Cam suggestion (patrick G, Predator Help please)
Hmmm. In the idea of not flycutting for this car, keeping the IVC a little later, etc. How about an LSK 227°/227° 110° LSA +0°. That will give you this:
0.01 0.050 0.200
277 227 153 LSK
277 227 153 LSK
110 110 110
110 110 110
28.5 3.5 -33.5 BTDC (- indicates ATDC)
68.5 43.5 6.5 ABDC
68.5 43.5 6.5 BBDC
28.5 3.5 -33.5 ATDC (- indicates BTDC)
110 110 110
57 7 -67 degrees
Not much overlap, but that would idle easier
.
And the overlap is centered.
0.01 0.050 0.200
277 227 153 LSK
277 227 153 LSK
110 110 110
110 110 110
28.5 3.5 -33.5 BTDC (- indicates ATDC)
68.5 43.5 6.5 ABDC
68.5 43.5 6.5 BBDC
28.5 3.5 -33.5 ATDC (- indicates BTDC)
110 110 110
57 7 -67 degrees
Not much overlap, but that would idle easier
.And the overlap is centered.
Thread Starter
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From: IN A VAN, DOWN BY THE RIVER!
sweet 6200 thats right where i want it. this sounds like the cam for me. what would be a good gear for this cam? also would it be a pain to tune, i think i am gonna have Gomer tune it but just curious.
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Joined: Mar 2004
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From: BFE
Originally Posted by 1CAMWNDR
Hmmm. In the idea of not flycutting for this car, keeping the IVC a little later, etc. How about an LSK 227°/227° 110° LSA +0°. That will give you this:
0.01 0.050 0.200
277 227 153 LSK
277 227 153 LSK
110 110 110
110 110 110
28.5 3.5 -33.5 BTDC (- indicates ATDC)
68.5 43.5 6.5 ABDC
68.5 43.5 6.5 BBDC
28.5 3.5 -33.5 ATDC (- indicates BTDC)
110 110 110
57 7 -67 degrees
Not much overlap, but that would idle easier .
And the overlap is centered.
0.01 0.050 0.200
277 227 153 LSK
277 227 153 LSK
110 110 110
110 110 110
28.5 3.5 -33.5 BTDC (- indicates ATDC)
68.5 43.5 6.5 ABDC
68.5 43.5 6.5 BBDC
28.5 3.5 -33.5 ATDC (- indicates BTDC)
110 110 110
57 7 -67 degrees
Not much overlap, but that would idle easier
.And the overlap is centered.
That would be like a TSP 228R on steroids
Originally Posted by PREDATOR-Z
That is a nice no split cam but it would need to be installed with a double roller and degreed to the VEs depicted above. If done dot to dot, I would advance it 2*
That would be like a TSP 228R on steroids
That would be like a TSP 228R on steroids
Originally Posted by PREDATOR-Z
That is a nice no split cam but it would need to be installed with a double roller and degreed to the VEs depicted above. If done dot to dot, I would advance it 2*
That would be like a TSP 228R on steroids
That would be like a TSP 228R on steroids
Originally Posted by JimMueller
Why do you say this cam would need to be installed with a double roller? How do you determine that from cam specs?
TECH Senior Member
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Posts: 14,620
Likes: 17
From: BFE
Originally Posted by JimMueller
Why do you say this cam would need to be installed with a double roller? How do you determine that from cam specs?
1- It needs to be adjustable
2- If a cam is left on a +0 advance, then you want as little slack as possible in the chain to keep those VEs, otherwise with slack you end up retarding.
Double roller fits those criterias.
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From: AUSTIN TX
Originally Posted by PREDATOR-Z
This is gonna be a peaky cam as it is exhaust biased from TDC and with 40.5 IVC it will have a early peak around 6000 or so.
I would keep it on a XE-R exhaust lobe, like this:
227/232, .639/.595 110+2 LSA
I would keep it on a XE-R exhaust lobe, like this:
227/232, .639/.595 110+2 LSA
227/234 .639/.598 110+2
Should be here this week with a set of PRC 2.5 5.3's.
Originally Posted by BOWTIE
That looks a lot like mine...
227/234 .639/.598 110+2
Should be here this week with a set of PRC 2.5 5.3's.
227/234 .639/.598 110+2
Should be here this week with a set of PRC 2.5 5.3's.
And that looks a lot like the cam sitting in my living room along with my 59cc PRC 5.3L heads... 227/235 .644/.650 110+2 ... but I bet you'll have yours installed before I do. I need to spend $1300 on the rear end and $1000 on race tires before mine is going anywhere.
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Joined: Mar 2004
Posts: 14,620
Likes: 17
From: BFE
Originally Posted by JimMueller
And that looks a lot like the cam sitting in my living room along with my 59cc PRC 5.3L heads... 227/235 .644/.650 110+2 ... but I bet you'll have yours installed before I do. I need to spend $1300 on the rear end and $1000 on race tires before mine is going anywhere.
