Marty, I run a set of '71 455 HO heads on my bracket car that have been milled .025". I have done several intake swaps ('71 HO, '69 iron, Torker II) and all of them fit perfectly with no milling of the intake manifold or on the intake side of the head. I think the 'magic number' is .030" before any milling of the intake side is needed. [img]/infopop/emoticons/icon_wink.gif[/img]
Let's go racing!
www.outlawpontiacs.com/members/B-Man2.php
www.outlawpontiacs.com/members/B-Man.php
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1964 Tempest Coupe LS3/4L70E/3.42
1964 Le Mans Convertible 421 HO/TH350/3.08
2002 WS6 Convertible LS1/4L60E/3.23
1966 VW Type 2 Single Cab Pickup 140hp 2276
1956 VW Type 2 Panel Van 36hp 1200
1957 VW Type 1 Beetle 180hp 2276
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