[david ahluwalia]

I,m looking for a intake to go with my vortec heads I,m going with the Comp Cam 268H like the one in the 400 hp goodwrench artcal I,ve been following.They went with a Eldelbrock Air gap.I aslo here the performer Rpm is good to and alittle less money.My firend has a Air Gap in his 82 Z28 and there is no hood clearance,he hand to buy a cowl hood.Will this be the case with the performer Rpm? I also now have a holly mechanical spread bore will I need an adptor that will raise it up more?

[Torque454]

id use the performer rpm air gap myself. Thats what I plan to use on my 454 when i get it done.

[SSedan64]

Originally Posted by david ahluwalia

I,m looking for a intake to go with my vortec heads I,m going with the Comp Cam 268H like the one in the 400 hp goodwrench artcal I,ve been following.They went with a Eldelbrock Air gap.I aslo here the performer Rpm is good to and alittle less money.My firend has a Air Gap in his 82 Z28 and there is no hood clearance,he hand to buy a cowl hood.Will this be the case with the performer Rpm? I also now have a holly mechanical spread bore will I need an adptor that will raise it up more?

The RPM & RPM Airgap have the same carb base height. Performer Airgap is lower. An adapter will add height. What vehicle do you have?

[Torque454]

The performer and performer RPM have different base heights tho i believe. That is what he is saying.

[roknroy]

if you don't want to buy a hood, i would buy an intake that accepts your carb without an adapter, rpm is available in spreadbore configuration...

[F-BIRD'88]

Both these instake manifolds will fit under your stock hood but only if you use the right drop base air cleaner. or at least the base.
60's era big block corvette used the right air cleaner for your low hood line.
It hugs down low like no other on the market. You can still buy these from Corvette and Chevrolet muscle car restoration parts dealers. But not from GM
It looks like this.
http://www.hotrodders.com/forum/atta...chmentid=29005

Will need minor mod at the back to fit an HEI distributor, and your throttle cable bracket as it sits low. Works best on a holley if you remove the choke air horn and shorten the vent tubes. It also increases the airflow into the carb.
Even with the mods required, it is much cheaper than buying a new hood.