-40%
Chevy BBC 396 454 Rectangle Port Assembled Aluminum Cylinder Heads 122cc 330cc
$ 755.03
- Description
- Size Guide
Description
KMJ BBC345124CBig Block Chevy Aluminum Cylinder Heads
330cc Intake Port * 122cc Chamber *
2.25"/1.88" Valves
For sale is a
PAIR
of our newly released Assault Racing rectangle port big block Chevy aluminum cylinder heads. These h
eads are assembled and ready to bolt on! Don't settle for a lesser set of cylinder heads, these are the best on the market at this price point! The casting quality is second to none, and these heads have been precision machined to exacting specifications!
These are the biggest and baddest sets of heads we have on the shelf, with monstrous 330cc runners! They'll handle everything you can throw at them: boost, nitrous, and ultra-high compression! From stump pulling to top fuel, they'll handle it!
Intake Port Volume
330cc
Combustion Chamber
122cc
Intake Valve Size
2.250"
Exhaust Valve Size
1.880"
Valve Stem Dia.
11/32"
Intake Port Size
2.50" T x 1.81" W
Exhaust Port Size
1.90" T x 1.65" W
Max Spring Dia.
1.730"
Exhaust Crossover
No
Plug
Angle
Weight
(per head)
28 lbs.
Hardened exhaust seats
Bronze valve guides
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
Threaded accessory holes in ends of heads
Thick deck to resist warping and allow for additional milling if desired
Comes with 7/16" Shouldered Screw In Studs and Guide Plates (Not installed)
All assembled heads are assembled right here in Iowa in our machine shop and checked by our machinists before leaving!
Assembly features:
1.525" diameter valve springs, good to .650" lift (flat tappet cams)
Stainless steel 1 piece swirl polished valves
10 degree chromoly steel retainers
Hardened steel valve locks
7/16" shouldered screw in studs and guide plates
Valve Material
Stainless Steel
Valve Type
1-piece, Swirl Polished
Valve Length
+.250" intake, +.100" exhaust
Valve Spring Dia.
1.525", Single
Spring Pressure (closed)
140lbs @ 1.900"
Spring Pressure (open)
380lbs @ 1.200"
Coil Bind
1.160"
Recommend Lift
.600"-.650" (flat tappet cams)
Retainers
4140 Chromoly steel
Valve Locks
10 degree, hardened steel
These are the best place to start when planning your next performance engine project. Perfect for high revving drag racers & stroker applications! Lots of features at a nice price makes these perfect for anyone that has always wanted to try aluminum heads or those doing more serious race duty as well. When paired with engine size and intended use these flow well and make power - many of our customer's favorite!
KMJ PERFORMANCE
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Payment:
Please make payment within 7 days of purchase. Paypal and Visa/MC/Discover credit card payments are accepted.
Please use the eBay message system if you have any questions or need assistance.
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We try and combine EBay auctions when possible. Normally it will be the highest shipping amount plus half the shipping amount on other items, sometimes better on orders of small items. Some items are not combined due to size or weight such as crankshafts, torque converters, radiators, cylinder heads, etc.
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