| FAQ |
| Members List |
| Social Groups |
| Calendar |
| Search |
| Today's Posts |
|
#1
03-26-2005, 02:44 PM
|
|||
|
|||
hey guys,
another new guy question... I found a '70 YD 400 engine with small valve 16's that I'm going to have rebuilt. I don't want the 2bbl intake it has. Along with a more aggressive cam, bigger valves, ported n polished heads, n bored .030 over block, I have a 4bbl intake out of a '74 YL 400 engine I can use. Will I encounter any or big problems in doing so? Any help appreciated...thx. |
|
#2
03-26-2005, 02:44 PM
|
|||
|
|||
|
hey guys,
another new guy question... I found a '70 YD 400 engine with small valve 16's that I'm going to have rebuilt. I don't want the 2bbl intake it has. Along with a more aggressive cam, bigger valves, ported n polished heads, n bored .030 over block, I have a 4bbl intake out of a '74 YL 400 engine I can use. Will I encounter any or big problems in doing so? Any help appreciated...thx. |
|
#3
03-26-2005, 04:40 PM
|
||||
|
||||
|
Should swap over OK. Just make sure that you have the correct intake manifold gaskets that seal both the intake and the heads. I'd also go with an older intake if possible. Doesn't the 1974 use an EGR and has a restriction to the secondaries?
|
|
#4
03-28-2005, 08:14 AM
|
|||
|
|||
|
not sure, about the egr and secondaries... still learning about my own car. thanks
|
|
#5
03-28-2005, 08:21 AM
|
||||
|
||||
|
THE 74 HAS THE EGR.BETTER OFF GETTING A 72 AND DOWN OR A PERFORMER MANIFOLD
__________________
1977 Trans Am,400 4 speed,numbers matching car  1979 Bonneville ,1 owner car...  1997 Trans Am convertible,LT1/auto. |
|
#6
03-28-2005, 03:49 PM
|
|||
|
|||
|
Use a factory 1967 to 1971 manifold. They work as well as a Performer and they are cheap. 1972 and newer wont easily fit your heads. Stick with the Q-jet for good off the line performance and top end power.
|
|
#7
03-28-2005, 04:23 PM
|
||||
|
||||
|
i have a few of the cast iron pre 1970 intakes, but i would still recommend a performer over the cast, if not for any performance gain at least a big weight difference
__________________
Car Craft Garage. Automotive Restoration |
| 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
