Lost cam
Le Mans Master
Joined: Dec 2006
Posts: 8,837
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Hello guys I did give the cam manufacturer a chance ,and I did not like what I heard so here is the name of the cam company Erson and PBM lifters. Please I am not saying their cams are bad or the lifters are bad, but they did not work for me. One or two people ask so I said it I know some people use their cams and never have any trouble put I did so you judge for yourself . This is going to coat me around $750 plus all my work.
Thread Starter
Intermediate
Joined: Feb 2015
Posts: 41
Likes: 14
From: NC
I was just building a simple street motor and did not see the need for a roller cam also trying to keep cost down. I was thinking a 383 mild cam would be a nice step up some thing around 350 HP and nothing fancy no roller cam not at this power level.
Le Mans Master
Joined: Dec 2006
Posts: 8,837
Likes: 1,028
Just trying to talk you into a new decision, that will increase longevity.
No one puts screens on oil galley drains unless they care a bunch.
1 in 100 cams do this I bet. Feel lucky, or unlucky?
Last edited by Big2Bird; Oct 14, 2019 at 08:59 PM.
Thread Starter
Intermediate
Joined: Feb 2015
Posts: 41
Likes: 14
From: NC
I understand what you are saying, the block was one I had form an older 383 drag motor so I used it for this build. I am not feeling lucky right now. LOL This motor is for my wifes car she is into the corvette I am a chevelle Guy.
Le Mans Master
Joined: Aug 2017
Posts: 8,336
Likes: 2,810
From: Cool Northern Michigan
Still don't know if the cam was at fault here. As mentioned earlier, good probability the oil galley was plugged to one or more lifters.
Le Mans Master
Joined: Dec 2006
Posts: 8,837
Likes: 1,028
After 40 years I learned the more you spend on her, the less they bitch when you do.
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Team Owner
Joined: Oct 2004
Posts: 81,241
Likes: 3,063
From: altered state
St. Jude Donor '05
In understand the appeal of ft lifters (Flat tappet)
call Chris if you wanna source something decent (straub)....Isky/crower may have something. Thing is most out there are junk
call Chris if you wanna source something decent (straub)....Isky/crower may have something. Thing is most out there are junk
Le Mans Master
Joined: Aug 2017
Posts: 8,336
Likes: 2,810
From: Cool Northern Michigan
1tazz,
Just read an article on Summit Racing tech site. It seems that when the SBC blocks went to a roller cam, GM put a "oil restrictor" in the lifter oil galley. The roller lifters do not need as much oil as the earlier blocks with the F.T. cams.
I do not know what year the roller block came out.
I do not know what year your 383 build-up block is.
Just saying . . .
Just read an article on Summit Racing tech site. It seems that when the SBC blocks went to a roller cam, GM put a "oil restrictor" in the lifter oil galley. The roller lifters do not need as much oil as the earlier blocks with the F.T. cams.
I do not know what year the roller block came out.
I do not know what year your 383 build-up block is.
Just saying . . .
Last edited by HeadsU.P.; Oct 15, 2019 at 08:29 PM.
Le Mans Master
Joined: Sep 2001
Posts: 7,739
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From: Unreconstructed, South Carolina
Lifter not spinning ... maybe:
Burr in bore
Burr on lifter edges (banged up in-process or in-transit)
Thick moly paste in bore or on sides of lifter can prevent it from spinning ... long enough for lobe to scuff a bad pattern ...
... moly on face aka foot is Good ... but Not lifter sides or in bore.
Burr in bore
Burr on lifter edges (banged up in-process or in-transit)
Thick moly paste in bore or on sides of lifter can prevent it from spinning ... long enough for lobe to scuff a bad pattern ...
... moly on face aka foot is Good ... but Not lifter sides or in bore.
Le Mans Master
Joined: Aug 2017
Posts: 8,336
Likes: 2,810
From: Cool Northern Michigan
Thread Starter
Intermediate
Joined: Feb 2015
Posts: 41
Likes: 14
From: NC
Dropped cam and lifters off at motor shop Mon and he called today and said there was excessive wear on the fuel pump cam so he is leaning toward cam failure. Cam hardness wrong. Looks like I got a bad cam. He told me this is a dead give away because this eliminates the lifter failure.
Team Owner
Joined: Oct 2004
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From: altered state
St. Jude Donor '05