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Original Message
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| I tried 390 Fairlane manifolds on my Cyclone CJ |
| By Dave Shoe - 07/10/2002 1:14:33 AM; IP 63.233.196.92 |
I once installed Fairlane 390 manifolds on my 1969 Cyclone CJ.
I removed a set of Cyclone brand headers ($89.00 a set at MAS two decades ago) and installed some 390 Fairlane exhaust manifolds and could not squeal the tires from a dead stop. The car previously ran like a raped ape with the headers. I quickly bought a new set of Cyclone headers (the other set was getting old).
Note that there is an extra port mismatch between the 390 Fairlane exhaust manifold and the 428CJ heads - such a mismatch that exhaust can sometimes leak out above the 390 manifold - but they are still the most restrictive FE manifold ever made for any vehicle (my opinion). Use them if you seek the stock appearance or a smooth quiet ride, but if you want performance you need to upgrade the exhaust manifolds. The rest of the exhaust system is fine.
Keep in mind: When you replace the intake and exhaust manifolds with CJ items, your engine will behave much like a 428CJ.
You will need FPA headers for the 390GT with those heads. CJ exhaust manifolds fit both high and low exit heads, but you'll need to redrill one hole to get them to work on the 390 engine.
Shoe. |
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