Euro Cams
Thread Starter
Pro
Joined: May 2004
Posts: 628
Likes: 0
From: Mill Creek, Wa
Euro Cams
I have a 4.7L 83 928S. Has anyone tried installing Euro Cams in the 4.7L before? Have a choice of 1980 Euro Cams or 1984 Euro Cams?
Specs on 80 Euro cams:
In lift: .396
Exh lift: .350
In Duration: 216
Exh dur: 206
Specs on 84 Euro S cams:
In lift: .472
Exh lift: .432
In Duration: 223
Exh dur: 215
Chuck
83 Kiln Red 928S (Now Running)
Specs on 80 Euro cams:
In lift: .396
Exh lift: .350
In Duration: 216
Exh dur: 206
Specs on 84 Euro S cams:
In lift: .472
Exh lift: .432
In Duration: 223
Exh dur: 215
Chuck
83 Kiln Red 928S (Now Running)
Rennlist Member
Joined: Feb 2003
Posts: 29,828
Likes: 218
From: saratoga, ca
I just loving having this informatoin to share!
Yes, the 82 euro cams work on the US 4.7. 243hp at the wheels with the intake.(euro)
i dont know if i would try the 84 S cams. maybe too much lift. hard to say
MK
Yes, the 82 euro cams work on the US 4.7. 243hp at the wheels with the intake.(euro)
i dont know if i would try the 84 S cams. maybe too much lift. hard to say
MK
Originally Posted by cdbtx
I have a 4.7L 83 928S. Has anyone tried installing Euro Cams in the 4.7L before? Have a choice of 1980 Euro Cams or 1984 Euro Cams?
Specs on 80 Euro cams:
In lift: .396
Exh lift: .350
In Duration: 216
Exh dur: 206
Specs on 84 Euro S cams:
In lift: .472
Exh lift: .432
In Duration: 223
Exh dur: 215
Chuck
83 Kiln Red 928S (Now Running)
Specs on 80 Euro cams:
In lift: .396
Exh lift: .350
In Duration: 216
Exh dur: 206
Specs on 84 Euro S cams:
In lift: .472
Exh lift: .432
In Duration: 223
Exh dur: 215
Chuck
83 Kiln Red 928S (Now Running)
Banned
Joined: Jul 2005
Posts: 2,066
Likes: 1
From: Philly
Just looking at the basic paramaters the S cams 'should' work.
The 84 Euro S has higher compression ratio than the US motor, so odds are the US model has plenty of piston clearance for a Euro S cam, though at that point if the belt breaks you no longer have a non-interference motor on your hands....and the bill will be LARGE to repair it.
The 84 Euro S has higher compression ratio than the US motor, so odds are the US model has plenty of piston clearance for a Euro S cam, though at that point if the belt breaks you no longer have a non-interference motor on your hands....and the bill will be LARGE to repair it.
Rennlist Member
Joined: Apr 2002
Posts: 190
Likes: 26
From: Vineland, Ontario, Canada
I also have an US '83 with a 4.7 litre engine (M19). Three years ago I put the cams from a '83 Euro (M11 engine) into my engine. I'm not absolutely certain, but I don't believe I now have an interference engine. I trusted the advice of a couple of folks that these cams would work O.K., and just put them in (well actually I struggled and sweated and cursed while I removed and reinstalled the cam towers while the engine was in the car). I didn't pay any special attention to the relative position of the crank and cams while I was putting things together, and when it was time to put the belt on I just lined up TDC, and then rotated the cams to match from wherever they were. No problems. The effect on the engine was/is quite noticeable. Where the engine began to come "on" at about 3000 rpm before, now it's closer to 4000 and it does seem quite a bit stronger. I really wanted to do some more scientific comparisons of before and after, but my US LHS cam broke before I could make any baseline measurements. I did actually try to find a replacement cam, but when I had no luck I went ahead and installed the Euro cams I already had on the shelf.
That was three years ago. Since then I did manage to get the Euro throttle body installed, but I still haven't gotten around to putting the Euro heads on. At this point the car runs well, and pulls strong.
That was three years ago. Since then I did manage to get the Euro throttle body installed, but I still haven't gotten around to putting the Euro heads on. At this point the car runs well, and pulls strong.
Nordschleife Master
Joined: Sep 2004
Posts: 9,429
Likes: 6
From: Not close enough to VIR.
Originally Posted by m21sniper
Just looking at the basic paramaters the S cams 'should' work.
The 84 Euro S has higher compression ratio than the US motor, so odds are the US model has plenty of piston clearance for a Euro S cam, though at that point if the belt breaks you no longer have a non-interference motor on your hands....and the bill will be LARGE to repair it.
The 84 Euro S has higher compression ratio than the US motor, so odds are the US model has plenty of piston clearance for a Euro S cam, though at that point if the belt breaks you no longer have a non-interference motor on your hands....and the bill will be LARGE to repair it.
The 80-83 Euro S engines are non-interference and Jim B says the 84-86 engines are also non-interference (it's close and probably depends heavily on the 3 criteria I mentioned above). The pistons on Euro S engines are taller and have smaller valve clearance cuts (8cc for 80-83, 2cc for 84-86 as measured by Mark Kibort). If they are non-interference, a US won't even be close with Euro cams and valves. Just adding the cams means even more clearance.
Addict
Rennlist Member
Rennlist Member
Joined: Jul 2002
Posts: 2,693
Likes: 52
From: AZ
I wouldn't take the risk to find out which engine is interference, treat them as if they all are and your bank account will appreciate it.
I can say that in a "hybrid application" - '85 5-liter lock with '83 Euro heads and cams - it is an interference motor. My left bank cam broke and multiple valves were bent. Don't try this.
I can say that in a "hybrid application" - '85 5-liter lock with '83 Euro heads and cams - it is an interference motor. My left bank cam broke and multiple valves were bent. Don't try this.
Nordschleife Master
Joined: Sep 2004
Posts: 9,429
Likes: 6
From: Not close enough to VIR.
The 32V block and 16V heads is obviously interference (higher compression, different CC shape, different valve cut shape). Maybe Mark K or somebody else has the numbers for a 16V US combustion chamber.
