Best heads for a 421 turbo motor
03-08-2005, 10:38 PM
#17
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Join Date: Aug 2004
Location: SE PA
Posts: 93
Re: Best heads for a 421 turbo motor
Get SB-2's, little chiefs or GM symmetrical ports. We have a twin turbo 18* headed 400 that we drag race. Because of the exhaust valves next to each other in the center ports it eats the head gaskets up every 12 runs. It makes great power but after 3 runs it loses some power and after 12 were putting gaskets on it.
If you build a engine with these heads and a couple of turbos or even 1 101mm you will be able to have 1500 to the wheels and it will be streetable. here is one that was just on ebay that did not make reserve:
http://cgi.ebay.com/ebaymotors/ws/eB...RK%3AMEWA%3AIT
If you build a engine with these heads and a couple of turbos or even 1 101mm you will be able to have 1500 to the wheels and it will be streetable. here is one that was just on ebay that did not make reserve:
http://cgi.ebay.com/ebaymotors/ws/eB...RK%3AMEWA%3AIT
03-09-2005, 08:54 AM
#19
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Location: SE PA
Posts: 93
Re: Best heads for a 421 turbo motor
Originally Posted by Birdie2000
That looks like the engine from the BMR project car. Man, I wanted to see that thing run. 
03-09-2005, 09:10 AM
#20
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Join Date: Jun 2002
Location: Westland, MI
Posts: 1,519
Re: Best heads for a 421 turbo motor
Really, where'd you see that? He used to have it on the website, but never updated in like a year or two now, and took down the link to it. I assumed nothing happened with it since he has those other two projects.
03-09-2005, 09:41 PM
#21
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Re: Best heads for a 421 turbo motor
Originally Posted by Birdie2000
Really, where'd you see that? He used to have it on the website, but never updated in like a year or two now, and took down the link to it. I assumed nothing happened with it since he has those other two projects.
03-09-2005, 09:47 PM
#22
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Location: Toledo, OH
Posts: 1,639
Re: Best heads for a 421 turbo motor
They dont have a dedicated URL for it anymore, you can only find pics in the directory
http://www.bmrfabrication.com/buildup/
http://www.bmrfabrication.com/buildup/
03-09-2005, 10:21 PM
#24
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Join Date: Aug 2004
Location: SE PA
Posts: 93
Re: Best heads for a 421 turbo motor
Originally Posted by jonaddis84
They dont have a dedicated URL for it anymore, you can only find pics in the directory
http://www.bmrfabrication.com/buildup/
http://www.bmrfabrication.com/buildup/
I guess they never finished it....
03-12-2005, 06:13 PM
#25
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Join Date: Nov 2001
Location: In a house by the bay
Posts: 2,985
Re: Best heads for a 421 turbo motor
Don't know if you guys are talking it up on the Little Chiefs seriously or not but I have been doing quite a bit of homework on them. Was seriously considering them for my next build until I talked to Dick Maskin at Dart. Come to find out, the LC's require their own block due to the valve/lifter locations. That means it's gonna need a lot of custom stuff to make it work and I already have a nice older dart block so..... no LC's for me.
-Mindgame
-Mindgame
03-15-2005, 02:40 PM
#26
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Join Date: Oct 2002
Posts: 6,518
Re: Best heads for a 421 turbo motor
Not going to say I have a choice between the two.... but there is a good thread about them here: http://speedtalk.com/forum/viewtopic.php?t=858
Good info about the new Splayed Valve GM head.
Bret
Good info about the new Splayed Valve GM head.
Bret
Last edited by SStrokerAce; 03-15-2005 at 02:44 PM.
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