Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - Need some 307 advice
View Single Post
  #47 (permalink)  
Old 11-27-2012, 05:40 AM
cobalt327's Avatar
cobalt327 cobalt327 is offline
Last wiki edit: Intake manifold
Last journal entry: 1980 Malibu Wagon
Last photo:
Join Date: Mar 2009
Posts: 5,031
Wiki Edits: 1616

Thanks: 128
Thanked 616 Times in 565 Posts
Good point. Doing the obvious things like the lip below the seats and removing any casting flash/irregularities should be the extent of it unless you have experience and/or a lot of time and a flow bench- along w/enough heads to find out what is helping and what is hurting. After all, if you remove too much or from the wrong place, the head is now scrap; you cannot add the metal back and welding is in no way cost effective on these commonly available heads.

FWIW, there have been good builds using the L30 305 Vortec heads on the small bore SBC engines. One member here has them on a 283 and likes them just fine. Takes a Vortec intake, self aligning rockers, centerbolt valve covers, and a spring and retainer change.

Some info and photos of the L30 5.0L Vortec head can be seen at Vortec Cylinder Heads: The Definitive Guide, post 478.
Reply With Quote