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My bad, your correct, I was thinking of the 427 block.
Ford built up the CJ-428 into an SCJ by adding tougher forged aluminum pistons, beefy "LeMans" rods developed for the GT40's 427, that were held onto the crank by cap screws and larger rod bolts than the standard CJ-428. The engine was balanced by using an external counter-balancer behind the crank's vibration damper, along with a racing style external oil cooler mounted on drivers side of the front of the radiator core.
I should have also stated that the gnarly, no-spin Detroit Locker differentials were not a standard SCJ option until 1970 when some one chose the "R" code Drag Pack option. Before that Ford used what they called a strip-ready Traction-Lok limited-slip geared in either 3.91:1 or a 4.30:1 axle ratio to back up all SCJ engines.
All this & still there was no horse power difference between the CJ & the SCJ. Ford rated the big FE motor at 335hp, but it actuality they were proven to be in the 440hp area, over 100hp higher then Ford claimed. This of course was done for insurance purposes.
Actually, it was accurate given the engine series being discussed is the 385 family. Design revisions for the 429 CJ/SCJ were done in mid/late 1969 and first offered in production vehicles in 1970/71.
And let's not forget, the oft overlooked 406 also had cross bolt mains.
Comments
I've not heard of a crossbolted main 428 block to make 4 bolt mains. 427's, yes, but 428's??
And some fun words: Cammer and tunnel port.
My bad, your correct, I was thinking of the 427 block.
Ford built up the CJ-428 into an SCJ by adding tougher forged aluminum pistons, beefy "LeMans" rods developed for the GT40's 427, that were held onto the crank by cap screws and larger rod bolts than the standard CJ-428. The engine was balanced by using an external counter-balancer behind the crank's vibration damper, along with a racing style external oil cooler mounted on drivers side of the front of the radiator core.
I should have also stated that the gnarly, no-spin Detroit Locker differentials were not a standard SCJ option until 1970 when some one chose the "R" code Drag Pack option. Before that Ford used what they called a strip-ready Traction-Lok limited-slip geared in either 3.91:1 or a 4.30:1 axle ratio to back up all SCJ engines.
All this & still there was no horse power difference between the CJ & the SCJ. Ford rated the big FE motor at 335hp, but it actuality they were proven to be in the 440hp area, over 100hp higher then Ford claimed. This of course was done for insurance purposes.
Trinity +++
And let's not forget, the oft overlooked 406 also had cross bolt mains.