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Woods Racing Javelin of George Follmer


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The series had a 305 c.i. displacement limit.  Starting in the '70 season, the SCCA allowed de-stroking of the engine to meet this requirement and AMC used the 390. 

Edited by afx
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All AMC V8 Engines from 290 through the 401 have the same block dimensions. In fact, the block casting has the displacement cast into the passenger side of the block. So any kit AMC engine would be the basis for the T/A engine externally. In 1970 the SCCA changed the engine rules to encourage more manufacturers to participate. Prior to 1970, the rules stated that any engine of 5 liters (305 ci) was eligible for the series. That's why the early Dart cars used the 273 ci as its basis for their T/A engine and the Ford used the 289 then the 302 as it's basis for their T/A engine. Chevrolet used the bore of a 327 and the stroke of the 283 to come up with the 302 as homologated in the Z/28 for their entrant. 

In 1970 the rule was changed to allow a manufacturer to de-stroke an existing production engine to fit the 5-liter limit. That's why the Z/28 in 1970 used the LT1 350 rather than continue with the limited production (and expensive to produce in small numbers) 302. Chrysler Corp and AMC could now enter the series without resorting to homologating a special 5-liter engine, although AMC did have a 304 ci engine they could have used. AMC did homologate a heavy duty block in the Mark Donahue edition SST Javelin. It was a 360 ci engine with a special block with thicker webbing that would accept aftermarket 4 bolt main caps even though the production engine still utilized 2 bolt caps.

Ok, so after this long winded post, the bottom line is any available AMC engine would be a good start for your T/A Javelin build. Nice start by the way.

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