INhondo
Member
Via Google I found out some information on the above camshaft but no cam card. LSA of 107 degrees. I'm going to rewatch David Vizard's You Tube video on Cam Cards are wrong to see what's what.
Engle HEV 3945AS Camshaft
- Thread starter INhondo
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Newbomb Turk
Well-Known Member
Can you post a link to that video? I’ve never heard that a cam card was wrong unless it didn’t match the cam itself.
Call Engle and tell him that you don’t have a cam card for that particular cam. He will know what it is. What you are looking for is the intake lobe center line. That is how you install it. He will be able to give you more information on that cam if you ask.
The DV YouTube video talks about ICL, which is correct for your displacement and intake valve size and how this may not match your cam card ICL. There are about 4-5 cam videos on David Vizard’s YouTube channel, they are not hard to find.
The DV YouTube video talks about ICL, which is correct for your displacement and intake valve size and how this may not match your cam card ICL. There are about 4-5 cam videos on David Vizard’s YouTube channel, they are not hard to find.
What video is that?
Newbomb Turk
Well-Known Member
I asked that and was told to go look it up.
OldmanRick
Well-Known Member
I saw a post somewhere online that Hughes sold some Engle grinds. Maybe they can give you some info?
For those that are curious, I found a couple of videos on this channel that explain it in greater detail and give the corrections for compression and increased rocker ratio.
Grind Number | Valve Lift 1.5 | Valve Lift 1.6 | Duration at .200" tappet lift | Duration at .050" tappet lift | Advertised Duration (at .020" lift) | Lobe Separation Angle | Opening at .050" tappet lift | Closing at .050" tappet lift |
HEV3945AS | INT .546" EXH .560" | INT .582" EXH .597" | 157 163 | 239 245 | 270 277 | 107 | 15.5 BTC 52.5 BBC | 43.5 ABC 12.5 ATC |
No installed centerline in my old Hughes catalog.If I had to guess it would be 104 or 105.Those smarter than me will chime in.Listed as tight lash 10 Intake 12 Exhaust.
Newbomb Turk
Well-Known Member
I get 103 to 105 ICL
Engle ground hughes cams to his specs, he won’t know about engles propriety cams. He told me he would not grind me a Hughes cam as it was Hughes propriety grind. engles cams were half the price of hughes cams. This was about 20 years ago.
I would have posted a link if I knew how to, computer dumb *** here. But there is a wealth of other information in other videos on his channel not to mention the books he has written. Truely good reads.
B3422w5
Well-Known Member
I believe Engle for a long time made all the cams for Hughes. So, yes all the cams they had were Engle that said Hughes on the box
Now Howard’s makes all of them.
The cam is the OP looks like it would be 239/245@50, probably installed at 103-104.
It’s a solid flat tappet cam. No idea what the lash should be.
First aftermarket cam I ever had was an Engle I bought in 1975 for a 340
David mentions this guy who he has grind custom cams for his project. The prices he mentioned were below 100.00, he can recreate any cam.
DemosCams.com | Home
DemosCams.com | Home
INhondo
Member
INhondo
Member
I found an old page of a Hughes catalog giving what 496 Polara posted plus "valve lash settings: intake .018"-.020", exhaust .020"-.022". Emailed Hughes but no response. I bought this cam and lifter set many years ago from them with a set of their prepped 302 heads. Box says Engle, grind is Hughes part number. Thanks guys, I get 103 - 104 degrees and 104 - 105 degrees installed centerline.
What is the installed IVO point.
INhondo
Member
Not installed yet. What's IVO? Intake valve opening? 15.5 degrees BTC at 0.050" tappet lift. Intake closing at 43.5 degrees ABC at 0.050" tappet lift. This is per Hughes catalog page.
Dale Davies
Well-Known Member
DV is more talking about LSA which is a different matter to ICL. DV's formula indicates the starting point for the LSA for best torque across the RPM range. This uses the displacement of one cylinder and the effective valve seat diameter (intake valve diameter × 0.91). ICL is a matter of whether the cam is installed straight up, advanced or retarded.
David disagrees with those that arbitraily assign an IVC point. Use DV's formula for inline valve heads to get the LSA correct and then adjust duration to determine overlap which controls idle quality. For high CR and fast off the seat valve action the LSA is adjusted a bit. DV has a newer video out that shows the differences between LSA's of 104°, 106°, 108°, 110° and 112°, on one engine. As his video demonstrates, chosing a cam with the LSA a degree or two tight will lose a bit of torque, but chosing the LSA a degree or two wider loses more torque. And this is across the power band.
I bought a hydraulic cam from Engle to install in a 351W. Short duration for mileage. I figured I wanted a 112° LSA because that is what all the "smart guys" were saying. The cam tech sent it ground on a 109° LSA and told me it would have better torque. It ran real nicely. When I sold the car, a friend talked the buyer into rebuilding it to install in a 1948 Mercury 1/2ton. I drilled a 2 × 4 to put the lifters in to keep in order and kept the cam. I will install it in my 289 using LS 1.9" intake valves. Formula says to use 107° LSA but with 11.5:1 CR and 1.72:1 Scorpion rockers, the ajustment should be close to 108° to 108.5°. Close, and I save on the costs of a cam and lifters.
INhondo
Member
I guess I'm a little slow in my thinking. I sent this to Hughes and they did contact me back and he said, "follow the cam card". "Stay off the Internet" when I mentioned installing @ 103-104 degrees and 104-105 degrees.
Well, this looks a lot different than the cam card with an Erson Cam I have on hand. So, I'm guessing he's recommending installing @107 degrees. I'm going to start assembling this engine soon but I'm going to buy a true roller timing set with multiple keyways on the crankshaft pully to hedge my bets.
| Grind Number | Valve Lift 1.5 | Valve Lift 1.6 | Duration at .200" tappet lift | Duration at .050" tappet lift | Advertised Duration (at .020" lift) | Lobe Separation Angle | Opening at .050" tappet lift | Closing at .050" tappet lift |
| HEV3945AS | INT .546" EXH .560" | INT .582" EXH .597" | 157 163 | 239 245 | 270 277 | 107 | 15.5 BTC 52.5 BBC | 43.5 ABC 12.5 ATC |
Well, this looks a lot different than the cam card with an Erson Cam I have on hand. So, I'm guessing he's recommending installing @107 degrees. I'm going to start assembling this engine soon but I'm going to buy a true roller timing set with multiple keyways on the crankshaft pully to hedge my bets.
Dale Davies
Well-Known Member
Depends on the grinder and how much advance they build in, but most street applications respond well to 5° advance.
340six
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I used Engle for a long time before Dave sold them. At the start Dave had Engle make his cams. A product they allready produced. But after some period of mass marketing , Dave's hat got big. He told Engle he wanted to be "it" Period! (IE) If he continued to buy from Engle for his private label, he was it Period. In other words Engle would not be able to grind them for themself for sale to others.
At that point Engle said nope. It was infact Engle grinds. They had those grinds before Dave.
Dave then got someone else to grind his private label cams. But were now Slightly diff profiles. Is it the
Old Engle - Hughes cam or new grinds they offer now?
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