Page 339 - 2021-22_EngineCatalogAP

ENGINE BLOCKS
302/351W “SHP Blocks”
(Special High-Performance Blocks)
With an 8.200” deck height and a choice of 4.00” or 4.125” Siamese cylinder bores, the
302 “SHP” block can safely be bored to 4.185”. The steel main caps use 1/2” bolts and
are splayed 4-bolt on the center three and 2-bolt on #1 and #5. The valley accepts factory roller lifter guides and retainer (spider). Decks are .625” thick and the Siamese cylinders have a minimum wall thickness of .230”. A great starting point for a hot rod engine with up to 600 horsepower, it’s compatible with stock components.
302/5.0L “Iron Eagle” Engine Blocks
Replacement block for 302 Ford eliminates many of the stock block’s inherent weakness-
es with steel four-bolt main caps in the Sportsman block and billet main caps in Iron Eagle blocks, an 8.200” deck height, priority main bearing oiling, and lengthened cylinder barrels to accommodate longer strokes.
351 “Iron Eagle” Engine Blocks
Replacement block for 351W Ford has steel four-bolt main caps in Sportsman blocks and billet main caps in the Iron Eagle blocks, priority main bearing oiling, 351 Cleveland main sizing, and lengthened cylinder barrels to accommodate longer strokes.
302 Siamese Bore Wet Sump Blocks
All new block can accommodate up to 363 CID. Splayed, nodular iron four-bolt main caps on journals 2, 3, and 4, screw-in O-ring sealed freeze plugs, 1/2” head-bolts, and a one-piece rear main seal make the block stronger than the original.
Boss 351 Siamese Bore Wet Sump Blocks
High-performance 351 CID cylinder blocks intended for competition use. 351 Boss race casting is fitted with four-bolt, nodular iron main caps on journals 2, 3, 4, and 5. Boss race block additionally may be bored as large as 4.125” and stroked to obtain a maximum 454 CID.
Part No.
Description
Deck Ht.
Bore
Main Bore
Main Cap
DRT31374175
302 Iron SHP Block
8.200"
4.000"
2.249"
Steel
DRT31374275
302 Iron SHP Block
8.200"
4.125"
2.249"
Steel
DRT31375235
351W Iron SHP Block
9.500"
4.125"
2.749"
Steel
Part No.
Description
Deck Ht.
Bore
Main Diameter
Main Cap
DRT31394275
Iron Eagle Engine Block
8.200"
4.125"
2.249"
Billet
† Sportsman blocks do not include freeze plugs, coated cam bearings, and dowels.
Part No.
Description
Deck Ht.
Bore
Main Diameter
Main Cap
DRT31355235 †
Iron Eagle Sportsman Engine Block
9.500"
4.125"
2.749"
Steel
DRT31395235
Iron Eagle Engine Block
9.500"
4.125"
2.749"
Billet
† Sportsman blocks do not include freeze plugs, coated cam bearings, and dowels.
Part No.
Description
Deck Ht.
Bore
Max. Bore
Max. Stroke
Main Cap
FRDM6010-BOSS302
Boss 302
8.200"
4.000"
4.125"
3.400"
4-Bolt
Part No.
Description
Deck Ht.
Bore
Max. Bore
Max. Stroke
Main Cap
FRDM6010-BOSS35192
Boss 351
9.200"
4.000"
4.125"
4.000"
4-Bolt
2021-22 ENGINE BUILDER CATALOG 337
FORD SMALL BLOCK 221-351W