The vortech's are great for 327's IMHO. What kind of 350 head are you considering ? Make sure the chamber is small, around the 64 cc's like the double humps had and the intake runners are small, like around 180cc's etc.
69 Camaro -originally a LM1 car. 327, Edelbrock E-streets, hooker, DUI performance distributors, ultradyne cam, stewart, TRW etc. Vintage Air, AGR steering, Corbeau GTSII seats, 700R4 transmission, 12-bolt w/Eaton 4.11:1
No, they have a different bolt pattern. You can buy a different manifold and valve covers or get heads that are drilled and tapped for the old style. (more money). Another possibility is to buy diffent heads like the RPM's, world, Dart, etc.
Please read what I posted under the 327/210 post above and hopefully it will be of some help.
As for a lo-po 327 motor, the CR. is so low that you just can't slap a good sized cam her AND get her to run good..
My .040" over 327 with about 9.75 to 10 to 1 CR. and with medium valved double humpers ran great with no more then a Little Fireball type cam in her so this should tell you something!!
Please look into the 305HO, -416 heads b/c they just may be the ticket for you and a 327 hi-po motor runs really great with no bigger then the stock, -461x big valved headed variety with ports right at 170cc's..
The usual heads on alot of the hi-po motors were like just medium valved sized double humpers at 160cc's or so..
And don't forget to install a cheap set of headers b/c the little motor likes to breath good on the way out, too!!
Just my humble opinion and really only trying to help.. pdq67
PS., and sure you can get them to run real good with a 290/250 or so solid cam BUT you have to have at least 11 to 1 CR. or she just won't work.
My long gone crippled buddy that had the '58 Vette Convert. with a '64 375hp/327 F.I. motor in her and an Isky Z-30 cam would run above 7,000 and still be pulling!!!
Like talk about 160+ with 3.08 gears one night between 10 and 11 PM for about 8 miles or so back when I was about 17 years old!! When I asked what we were running, the tach said 7,200rpm and she was still climbing...