood, these ought to be pretty easy to adapt (HS 120 or 121), and they are a lot cheaper than trying to find a set of louvers.

NOTE: these are not the same size as stock blisters, and will not work in an indented hood to the best of my knowledge.

or, if you don't want to deal with the drilling and fabbing, pick up an iroc hood. They're out there for $100 - $150, and a set of the stock blisters, which are usually $125 - $175.

I got my blisters for $80, but they needed some fiberglass work.