A guy on a local board was giving away some center bolt 305 heads, so I took him up on the offer. Here's some info I found about them on the web.

Casting #14102187
Combustion Chamber size CCs 58cc
Intake valve 1.84
Exhaust valve 1.50
Production Years 1987-91
Engine 305


CHEVY 1986-89 305 5.0 3.736 V-8 Flat Tappets, 1 Piece Rear Seal,

I'm gonna try my hand at pocket porting them and put them on my TBI 305cid L03 when I swap a new cam in.

Are these good heads a good starting point?

Cheston

 

Probably not...

Looks like swirl-port TBI heads to me.

Heads don't care whether the cam is roller or flat tappet, that's a red herring.

 

1986-88 14089119 350 1.94 1.5001 - EFI
1987 14101083 350 1.94 1.5001 - EFI
1987 14101128 350 1.94 1.5001 - EFI
1986-88 14102191 350 1.94 1.5001 - EFI, swirl port
1986-88 14102193 350 1.94 1.5001 - EFI
1986-91 10110810 305 1.84 1.5001 - EFI,swirl port, stat wgn
1986-91 14101081 305 1.84 1.5001 - EFI, std port
1988-93 14102188 350 1.94 1.5001 - EFI, swirl port
1986-91 14102187 305 1.84 1.5001 - EFI, swirl port

I'd start with a set of "081" heads. The castings are fairly clean
and should port up ok for a budget buildup

The "187" heads have a big swirl vane in the intake port,
which may be just the thing for gas mileage, but that vane
will really cut down the airflow and limit the HP.