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Re: need advice on flat tappet cam for roadracing HEMI
[Re: docford]
#1573690
02/03/14 08:15 PM
02/03/14 08:15 PM
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Joined: Jan 2003
Posts: 75,092 A Banana Republic near you.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,092
A Banana Republic near you.
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Quote:
we found out that the STX21 cam that came with the used HEMI that I bought is worn beyond specs, so a set of new camshaft with lifters is on the line.
I'm looking for a cam in the 300° adv.duration and .550 lift at the valve range.
Which cam would you recommend ?
The lifter bores are .907. Should I stick with standard .903 lifters ? Which solid flat tappet lifters would you recommend ?
What do you mean by " worn beyond specs "
What lifters would you use other than what is available? I don't know of any oversize lifters and Chrysler stopped having those available a LONG time ago .
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Re: need advice on flat tappet cam for roadracing HEMI
[Re: MR_P_BODY]
#1573693
02/04/14 05:48 PM
02/04/14 05:48 PM
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Joined: Jan 2003
Posts: 75,092 A Banana Republic near you.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,092
A Banana Republic near you.
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Quote:
With the lifter bores worn that much I would have them bushed
, buy your lifters and have the bushings sized for the proper clearance, plus enjoy a little power increase from having the correct lifter to cam geometry .
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Re: need advice on flat tappet cam for roadracing HEMI
[Re: JohnRR]
#1573695
02/04/14 06:43 PM
02/04/14 06:43 PM
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Joined: Aug 2010
Posts: 208 Munich, Bavaria
docford
OP
enthusiast
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OP
enthusiast
Joined: Aug 2010
Posts: 208
Munich, Bavaria
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Quote:
Quote:
we found out that the STX21 cam that came with the used HEMI that I bought is worn beyond specs, so a set of new camshaft with lifters is on the line.
I'm looking for a cam in the 300° adv.duration and .550 lift at the valve range.
Which cam would you recommend ?
The lifter bores are .907. Should I stick with standard .903 lifters ? Which solid flat tappet lifters would you recommend ?
the exhaust lobe of the #8 cylinder has 0.060" less lift than the others and all lobes are fully shiny accross their whole surface.
Lifter bores measure at .907 and lifters are .902, so standard .903 lifters or COMP CAMS .904 lifters should work
What do you mean by " worn beyond specs "
What lifters would you use other than what is available? I don't know of any oversize lifters and Chrysler stopped having those available a LONG time ago .
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Re: need advice on flat tappet cam for roadracing HEMI
[Re: jcc]
#1573696
02/04/14 06:45 PM
02/04/14 06:45 PM
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Joined: Aug 2010
Posts: 208 Munich, Bavaria
docford
OP
enthusiast
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OP
enthusiast
Joined: Aug 2010
Posts: 208
Munich, Bavaria
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Quote:
Why not just step up to a roller?
because I'd like to rebuild it like it was back in the day
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