You may be right there... The lift at the cam is supposed to be 375... If I had to take a guess before you try it, I'd say you're probably going to hit though... Check and double check... Clay... And remember to add whatever the rule of thumb is for heat expansion. It's a gamble... Have the heads ever been milled? Etc... And even if there isn't any actual contact... Is there going to be enough clearance for proper flow? Good luck. Any time you use old parts, it's an adventure... Flatheads!
Kilroy thanks for the advice I agree you can never tell with old parts but thats what makes it a challenge and seperates us from everyone else. I plan on claying and I agree that with expansion it probably would not work without any kind of relieving. I'll keep you posted on my progress. Nice to get feedback from others who know there*****! This Flathead stuff is Awesome! Glad I decided to go for the challenge! Would love to find Some Weiand CHeater Heads With the 400 Stamp? Wonder if that would be a perfect match but Like you mentioned we still would have to clay to be safe. Never know what Used Speed Equipment has been Machined to. Thanks Again, BBoy
Yeah, I chose a Potvin 3/8 to go under my Navarro heads (400 clearance)... It should work fine but you still have to check everything out... Vintage heads are tough. Just about every set I've come across has shown signs of milling so you do have to check everything out really good. But it's fun to look for that needle in the haystack just the same. I used to hang out at Weiand before the sell-off... It was a fun place to visit. His daughter just didn't have much of a concern for the history of the company and didn't really seem to care about the flathead stuff... A bunch of us tried to get her to reproduce some of it, but no dice... I think there were quite a few guys trying to get her to sell the patterns even but she wouldn't do that either... So it just all kind of died with the company... I wonder if the patterns are out there though... I can't believe it's all just gone.
I believe your right Kilroy! The patterns must be out there. I would not be surprised if we will see them soon out on the market! It just doesnt make sense that Weiand, Being so Well known, would not want to keep producing on such a Legendary Name and Quality product. To me, Weiand is just a Pioneer and His name should be on the market for us who want to rock his parts on our cars. PURE SOUL BABY!
i have an og set of eddie meyers on my roadster they are stamped 375 how much should grind my cam for them to work on my new motor. there on a stock one now. billy
Well I believe the rule of thumb is .010 min clearance hot... The gasket usually will give you about that, so IF the head really is 375, you should be able to fit a .375 lift cam under them... That's IF the cam is legit, measured at the valve, hot .375... But some cams are advertized with lobe lift, not at the valves. Nothing is very precise in flatheads... Even brand new Edelbrock and Offy heads can be way off as far as pocket-depth. Measure twice... Then measure again. Measure the heads first and make sure they're .375 and haven't been milled. Then if they haven't ask the Cam guy a bunch of questions about the .375 cam (eg: Whats the final lift at the valves hot?). And you should be fine... But after you get it all together, measure it again (clay). If it's close you can run copper gaskets to give you a little clearance... Some guys have even doubled them for a little more space.
BanjoBoy, Mark Kirby at Motor City Flathead/Shaddo Rods started casting stock looking heads like the Weiand Cheaters but with his latest combustion chamber design. You might want to give Shaddo rods a call.
Hey guys. I have a set of weiand heads that have F R on the lower center on them. Ill list the pics when I get my camera back from the old lady.
When I got the heads they came with a matched Weiand 2x2 spread intake manifold that had no gen. mount, the face sloped down to the front. and came with 94's that were modified. I was told the set was off a lakebed car.
Hi guys! My set of weiand heads for a 1948 flathead are labeled "FR" in the center bottom and stamped 775 behind the water neck. Can anyone tell me what that means?
here is a photos of my 61-62 weiand catalog that I took last night a guy asked about early heads, I posted but the thread seems to have dissapeared? Anyone know why? did it turn nasty or something? I went to bed just after posting so didn't see if anything else happened?? Anyway, heres some info.
Well- reading the description of the 59ab heads, I guess I have the racing heads since I needed to use the taller studs on the bottom row of head studs. Cool. I'll take a new set at $96.50 please!
Great Pics and info Flatoz! I had the other thread but someone deleted it cause it was to much like this thread and they didnt want to many threads that were on the same subject.
Hell ya! Nothin like nos. No worries of cracks or wear. Make sure you use an anode in the radiator so the heads dont oxidise from the inside out. And its cheap insurence!
'Sacrificial anode' You have one in your water heater. It's a piece of metal that deteriorates faster than the metal in your heater. In a flathead it's there so the aluminum parts don't currode as quickly. It's a dissimilar metal thing... Like in plumbing... Aluminum parts on a flathead currode quickly because the aluminum tries to sacrifice itself to save iron in the block. That's a simplification but it has to do with ionization etc and to make a long story short, I think the anode is copper and has to be replaced from time to time.
Anode is a little metal rod that grounds out inside the radiator and is made to carode instead of the aluminum heads. You can find them in the Summit catalogs. If they would have came out with them back in the fifty's there would be a lot less damage from carosion with aluminum parts that have water ports.
The anode that I have used is made of zinc. You can also plug them in each head in the unused temp ports if they are drilled. Good info Kilroy! You can find anodes for around $10 each. Cheaper than having your heads welded and machined!
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