| Chev SB Dome (12.6-15.1:1 w/64cc) |
| RAPB355D (355) 350 Main, 4.030 Bore, 3.480” Stroke |
| RAPB357D (357) 350 Main, 4.030 Bore, 3.500” Stroke |
| RAPB377D (377) 400 Main, 4.155 Bore, 3.480” Stroke |
| RAPB383D (383) 350 Main, 4.030 Bore, 3.750” Stroke |
| RAPB393D (393) 400 Main, 4.155 Bore, 3.625” Stroke |
| RAPB406D (406) 400 Main, 4.155 Bore, 3.750” Stroke |
| RAPB421D(C) (421) 350 Main, 4.155 Bore, 3.875” Stroke |
| RAFR421D (421) 400 Main, 4.155 Bore, 3.875” Stroke |
| RAPB434D(C) (434) 350 Main, 4.155 Bore, 4.000” Stroke |
| RAFR434D (434) 400 Main, 4.155 Bore, 4.000” Stroke |
| RAPB461D(D) (461) 400 Main, 4.155 Bore, 4.250” Stroke |
| (C) Designed for use with after market blocks, such as Dart, World, Bowtie, etc. |
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| (D) Designed for use with 9.325” or 9.500” deck after market blocks, such as Dart, Brodix, Rocket, etc (specify deck height). Features HRC flat top pistons (14.25:1 approx.) |
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| Chev BB (Features double keywayed snout) Dome (12.9-13.9:1 w/119cc) |
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| RAFR468D (468) 454 Main, 4.310 Bore, 4.000” Stroke |
| RAFR496D (496) 454 Main, 4.310 Bore, 4.250” Stroke |
| RAFR540D(F) (540) 454 Main, 4.500 Bore, 4.250” Stroke |
| RAFR557D(G) (557) 454 Main, 4.500 Bore, 4.375” Stroke |
| RAFR565D (565) 454 Main, 4.600 Bore, 4.250” Stroke |
| RAFR572D(H) (572) 454 Main, 4.500 Bore, 4.500” Stroke |
| RAFR582D(G) (582) 454 Main, 4.600 Bore, 4.375” Stroke |
| RAFR598D(G/H) (598) 454 Main, 4.600 Bore, 4.500” Stroke |
| RAFR632D(G/H) (632) 454 Main, 4.600 Bore, 4.750” Stroke |
| (F) Also available w/Flat Top (RAFR540F 9.3:1) or Mini Dome (RAFR540MD 10.4:1). |
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| (G) Features Custom Pistons (any CR). |
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| (H) Designed 10.200” deck height. |
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| Ford SB (SVO Mains w/9.500” Deck) Inverted Dome (9.7-10.0:1 w/58cc) |
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| RAPB408FiD (408) 351C Main, 4.030 Bore, 4.000” Stroke |
| RAPB418FiD (418) 351C Main, 4.030 Bore, 4.100” Stroke |
| RAPB427FiD (427) 351C Main, 4.125 Bore, 4.000” Stroke |
| RAPB438FiD (438) 351C Main, 4.125 Bore, 4.100” Stroke |
| Ford SB (SVO Mains w/9.500” Deck) Dome (13.4-14.2:1 w/58cc) |
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| RAPB408FD (408) 351C Main, 4.030 Bore, 4.000” Stroke |
| RAPB418FD (418) 351C Main, 4.030 Bore, 4.100” Stroke |
| RAPB427FD (427) 351C Main, 4.125 Bore, 4.000” Stroke |
| RAPB438FD (438) 351C Main, 4.125 Bore, 4.100” Stroke |
| Options: Balancing (plus heavy metal if necessary) |
| Tool Steel Pins |
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| Chev SB Crank w/Big Block Snout |
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These “American” kits feature Howards HRC state-of-the-art Precision Dense Forged Racing Rods w/ARP 2000 capscrew fasteners, HRC Track Smart 4340 forged crank, HRC forged 2618 pistons and a set of HRC True Seal™ plasma moly rings. Howards finishes these kits with a set of race rod and main bearings. Internally race balanced. 
Our most popular race kits! These kits feature premium American made parts you can rely on. American 4340 steel contains much higher percentages of Nickel and Chromium. These materials are crucial to strength and durability. We start with a Howards Track Smart 4340 forged steel crankshaft, matched with a set of Howards forged 4340 rods and a set of Howards or SRP by JE pistons. We finish these kits with Clevite “H” series rod and main bearings, and a set of HRC Plasma Moly file fit rings. 
The ultimate kits for your high horsepower needs. These kits feature the top of the line forged parts. Each kit includes a Howards Pro Max™ deep case hardened 4340 crank, a set of Howards Ultimate Duty™ Forged Billet rods and a set of Howards forged dome pistons. These kits also include Clevite “H” series rod and main bearings, and a set of HRC True Seal™ Plasma Moly file fit rings. 
The question is do you? Do you really want inferior “low nickel” imported parts in your American machine? Imported parts have become popular because of price. But what if you can have American race quality at a price you can afford? Then these are the short blocks for you. Professionally assembled by dedicated experts. Each part is hand scrutinized before balancing and final assembly. 
