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by CamKing
Wed Sep 28, 2022 3:21 pm
Forum: Announcements
Topic: jonescams.com website issues fixed !!!
Replies: 0
Views: 16

jonescams.com website issues fixed !!!

We have been having issues receiving the cam recommendation forms that many of you had been filling out, over the last few weeks on jonescams.com. The problems have been fixed. If you filled out one of our cam recommendation forms, and did not receive a recommendation, please fill it out again, and ...
by CamKing
Tue Sep 27, 2022 1:27 pm
Forum: Engine Tech
Topic: Camshaft lobe design by Billy Godbold
Replies: 30
Views: 1116

Re: Camshaft lobe design by Billy Godbold

vannik wrote: Tue Sep 27, 2022 1:14 pm . Unfortunately Dr Charlie McCartan no longer has time for sales and support.
That's too bad. I wanted to see how well it worked for generating the lobe lift curve from the valve lift curve.
The system we use is accurate, but not the quickest or easiest.
by CamKing
Tue Sep 27, 2022 11:13 am
Forum: Engine Tech
Topic: Camshaft lobe design by Billy Godbold
Replies: 30
Views: 1116

Re: Camshaft lobe design by Billy Godbold

hoffman900 wrote: Tue Sep 27, 2022 10:34 am I think the Blair program tried to be an all in one program and does this as well. I suspect the GT packages to be beyond that.
I wanted to buy the Blair software to see how well it works, but I was told it's no longer for sale.
by CamKing
Tue Sep 27, 2022 10:02 am
Forum: Engine Tech
Topic: Camshaft lobe design by Billy Godbold
Replies: 30
Views: 1116

Re: Camshaft lobe design by Billy Godbold

If some smart guy would only write a follower translation program that would produce valve lift from lobe lift, I would buy him (or her) a beer, and even dinner if it is an her. That's the exact opposite of what we use for design. We design the valve lift curve, and then translate it into the lobe ...
by CamKing
Mon Sep 26, 2022 3:06 pm
Forum: Engine Tech
Topic: Camshaft lobe design by Billy Godbold
Replies: 30
Views: 1116

Re: Camshaft lobe design by Billy Godbold

hoffman900 wrote: Mon Sep 26, 2022 2:23 pm Yeah it appears he’s probably doing his old job but as a contractor (and probably making more money).
I highly doubt he's making as much. The Edelbrock Group doesn't not see the same value in Design and Development as the old ownership did.
by CamKing
Mon Sep 26, 2022 2:09 pm
Forum: Engine Tech
Topic: Camshaft lobe design by Billy Godbold
Replies: 30
Views: 1116

Re: Camshaft lobe design by Billy Godbold

SpeierRacingHeads wrote: Mon Sep 26, 2022 2:04 pm I heard today that Billy isn't at Comp Cams anymore?
He went out on his own, but I think he's still doing some work for Comp.
With how The Edelbrock Group is running things now, I think he saw the writing on the wall.
by CamKing
Mon Sep 26, 2022 12:49 pm
Forum: Engine Tech
Topic: Camshaft lobe design by Billy Godbold
Replies: 30
Views: 1116

Re: Camshaft lobe design by Billy Godbold

Welcome to 1980.

For a top-tier racing engine, if the lobe profiles are not designed for a specific Bore, Stroke, Rod Length, port flow, and valve size, it's not optimum.
by CamKing
Sun Sep 25, 2022 3:21 pm
Forum: Engine Tech
Topic: How much advance for a less than optimal cam ?
Replies: 22
Views: 644

Re: How much advance for a less than optimal cam ?

Quick question as we're comparing a single pattern to a dual pattern cam. Perhaps not easily answered but what is the defining factor for establishing a duration split? I/E ratio? Exhaust system efficiency (as in open headers vs a full system)? Back in the 80's, we used Exhaust to intake ratio, but...
by CamKing
Sun Sep 25, 2022 2:45 pm
Forum: Engine Tech
Topic: How much advance for a less than optimal cam ?
Replies: 22
Views: 644

Re: How much advance for a less than optimal cam ?

Taking all the variables out of this conversation. Let's assume the optimum can for your application is 226/234@.050" on a 110 LSA, with a 106 ICL. Now, assume you have a cam from the same exact lobe family, so the acceleration rates, ramp design, and lift are the same, but it's a 230/230@.050" on a...
by CamKing
Thu Sep 22, 2022 11:56 am
Forum: Engine Tech
Topic: 128 my take, anybody see it like this ?
Replies: 158
Views: 3985

Re: 128 my take, anybody see it like this ?

What's your take on overlap then? Is that a consideration at the forefront? That's in our typical pushrod V8. Overlap is the distance between the intake opening point, and the exhaust closing point. The intake opening point is important. The Exhaust closing point is important. Overlap is just a res...
by CamKing
Thu Sep 22, 2022 11:25 am
Forum: Engine Tech
Topic: 128 my take, anybody see it like this ?
Replies: 158
Views: 3985

Re: 128 my take, anybody see it like this ?

355" SBC 10:1 with ported 492 heads, Performer RPM, and Holley 600. RPM---TQ--BHP 3200--436--266 3400--443--287 3600--445--305 3800--444--321 4000--443--337 4200--440--352 4400--440--368 4600--441--386 4800--441--403 5000--432--411 5200--422--418 5400--412--423 5600--400--426 The cam is 216/220, on...
by CamKing
Thu Sep 22, 2022 11:18 am
Forum: Engine Tech
Topic: 128 my take, anybody see it like this ?
Replies: 158
Views: 3985

Re: 128 my take, anybody see it like this ?

355" SBC 10:1 with ported 492 heads, Performer RPM, and Holley 600. RPM---TQ--BHP 3200--436--266 3400--443--287 3600--445--305 3800--444--321 4000--443--337 4200--440--352 4400--440--368 4600--441--386 4800--441--403 5000--432--411 5200--422--418 5400--412--423 5600--400--426 The cam is 216/220, on...
by CamKing
Thu Sep 22, 2022 10:03 am
Forum: Engine Tech
Topic: 128 my take, anybody see it like this ?
Replies: 158
Views: 3985

Re: 128 my take, anybody see it like this ?

355" SBC 10:1 with ported 492 heads, Performer RPM, and Holley 600. RPM---TQ--BHP 3200--436--266 3400--443--287 3600--445--305 3800--444--321 4000--443--337 4200--440--352 4400--440--368 4600--441--386 4800--441--403 5000--432--411 5200--422--418 5400--412--423 5600--400--426 The cam is 216/220, on ...
by CamKing
Tue Sep 20, 2022 10:09 am
Forum: Engine Tech
Topic: 128 my take, anybody see it like this ?
Replies: 158
Views: 3985

Re: 128 my take, anybody see it like this ?

digger wrote: Mon Sep 19, 2022 8:48 pm There is nothing that says a formula must be accurate in order to be classified as a formula.
Um......OK
by CamKing
Mon Sep 19, 2022 12:33 pm
Forum: Engine Tech
Topic: 128 my take, anybody see it like this ?
Replies: 158
Views: 3985

Re: 128 my take, anybody see it like this ?

How about the 128 rule in it's most directed application? That would be a 10.5:1 SBC with a 2.02" intake valve (so looking at an average CoD) and 350 CID. The objective is maximum torque as observed on an engine dyno. No area under the curve etc. Just maximum output. EDIT: That question is probably...