So fun and very informative weekend for me.
I was up in boise helping a buddy test a couple of his own cam grinds and mess around with a couple other things.
First off they guy with the dyno was super knowledgeable. Been doing it a while and his predictions were pretty much spot on. Really enjoyed talking to him about all sorts of cool stuff.
We also found out that stock 317 /243 heads run out of air before most think they do.
We had a pull where our peak hp and torque was 460 for both. Average torque was 433. This is with a cam way smaller than almost anybody else's torque cam. With the bigger cam, which is still smaller by a decent amount, than most companies torque cams we lost power everywhere. Heads were out of air.
That 460/460 pull was stock cathedral port heads. 1.8 rockers. Cam we call " the baby" LS 2 valve springs, 92 mm throttle body, tbss intake and 36 lb injectors. We figured out you would only need 30 lb/hr injectors though. Oh and a good tune obviously.
All of that on a LQ4 120000 mile motor.
On a dyno stand at least I can change a cam in an LS motor in about 35 minutes
. That's about where we got it too. But an hour from a dyno pull is not enough time to let an engine cool to swap em. Burned my hand a touch
Now what really blew me out of the water was the stock motor. Only non stock part we had on it were the injectors ( same 36lb ) and a the same throttle body . Ls2 cam and valve springs. Same tbss intake
That thing made 419 Hp AND 437 lb ft of torque
Dyno time is fun even when it's not your motor. And LS motors rock. Loved not having to mess around with gaskets on the cam changes.
Here in a couple months gonna try to have some ported square port heads to see what the big cam will do
I was up in boise helping a buddy test a couple of his own cam grinds and mess around with a couple other things.
First off they guy with the dyno was super knowledgeable. Been doing it a while and his predictions were pretty much spot on. Really enjoyed talking to him about all sorts of cool stuff.
We also found out that stock 317 /243 heads run out of air before most think they do.
We had a pull where our peak hp and torque was 460 for both. Average torque was 433. This is with a cam way smaller than almost anybody else's torque cam. With the bigger cam, which is still smaller by a decent amount, than most companies torque cams we lost power everywhere. Heads were out of air.
That 460/460 pull was stock cathedral port heads. 1.8 rockers. Cam we call " the baby" LS 2 valve springs, 92 mm throttle body, tbss intake and 36 lb injectors. We figured out you would only need 30 lb/hr injectors though. Oh and a good tune obviously.
All of that on a LQ4 120000 mile motor.
On a dyno stand at least I can change a cam in an LS motor in about 35 minutes
. That's about where we got it too. But an hour from a dyno pull is not enough time to let an engine cool to swap em. Burned my hand a touch Now what really blew me out of the water was the stock motor. Only non stock part we had on it were the injectors ( same 36lb ) and a the same throttle body . Ls2 cam and valve springs. Same tbss intake
That thing made 419 Hp AND 437 lb ft of torque
Dyno time is fun even when it's not your motor. And LS motors rock. Loved not having to mess around with gaskets on the cam changes.
Here in a couple months gonna try to have some ported square port heads to see what the big cam will do
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