Assault Racing Complete SBC Small Block Chevy Aluminum Cylinder Heads Straight Plug 350 383 400

Complete Small Block Chevy Aluminum Cylinder Heads

200cc Intake Port, 64cc Chamber, 2.02/1.6 Valve, Straight Plug 

New pair of Assault Racing Heads.

These heads are complete and ready to bolt on. 

• Hardened exhaust seats for unleaded fuel compatibility
• Bronze valve guides
• Manufactured with aircraft quality high grade aluminum alloy
• Multi-angle seat design for improved flow at low lifts
• Advanced port design for improved flow at all lifts
• Advanced combustion chamber design allows superb flame travel and burn
• Additional pushrod clearance machined along outside port walls
• Can use either early or late (Vortec) intakes
• Can use either perimeter bolt pattern or centerbolt valve covers
• Threaded accessory holes in ends of heads
• Retains stock 23 degree angle and intake/exhaust bolt locations
• Thick deck to resist warping and allow for additional milling if desired
• Does not require offset rocker arms

 These heads will work for all small blocks including 400s (no steam holes). Heads are drilled for both the earlier style intake bolt pattern (pre '87) that had all bolts going in at an angle and the newer Vortec style that has 4 on each side going straight down in. 

All assembled heads are assembled right here in IOWA in our machine shop and checked by our machinists before leaving! If you have a problem you can call us.

Assembly features:

• 1.46" diameter dual valve springs, good to .650" lift (flat tappet cams)
• Stainless steel 1 piece swirl polished valves
• Chromoly steel retainers
• Hardened steel valve locks

ADD OUR ROCKER-STUD-AND-GUIDEPLATE PACKAGE FOR NO ADDITIONAL SHIPPING!:
Flat Guideplates and 3/8" Rocker Studs $30.00
Flat Fuideplates and 7/16" Rocker Studs $30.00
Price is with purchase of complete SBC aluminum heads