Cam upgrade

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12-26-2003, 02:43 PM

seabeach

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Cam upgrade

Please help me select a cam!

Sonic 35ss.

461 cui.
9.5:1 compression ratio
rectangular port heads 990
weiand team G (looks like stealth) dual plane
Holley 850
Gil exhaust (silent choise).

Prefere hydraulic flat tappered (not roller lifters).

Takes a long time to look at all available cams (crane, comp, isky, ...), give me a shortcut!

/Goran

12-26-2003, 06:32 PM

Ric232

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I'm no cam expert, but I do know that the short riser Gil Magnum Choice exhaust will hold you back (I have the same exhaust). The exhaust flows fine, but I think those risers can only accept very minimal cam overlap (if any), so your duration and LSA choices are going to be limited. If you run a Crane 168731, you would need to have it ground with a 112 or 114 LSA. You might get by with a 168721, but I think that's a significant drop in power from the 731. That said, you should still be able to make a lot of power.

Anyway, as I said, I'm certainly not a cam expert. So I'm very interested to hear what the smarter guys have to say.

12-26-2003, 07:37 PM

Pat McPherson

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Two good hydraulic flat tap cams are the crane cam found in Merc's 370,400,420,425,525... and Edelbrock's torquer cam. I don't have part numbers for you, but they can be found easily on their web-sights.

Both have 114 LSA so the overlap is minimal; there won't be any problems with your exhaust.

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12-26-2003, 09:51 PM

WETTE VETTE

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Erson JB 100 on a 112+4
Specs are 228/235 @ .050" with .540" lift.
I have used this cam on a couple of motors very similar to yours and it works great. Prop for 5200 to 5500 max.
No reversion with stock manifolds! Very good power from 2500 to 5500.

12-26-2003, 10:55 PM

formula31

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I use the Edelbrock torker cam for very similar engines with good success. I have the same exhaust. That cam is 224, 232, .527, .553 on a 114 seperation.