Need CAM Guru's opinion!!
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From: Toronto, Ont
Need CAM Guru's opinion!!
My present cam:
GM Part Number (stock in 305tpi 5spd and 350 auto's for 88 and 89.)10066049
Lift: IN.415 Ex.430
Duration: IN.207 Ex.213 117.0
Separation: 117.0
R.arm ratio: 116/-118
What I'm looking at:
Duration @ .050
206 / 212
Lift (with stock 1.5 rockers)
.480 / .487
Intake Centerline 112
Much higher lift but less on the duration side (very little).
let me know what kind of power I can expect out of this cam swap. This is an SLP Comp cam.
GM Part Number (stock in 305tpi 5spd and 350 auto's for 88 and 89.)10066049
Lift: IN.415 Ex.430
Duration: IN.207 Ex.213 117.0
Separation: 117.0
R.arm ratio: 116/-118
What I'm looking at:
Duration @ .050
206 / 212
Lift (with stock 1.5 rockers)
.480 / .487
Intake Centerline 112
Much higher lift but less on the duration side (very little).
let me know what kind of power I can expect out of this cam swap. This is an SLP Comp cam.
Last edited by Steve89GTA; Oct 29, 2003 at 12:17 PM.
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The 1 degree of difference is hardly going to make up the fact that the LSA is lower and it will generate more power. The added lift will add a lot more power as well. I definitely wouldn't worry about that 1 degree.
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From: Toronto, Ont
I just found out that the cam I'm looking at is an SLP 51002 cam. (make by comp I guess).
I can get it for around $100 US new...
Also, I noticed they have two versions of the XR264HR. One has 112 seperation and one with 110. I've read a few place that TPI likes the 112 better for a cleaner idle (no lop)which I really want.
Stock lob seperation is 117 on my cam according to thirdgen.org's cam chart.
Do you think this cam would be too much for a 305, how much power can I expect from the XR264HR and would i pass emissions?
I can get it for around $100 US new...
Also, I noticed they have two versions of the XR264HR. One has 112 seperation and one with 110. I've read a few place that TPI likes the 112 better for a cleaner idle (no lop)which I really want.
Stock lob seperation is 117 on my cam according to thirdgen.org's cam chart.
Do you think this cam would be too much for a 305, how much power can I expect from the XR264HR and would i pass emissions?
Last edited by Steve89GTA; Oct 30, 2003 at 03:36 PM.
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Hawk took the words right out of my mouth! The XR264HR-12 is the biggest cam you could go with, without having to do several more mods. I would still get Comp springs to match that cam. Computer tuning isn't necessary with that cam, but even that wont hurt to do also.
With PROM tuned perfect for it and some nice valve springs, you could expect 25 - 35 hp at the flywheel increase over the stock peanut cam and stock PROM calibration.
Make sure you get the one with the 112 LSA.
It's a decent cam!
With PROM tuned perfect for it and some nice valve springs, you could expect 25 - 35 hp at the flywheel increase over the stock peanut cam and stock PROM calibration.
Make sure you get the one with the 112 LSA.
It's a decent cam!
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