erson 990 bh cam?????

1962 btop

Well Known Member
Supporting Member 1
I took a part the 409 that I got in november it has a erson cam 990 bh does anybody know this cam and the crankshaft is a 3788072 looked it up is 1961 409 is it rare . also on the back of cam gear looks like it was rubing on back of block thanks jim
 

posi857

Member
Supporting Member 2
Use their inquiry form (e-mail) and supply as much info as you can. They do not offer stock grinds for 348-409 applications. They will provide info on your cam if at all possible. Erson has changed hands several times but has found a good home with PBM. They will help if possible.
 

region rat

Well Known Member
Supporting Member 3
I contacted them years ago before PBM and they didn't have much info on the old cams. I ran a 990=B for years. It was 622 lift and around 277@.050. Centerline was 113. I'd bet the BH is similar. The 990-B was a stone until about 3500. That's when you had to pay attention. Mine ran best when advanced big time . I put it in @ 103.5
 

1962 btop

Well Known Member
Supporting Member 1
thats to much cam for me . I can get a isky z-33 brand new from some one I know is that a good cam
 

409Dave

New Member
I've had my Sig Erson 990BH cam in my 409 since 1964 and it's what really woke up the 409 years ago. Turns out that it has the same specs as the Chevy Z11 cam (remember the 1st 427?) 5.65" lift, 310 degrees duration and 84 degrees overlap.
 

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Don Jacks

Well Seasoned Member
Supporting Member 3
Thank you Mr.Phil.The lobe seperation on the factory Z-11 was in the 113-114 range according to what I've read.
 

409Dave

New Member
I bought my 58 Delray business coupe from a hi school friend in 61 and 11 years ago put a video on YouTube called "58 Chevy 409". It's a drag car I drive on the street, mostly cruise nights/car shows...4.88 gears and race gas make it expensive.
 

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region rat

Well Known Member
Supporting Member 3
That cam card is from a 990BH.
I got a 990bB from Tom Jacobson through Phil Reed years ago ago and it was a great cam.
My specs were 622 lift/277@.)050 and 113 lobe seperation.
I put it in @110 and gave me whiplash.
@3900* it would 60 ft1.46.
Best pass was 11.30/120
I'm gonna put it in a stroker next.
I also have a 990BH but it does have differant specs.
 
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Phil Reed

Well Seasoned Member
Supporting Member 10
After Sig passed away, his son John took over the business. John's passion was VW's. I talked with John several times about making me some 990Bs to sell. Never could come up with the masters.
Later I heard he moved to Australia.
 

region rat

Well Known Member
Supporting Member 3
I found mine but it looks like a lobe is strating to go. They used to weld them up and regrind.
 
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region rat

Well Known Member
Supporting Member 3
My, Bad. The 990 is fine. Ran it in my car for a long time. The 990BH has a bad lobe. If someone has the master, or can digitze it, they could make a new one
 
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