Jorlain

iTrader: (4)

Hey guys,

I have the opportunity to get my grubby mitts on a pair of Pro Topline heads, but I'm having a heck of a time finding any information on them. As far as I can tell, there's no casting numbers on this other than in the middle of the head (Where it says Pro Topline 350C).

They appear to have a Vortec style combustion chamber, although I haven't the foggiest idea what size chamber it is. Additionally I haven't a clue what the runner sizes are or even what size valves she takes.

Would anyone happen to have any info on these heads?

http://i6.photobucket.com/albums/y22...Hw_600x450.jpg
http://i6.photobucket.com/albums/y22...1l_600x450.jpg
http://i6.photobucket.com/albums/y22...Fu_600x450.jpg
http://i6.photobucket.com/albums/y22...cV_600x450.jpg

Thanks!

-=Z28=-

iTrader: (3)

Id say vortec for sure. pretty small chamber. 64cc? No way they are above 70cc..

Jorlain

iTrader: (4)

Well, the seller got back to me and he's saying they're 67cc chambers with a 185CC intake runner. 1.94/1.5 valves, with new seats and guides.

Wish I could find some flow numbers on these things. I guess it's safe to assume they would at least flow like 906s.

-=Z28=-

iTrader: (3)

http://home.ardmore.net/tbarnett/ProCatalog.pdf

Check this out.

Jorlain

iTrader: (4)

Hmm... The Torker has the 67cc chamber, but they're D shaped rather than heart shaped. The stock replacements are 64cc chamber, and heart shaped. Being as the only part number that I can find is the 350C, what are the odds that this is an in-between or limited run head?

-=Z28=-

iTrader: (3)

Go down to page 61. Part #223 6494 906. Im still looking but thats the closest one Ive been able to find based on looking at the pics you sent. Vortec and heart combustion for sure. There should be other numbers on the heads.. Have they been milled? Looks like that is common to get c/r right for their particular motor..

-=Z28=-

iTrader: (3)

Honestly, I dont know much about this brand head. Even if you have the part number from the head, If any machining has been done, obviously the cc's, runners,ect will have changed. Regardless, they look like some nice heads. Who ever woulda bought heads like this should know what they are doing. So they should know everything about the heads they are selling. you would think...

Jorlain

iTrader: (4)

You would think...

Well, I might just pull the trigger on them and figure it out somehow. It's pretty tough to beat the price he's asking for them. Unfortunately I've never done head work before, though, so I really have no idea what I'm doing as far as what to purchase. My normal machine shop guy isn't around anymore, so I'm not even sure who else in this area does head work.

-=Z28=-

iTrader: (3)

So, they used to be called Pro Action, then they went to Pro Topline, then Comp cams bought them and now they are RHS, Racing Head Services... Sounds like they are older heads. Sounds like they are nice heads. remember you can get a nice set of aluminum heads for pretty cheap now a days.....Assembled... Good luck. Hope I was of help.

-Dan

-=Z28=-

iTrader: (3)

Holly ****! Your In MN!! heh. I can hook you up with machine shops. I went to college for machineing/building engines. I never went that way when I finished, but I know a few guys who own there own shop and know their stuff. Let me get you their number and call and ask about the heads. They know their stuff. If you want?

Jorlain

iTrader: (4)

I said the same thing when I noticed you were from MN!

Where abouts are you located? I'm obviously up in Brainerd\Baxter.

Jorlain

iTrader: (4)

Oh, and... Yeah! Any references you have would be great. I have friends that are mechanics, but none of them are into performance applications so I'm sort of off in my own little world, haha.

-=Z28=-

iTrader: (3)

Im down by the cities. Around Minnetonka. I sent you a message with a recommendation for a shop. I'd call them and ask. Very knowledgeable fellas. Jedis. Please be polite. Let me know how it goes. Doesnt ever hurt to call and ask.
-Dan

Jorlain

iTrader: (4)

Absolutely. Thanks for the assist, man.

-=Z28=-

iTrader: (3)

If they need to just get put together/minor work done, I may be able to help you with that. Do they need seat work? Or just be assembled? You must need to get springs and valves eh?

Jorlain

iTrader: (4)

From what he says, they have 0 miles on them since having new guides and seats installed. The heads have 15K on them total.

They are completely bare, so they will need to be assembled. I'm pretty mechanically inclined so I think I could probably tackle it if I can get my hands on the tools (I'm guessing I can probably rent them from Advance Auto). On the other hand, I obviously can't do a valve job, and I lack the experience of lapping valves, etc.

I don't have the motor I'm going to be using in my hands yet, but it's a 91 TBI roller 350 out of a full size van with about 76K miles on them. Runs and drives as is, so I'm hoping it'll need minimal machining to get it up to snuff. I wanted to get an idea on what heads I was going to be using before I started planning anything out.

Jorlain

iTrader: (4)

Assuming these are the 906 Vortec replacement heads in the catalog, does anyone have flow numbers on these? I'm coming up with a whole lot of nada. I'm driving about three hours round trip to pick these up tomorrow after work, so if anyone has any insight that'd be terrific!

Thanks,
-Mike