Ad blocker detected: Our website is made possible by displaying online advertisements to our visitors. Please consider supporting us by disabling your ad blocker on our website.
There was a 250, a 287 and a 327. AFAIK they are all the same block (aside from the bore) and heads, so their manifolds should interchange. With different bores, each block would have its own casting, minimizing machining and waste material. There is some info on the Jubilee Jeeps site - http://jubileejeeps.org/327/index.htm - the author (Flint) is a member here and may join in.
Tim Reese
Maine beekeeper's truck: '77 J10 LWB, 258/T15/D20/3.54 bone stock, low options (delete radio), PS/PDB, hubcaps.
Browless and proud: '82 J20 360/T18/NP208/3.73, Destination A/Ts, 7600 GVWR
Copper Polly: '75 CJ-6, 304/T15, PS, BFG KM2s, soft top
GTI without the badges: '95 VW Golf Sport 2000cc 2D
Dual Everything: '15 Chryco Jeep Cherokee KL Trailhawk, ECO Green
Blockchain the vote.
Basically, what comes stock in the FSJ uses two right hand exhaust manifolds on the 327. This provides exhaust exit at the left front of the motor for the crossover pipe to wrap around the front. AFAIK, the exhaust and intake manifolds are the same between the 250/287/327 for the car applications. Also for cars, the right and left hand exhaust manifolds are different from each other and they exit at the back of the engine. That said, what you want is a left hand exhaust manifold from a car application.