| FAQ |
| Members List |
| Social Groups |
| Calendar |
| Search |
| Today's Posts |
|
#1
11-01-2006, 05:30 PM
|
||||
|
||||
what's the best intake for 2nd gen fb's
what is the best intake to run on a 2nd gen firebird, with for a mildly worked engine and still be able to clear the hood. is anyone able to run the rpm somehow(i.e. using a shorted air filter and lower dropbase cleaner).
Sean
__________________
71 firebird 400/th400, compcams XE274, #16 heads race ported by SD Performance, crane roller rockers, ati 3500 converter, transgo shift kit, 4.10 gears anybody can restore a car, it takes a real man to cut one up |
|
#2
11-01-2006, 06:03 PM
|
|||
|
|||
|
On my 77 TA,I run a Performer RPM with a 1/2 inch phenolic spacer under the carb. I had to custom build the air cleaner base, but it works great and looks awesome. A vendor on this site..WFO...also makes a drop base housing that will allow you to run a RPM on a 2nd gen 'Bird.
Chris |
|
#3
11-01-2006, 06:04 PM
|
||||
|
||||
|
The RPM will not fit , unless you use a Cowl or Shaker hood.
I run a Tomahawk single plane, the fit is perfect.
__________________
Also Known As "Beebe" on other sites....... PZ , Pro-Touring , Lateral-G, TAC |
|
#4
11-01-2006, 06:05 PM
|
||||
|
||||
|
Quote:
Your running a shaker hood correct.
__________________
Also Known As "Beebe" on other sites....... PZ , Pro-Touring , Lateral-G, TAC |
|
#5
11-01-2006, 06:16 PM
|
||||
|
||||
|
i should have said i'm running with a formula hood, so i guess i'm pretty much SOL with running the rpm intake
__________________
71 firebird 400/th400, compcams XE274, #16 heads race ported by SD Performance, crane roller rockers, ati 3500 converter, transgo shift kit, 4.10 gears anybody can restore a car, it takes a real man to cut one up |
|
#6
11-01-2006, 06:46 PM
|
|||
|
|||
|
Quote:
|
|
#7
11-01-2006, 07:53 PM
|
||||
|
||||
|
P dude makes a Dude scoop you could use...
__________________
68 Firebird Are you running with the wind or breaking it? |
|
#8
11-01-2006, 08:02 PM
|
||||
|
||||
|
Formula Hood
With the Formula hood your options are a stock cast iron intake, the Performer or the Tomahawk... even then you'll need a dropped base air cleaner and a 3" or shorter filter element. Best to install and then double check with a piece of clay or playdough... ask me how I know...
V/R, Ty
__________________
US Air Force Retired "FREEDOMBIRD" |
|
#9
11-01-2006, 09:47 PM
|
||||
|
||||
|
are the tomahawks any good for an engine that's not really gonna be above 5500-6000rpm. i think it my be overkill for my setup.
Sean
__________________
71 firebird 400/th400, compcams XE274, #16 heads race ported by SD Performance, crane roller rockers, ati 3500 converter, transgo shift kit, 4.10 gears anybody can restore a car, it takes a real man to cut one up |
|
#10
11-01-2006, 09:55 PM
|
||||
|
||||
|
Quote:
How do you know???
__________________
79 Trans Am 400 4 spd WS6 68 Firebird 400 Convertible 70 Pontiac GTO 2007 Pontiac Solstice |
|
#11
11-01-2006, 10:03 PM
|
||||
|
||||
A 'mildly worked' engine needs nothing more than a factory iron intake if you're running a Q-jet carb, or a Performer intake if you want the option of using a square-bore carb (Holley, etc.)
Both of these intakes will run better than anything else on a mild build, with the factory intake being the better one of the two. After seeing plenty of 11 and 12-second cars running the stock intake, it's a slam-dunk on any milder engine. Bonus: no Formula hood clearance problems. 
