protopline or proaction heads

[DL]

all they say is pro under the valve covers!! i also found some #'s on a head 223400080A & 227340602T thanx for looking.

 

[crd89stang]

the pro topline heads i have seen said pro topline

 

[TOMS78BU]

I'm pretty sure mine say Pro Topline on them, but will have to pull a valve cover to make sure.

 

[dev1360]

Mine say RHS under the valve cover. And my part numbers stamped on the end arent that long. I don't know if they say pro topline under the cover or not.

 

[dvanhorn]

pro 223400080A = Pro Topline 23 Degree Iron Lightning Cast Iron Chev SB Head 180cc/64cc, Angle, 2.02/1.60
227340602T is the serial# I googled it, www.competitionproducts.com is were I got the info. Hope this helps.

 

[DL]

thanx for the info!!!! with those small intake runners and spraying 250 to 300 is still leaving a little on the table.