meinersk

Was just on the phone with MAST motor and asked what else can I do to my z06 besides heads and they mentioned they tested msd unported vs fast unported on a 675 flywheel hp ls7 and got additional +20 flywheel hp...Other companies will be testing also, so I will wait for their results..But it sounds good to me..

lt1z

Interesting. Too bad the manifold cant really be portmatched like a fast can as I imagine some will line up better then others depending on the heads or production tolerances and effect the potential gains

meinersk

Well Im waiting for other shops to play with it and see what happens. ported vs ported is all that matters really to me. But even ported fast might not compare..

Fifedogg

If it picks up at least 10 HP/TQ over a ported FAST I will be buying one for sure.

EX1

Peak gains are cool and everything but you need the rest of the powerband.

double06

I agree on the power band and what it may look like. It would be good if it was like 20 hp over a 1500 rpm band and then maybe 10 hp over another 1000 rpm. Based on the Lingenfelter chart it appears equal to about 4,500 rpm and then the delta begins to show between the 2 manifolds. Drivability will be another issue especially down low but we should see a few of these in the next 2 months and can figure it out then.

ZR1X

Too bad it can't be port matched like the FAST? How do you think they used to port match intakesbefore multi-piece composite ones were made. The LS style manifolds locate better than any other past GM manifold. Any one can port match intakes these days.

C6z06man

I've heard the same thing. Curious to see some people's results. Loos like a good piece.

meinersk

I agree.....thought I would say what I was told..maybe some members will wait on msd instead of spending their money now..

lt1z

I guess I should have said as easily as a FAST. Anyway, I have one on order to test. The MSD rep told me they could not have removable runners due to a FAST patent on that design. They would have if they could.

RX-Ben

Mast dyno -

meinersk

I was told 20 flywheel by mast..This looks like more

double06

Looks like about 30 ft pounds of tq and 40 hp peak to peak. The delta starts at about 4,500 rpm with the big difference after 5,500 rpm.

lt1z

So that is an LS7 manifold vs the MSD?

double06

According to the graph sub-names I would say yes.

Da Z06

Real solid gains, no losses down low with huge gains from 4500 up, hell where do I sign!

x88

Don't know about that, graph begins at 3500 and it does appear to have some loss

double06

I do not know at 3500, I can not tell which line is which since they seem to parallel for about 500 rpm.

Da Z06

Correct, we may not be able to make a true assessment of the graph down low since they are the same color. But Ill give 10lb of TQ down low for some 20+RWHP on top any day.

x88

I would agree 10 for 20, but 20 for 20 I am not so sure I would. Hopefully once results start coming in we can get a better idea of what to expect