Speier Racing Heads v.4.20/BBC

Cylinder Head and Manifold Discussion

Speier Racing Heads v.4.20/BBC

Postby Chad Speier » Sat Nov 10, 2012 8:30 am

The 395cc BBC port is done!

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Chad Speier
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Chad Speier
 
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Re: Speier Racing Heads v.4.20/BBC

Postby bhb » Mon Nov 12, 2012 4:27 pm

Chad What are some of the difference between this head and the sniper x 375. I would think the target market would be a 565 or bigger with 7000 plus rpm is one better suited to a nos application.
Thanks BHB
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Re: Speier Racing Heads v.4.20/BBC

Postby Chad Speier » Mon Nov 12, 2012 4:45 pm

I think they both would be good with nos. This head will be geared more towards larger engines, like 565+. I have had a lot of calls on guys wanting to build 600+ pump gas engines. They would be way cool on that!

This is the same program with a few tweaks that I used for the iron truck puller heads. One made 1025 at 505 cid and the other made 970 at 482 cid, recently..
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Re: Speier Racing Heads v.4.20/BBC

Postby nemo963 » Sat Oct 04, 2014 10:02 am

Moving from my 540 with afr 355cnc heads to a 565 with nitrous. I think these heads are out of the box....am I better off having these heads worked over or starting replacing with heads like these?
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