Join Date: Aug 2008
Location: Saskatchewan, Canada
Re: 289 Build Question
The 351 manifold won't fit on the 289, it will be too wide. I thought the 69 and 70 351 heads were the same, or very similar, and the good ones to use for an old school 289 upgrade. A cam change may be more important than pistons if there is a compression loss. Is there any point in putting better heads on the engine without running a cam that can take advantage of better flow? A new cam that appropriate would require new springs, so you're into a complete rebuild of the heads, then probably rockers and pushrods, etc, etc. If money is the issue, the best bang for the buck may be to save this money and put it towards the stroker build. With old parts, like the heads, you're really just buying cores for rebuilding, unless they have already been rebuilt.
1970 XL, 351W originally 2V, now 4V
670 Street Avenger, Edlebrock Performer intake, Comp XE262H, Flowtech Headers