Bracket Talk
PBM 320cc strike force heads BBC
June 12, 2019, 08:52 AM
The BozmanPBM 320cc strike force heads BBC
I was wondering if anyone has used these. Flow numbers seem to be 353 and 278 at .700 lift. Have these on a 489 BBC and was wondering if anyone had them on a BBC and how well they performed.
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June 14, 2019, 01:02 PM
The BozmanHard to believe no one has run these heads.
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June 15, 2019, 08:22 PM
DragRacerSBCLooks like the are the same or similar to the Speedmaster (ProComp) heads.
https://www.jegs.com/i/Speedma...PCE281.2031/10002/-1If you are looking for a budget Chinese BBC head I would look at Chad Speier prepped Flowtek heads.
Jason G.
'71 Chevelle
3370 lbs w/ SBC
5.93 @ 116.7 MPH - N/A
June 16, 2019, 07:21 AM
Busted KnucklesBest offshore castings I've seen are used by ProMaxx. Thick decks, good guides and seats, weigh about as much as AFR, Brodix, etc. and pass hardness test with flying colors. About $1150/pair bare. No comparison to ProComp junk.
Organized people are just too lazy to look for their $h!t.
June 16, 2019, 07:42 AM
The BozmanI already have these on a motor I got with a car so was just wondering what they are and what to expect. It’s a 489 roller motor
Keeping the Socialists and NEO-LIBERALS at bay with FACTS one post at a time !!!
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June 17, 2019, 06:27 PM
Bruce WilliamsThe PBM strikeforce heads are procomp.
They should work reasonably well in your 498.
Since it's a roller cam with roller springs I would advise making sure you have the longest exhaust rocker stud (bottom length into the head) you can install.
I actually advice this on any aluminum BBC head with big roller springs.
Bruce Lee
Experience is what you get when you don't get what you want.
June 18, 2019, 08:10 PM
The BozmanThanks Bruce, this setup has jesels on it
Keeping the Socialists and NEO-LIBERALS at bay with FACTS one post at a time !!!
Freedom isn't free !!! Thank a veteran, they will actually appreciate it.