Recently there was a member that uses the name Pray that had a 416 that made 573 at the wheels, probably the same guy. He had TFS 235, 12 to 1 compression. You can probably find it through the search.

 

Go to Vengeance to get it tune. They take as long as it takes to make sure that the car is right.

 

I live in Texas man. GA is a hike.

I ordered a 416 through Va Speed. It was a hard choice and I had to do a lot of research to come to that decision. But I finally placed the order.

 

I'd like to see that dyno sheet. A 573 RWHP 416 has to be pretty radical.

What intake?

 

Here is the car.

https://ls1tech.com/forums/vehicles-...en-02-z06.html

 

how will a 416 have a smoother idle over a 402?
only way i can see this happening is both motors with the same camshaft.
the inches will "eat" the cam, making it have better manners so to speak.

it can be 4 inches or 900 inches. i dont see the light in your statement.

 

The longer the stroke, the smoother the idle....as I've always understood it.

But how much longer can a stroke possibly be with any stroke/bore combo between a 402 and a 416...not much.

 

Heres my 416 idle with a MUCH bigger cam

 

MUch bigger than who's cam?

 

Than the bloke who is asking on this thread!

 

So do you think a 236/238 600ish 112 cam is too small for a 416? I have an auto.

 

416's generally put down around 480-530. 573 RWHP, I highly doubt that it made that much true RWHP. Maybe on that dyno it did. There's nothing about his build that puts it way ahead of any other 416ci out there, that I can see. 573 RWHP is enough to do alot better than a 10.21. 10.21 only requires about 480-500 RWHP in that car with a good hook.

I'd like to see that car on another dyno. 427 C6 Z06's with ported LS7 heads, cam upgrades and exhaust work and a tune are having trouble making 570 RWHP. There are some that I've seen over 600, but most are in that 570-580 area.

 

402 and 416 both have a 4 inch stroke.

The additional bore will help with any valve shrouding you may have depending on what heads you run.

Go with the 416.

 

For 17hp,I would pay the $400.00. The new fast intake for my L92's will be $1,000 and I'll pay it for 25hp.

 

It was more of a general statement.

402 = 4 bore x 4 stroke

~416 (415) = 4 bore x 4.125 stroke

All else being equal, the 416 will make more torque.

So...............

 

I also assumed it was discussion between a LS2 block versus an LS3 block based motor, different bores same stroke.

 

That nothing. I drove over 1,200 mile one way from MN in a snow storm to make sure that my car will last and make the power it should. I did drive the camaro and when I got hour 1 1/2 out of St. louis my SLP loudmouth exhaust broke and I had to deal with open headers and y-pipe. That Fing sucked

 

I'd bet the great majority of 416-418 are built with the LS3/L92 block. Very few are going to run 4.125 stroke in an LS2 block.

So

 

my 230 114 cam idled smoother than a 222 112 cam. If you want a smoother idle go for the 114lsa

 

It's not entirely a good idea to run a 4.125" on the LS2 block. It has a slightly shorter skirt depth than the LS1 - that's why you see 4.100" strokes in LS2s. A 416 is LS3 based... 4.070" bore.

I'd run the 416 over the LS2 based 402. It'll unshroud the valves more and allow a head like the TFS235 to make a little more power.

A mid 230s duration cam would be pretty mild in that size motor. A cam that would act "cammed" but still be extremely livable would be a mid 240s duration cam and would perform better.