__________________
1964 Tempest Coupe LS3/4L70E/3.42 1964 Le Mans Convertible 421 HO/TH350/2.56 2002 WS6 Convertible LS1/4L60E/3.23 |
|
#12
11-01-2006, 10:34 PM
|
|||
|
|||
|
I second what B-man said
|
|
#13
11-01-2006, 11:44 PM
|
||||
|
||||
|
thanks for the help guys, that's all i needed to know.
it would be nice if we had readily available aluminum intakes modelled from the stock cast iron pieces. if nothing more then to save some weight. almost makes me want to take my intake to school and cast one for myself.lol
__________________
71 firebird 400/th400, compcams XE274, #16 heads race ported by SD Performance, crane roller rockers, ati 3500 converter, transgo shift kit, 4.10 gears anybody can restore a car, it takes a real man to cut one up |
|
#14
11-02-2006, 12:02 AM
|
|||
|
|||
|
The Edelbrock Performer is a nearly identical copy of the pre-1974 original cast iron factory manifold and is made of aluminum (both in EGR and non-EGR versions). There are also a few vendors now selling reproduction aluminum Ram Air manifolds. You can run a taller manifold, but you would need Larry's WFO air cleaner base to retain the proper height. I also agree with b-man, a factory version manifold is extremely hard to beat.
|
|
#15
11-02-2006, 12:29 AM
|
||||
|
||||
|
Don't forget the original Tomahawk, the Holley Street Dominator.
__________________
71 Formula 433, Splayed cap 400 block, 4" stroke Scat forged crank, 6.8 Eagle rods, custom Autotec pistons. SD 295 KRE D ports, Old faithful hybrid roller, Torker II, Holley Sniper Stealth, Tribal Tubes, TKO 600, 3.73 Eaton posi. |
|
#16
11-02-2006, 12:45 AM
|
||||
|
||||
|
use the performer; it works well, saves weight and fits.
mine has the deepest drop base i could fine, a 2.75" k&n element, and a particular top that also cleared. i have no stud protruding above the a/c lid but perhaps 1/16". still has scratched up the hood's bottom a bit, but it won't get through it. early second gens suck suck suck for hood clearance.
__________________
is this thing on? |
|
#17
11-02-2006, 08:56 AM
|
||||
|
||||
|
Interesting topic.
I have a friend who just bought a '77 Formula/4speed and asked if I come take a look at as the engine was running bad. When he opened the hood, there was a RPM intake sitting on this engine! I've tried to help folks in the past with clearance problems on the 2nd gen Formula's and all have had to run a Performer or stock intake. This particular car had NO clearance issues and retained the original air cleaner! I have no idea why this car has clearance to accomodate the RPM, while early 'birds don't. Everything on the engine is original. 
__________________
Home of WFO Hyperformance Shaker induction. |
|
#18
11-02-2006, 09:35 AM
|
||||
|
||||
|
Quote:
__________________
10C 1972 Formula 461 non A/C 08B 1969 GP J/428 non A/C |
|
#19
11-02-2006, 10:16 AM
|
||||
|
||||
|
How do I know?
Quote:
Dropped base, 3" K&N element... only 1/8 taller than the paper element it replaced... now I have a scar in the fiberglass under the center of my formula hood. The 3-pointed fancy air cleaner nut cleared the center of the hood but not the passenger side edge when the engine torqued and moved it around a little... DOUBLE CHECK WITH CLAY! "And now you know the rest of the story..." V/R, Ty
__________________
US Air Force Retired "FREEDOMBIRD" |
|
#20
11-02-2006, 12:06 PM
|
||||
|
||||
|
The Torker II isn't alot taller than the factory intake or the Tomahawk. My 81 TA with the flat hood on one side and the turbo bulge can fit a HO or Performer with a 1/2" spacer Holley or Q jet and a dropped aircleaner. But is close. I had to double check with clay. Don't know how that RPM fit.
If you have a 400 I wouldn't think of a single plane. There are repro HO/RAIV intakes if you want a stock aluminum look. Last edited by Skip Fix; 11-02-2006 at 12:29 PM. |
| Reply |
|
|
The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.
Linear Mode
