All those cheap assault heads need " put down" as in euthanized!

 

I’ve never heard of them.

 

AI told me this.....

BBC KMJ Assault Heads Flow

The BBC KMJ Assault 330cc and 345cc heads have been discussed in forums regarding their flow characteristics as-cast. Specifically, there is interest in the flowbench test results for these heads.1
For the BBC KMJ Assault 330cc heads, Assault Racing Products offers assembled aluminum cylinder heads with a 330cc runner size. These heads are designed for high-performance applications and are capable of handling boost, nitrous, and high compression.3
AFR's 345cc BBC cylinder head is recommended for radical street/strip, "Pro Street," or racing applications with displacements up to 572 cubic inches, operating at or below 7000 RPM. These heads are capable of flowing 401 CFM at 0.700" of lift.4

• BBC KMJ Assault 330cc heads: These heads are assembled and ready to bolt on, designed for high-performance applications.3
• AFR 345cc BBC cylinder heads: These heads can flow 401 CFM at 0.700" of lift and are suitable for high-displacement engines.4

 

 

Is that the head bites guy?

 

LOL yep.....never flowed em though.

 

 

I have a pair laying under the bench a guy brought to fix. All the intake rocker threads are junk on them and 1 intake seat leaks water. We threw one on 1020 bench. 330 head measures 336 cc and flow 337 cfm @700. Just lite lap 2.250 valve. No backcut etc. The guides were about half a thou to tight on intake and little worse on ex. I guess that is better than to large. They are a decent item to site rifles in at 1000 yards. And that is their only place imo they belong

 

 

This is a sbc over view by Eric.

 

JMO, they won't flow as much as the USA heads they were copied from. In general, from the Chinese heads I have had in my hands for rebuilding engines, I see the guides, valve seats, and valves need to be replaced. The valve seats are not good to resurface, chatter unless using stones, and may have material missing. The guides are worn excessively, and the valve stems are worn because the guides are. A $1200 set of heads need $800 of repair cost to restore to original condition. I consider Chinese heads as consumable, 1 time use. JMO.