Then why did it make the least power wow!!

https://gwatneyperformance.com/the-u...dyno-shootout/

 

That’s a great comparison write up.

 

Really was. The the gains from a 92 mm Tb to a 102 were interesting

 

Do you run the CID by chance?

 

No but I wish I could fit one

 

Reveals what's really going on (and how plenum and runner length work)....Holley and CID can be worked further. LOD is great and covers all bases.. Sniper is a factory intake as the Hulk at cheap cost. Holley can also switch tops for 4150 or 4500 tops. Guys have many choices, which is great for us and 1's budget.

But the deal of the day is or was the factory intake after porting. 102 mm vs 92mm John B and a ported factory ls7 intake vs Beck's sheet metal. Once the sheet metal intake got the larger tb 102mm the difference was evident. Those guys do Nice port work with the factory intake,.....102mm would be a nice add

 

That CID is impressive as Hell. Holley Hi Ram 105mm here on my 416 project.

 

The ported stock intake and the FAST 102mm still have the best average power and torque from idle to around 6000rpm.
If I was going on the track I would certainly use the other intakes.

 

I feel like they downplayed the fast 102 gains vs their modified ls3 intake.

 

The low sniper fits easily into an fbody and supports lots of RPM.

 

Big Hammer,
Thanks for posting , great data & very interesting.
The 102 TB gains in both tests were more than I would have thought.
Guess im going to a 102 on mine sooner rather than later.
Any one besides me think that the +24* exhaust split for a NA combo was extreme? 244*/268* on a 108* WOW.
I wonder why they didn't do mid & short runners with the FAST in the 2nd Test?
Have a friend doing a 447" with TFS LS3s & the LOD pretty soon, that will be revealing as well.

 

Not extreme at all for a drag oriented cam. For once we actually get to see an intake test wring the thing out to 8000 rpm that will actually highlight the differences between intake types.

The race runners in the Fast 102 would've been interesting to see on the final test. They had something like 16 or 17 different dyno results all requiring manifold and fuel system changeovers and tuning. I bet they just ran out of time/money.

I bought a CID from GPI after seeing the results. Stepping up from a victor Jr and Holley 750..expecting to pick up 40-50hp. They reliably see ~30hp gain from the CID over a Super Vic.

 

Agreed!!! How many of these tests they lift at 6800 or so and you can see the power was still climbing? At least they let them all peak and carry or fall off.

 

Bit of a one-sided test. Average power/tq readings were almost all done using 5600-7600 RPM.
Not everyone building an LS3 will want a camshaft that large, or care about 7000+ RPM numbers.

It should have been noted that the results should be considered for a serious or even max-effort build.

 

Seen this post on Facebook and followed it the two days that they did the testing. Makes me not wanting to run a hi-ram and go to the LOD intake.

 

Lots of low rpm tests out there. This was finally one for us high rpm NA nerds!

 

I resemble that remark!

 

Lol!

you wanna try my sniper?

 

Aren't his heads ls7?

 

Wow a lot of testing there. They got quite a bot of power out of the LS3 heads there. I see the LS7 test is next.