Hello,
Has anyone tried bolting on Edelbrock BB heads onto a BB with closed chamber pistons? My current set up is "063" 101CC closed chamber heads with stock pistons. The pistons do have a small pop up to them. Will my compression ratio go way down?
Partsamerica.com has them listed for $1550.00 which does not include a 25% discount, ($1165.00). Sounds like a killer deal.
Rick

[This message has been edited by rickmack (edited 09-07-2000).]

First off, How do you get the 25% discount???

I have these heads on my 396 with TRW pistons that have a very small dome. The RPM Performer heads were SUPPOSED to have 110CC chambers but when I had them cc'ed, they came out 112cc. So, I milled the heads down .035 and now the chambers are 106cc which results in @ a 9.6 to 9.7 to 1 compression ratio with my pistons.

The valve to piston clearance with my current cam which has a little over .600 lift and 236 degrees duration @ .050 is .0120. Since min. clearance is .0100, I would be a little concerned with your pistons with the larger domes unless they had very deep valve reliefs.

By the way, these heads produce tremendous power and with their good heat dissapation, I run a 150 shot of nitrous without having to retard the timing. Detonation has never been an issue with this combination.




[This message has been edited by sr71bb (edited 09-08-2000).]

Thanks for the info, I guess partsamerica.com just takes the discount off your purchase? I have never purchased anything from the company. I also emailed Edelbrock, I will let you know what they say, if they respond. It sounds like it is a roll of the dice to see whether they will fit?
Rick

Rick, if better ET's and more power are your goal, stay with your cast iron oval ports. You will go ET slower with these or any aluminum head with low to moderate compression. And yes you will lose compression just bolting these heads on.

[This message has been edited by racer1320 (edited 09-09-2000).]

Welcome to Team Camaro racer1320! Your racing experence and knowledge of applying it to be streetable will be appreciated by the folks here. Like the chevelle site you will find the guys here are dedicated to their cars and having a good time with them...

Rick - New heads and a vacation... Life is good! Hope we see ya at the track on the 23rd.

------------------
...Dennis
Topless'69 (http://home1.gte.net/ddunio/topless69)
Camaros Limited Nor-Cal (http://camaroslimited.com)
rsss.fun@gte.net

Well, my wife doesn't exactly know that I am researching the heads... Racing on the 23rd is still a possiblity for me. Talk to when I get back.
Rick

Dennis, thanks for the words. Hope I can contribute. Just looking to inform the guys here about what really works and what is just marketing. There's a lot of bad info out there and I'd like to help set the record straight.