2 questions:

what kind of hp gains come from getting a 383? 402?

and

what will the displacement be after 383? 402?
^i heard 383=6.3L, very well could be wrong though

thanks in advance.

 

1) depends...

2)
383 = 6.276 call it 6.3L
402 = 6.588 call it 6.6L
408 = 6.685 I rub in the fact that its a 6.7 to **** off the 402 guys.
418 = 6.849 Round this down to a 6.8 so the 418 guys can't get too far ahead...

 

thanks alot for that.
but whats it depend on? my mods?
right now im bone stock.

 

I thought a 402 was a 6.0 liter

 

A 364 is a 6.0, 400-402 would be a 6.6

 

LS1 Stroker's are so ******* expensive. Only reason why i would never consider one

 

Um not they aren't, 408 shortblock can be found easily for under $4000 including shipping. With a decent set of heads and a good cam thats an easy 500rwhp with almost as much torque.

 

Just got through building my 396 stroker 6.5L (same bore as a 383 but with a 4.125 stroke) and with just 1100 miles on it and an LS6 intake and y-pipe with borla put down 470/446 thats through a A4 3600 stall and 12 bolt
with a little more break in and my 92/92 and duals hoping ot hit the 500rwhp and 480rwtq
I also have a friend with a 422 and he put down 550/504 M6 12 bolt

 

Sorry I didn't post more before, i was on my way out the door. yeah, it would depend on your mods the mods you plan on doing to the new motor and it only gets more complex from there.

What you can expect though is a nice increase to say the least! In general, the larger displacement motors will make more torque sooner and hold on to it, where as the mouse motors will want to be late to the party. Not to throw around a popular phrase but larger cubic inche motors will make "more power under the curve" all else being relatively equal, thus get you from point A to point B faster. The best way to answer your question though, of how much more power will having a larger motor net me over my current setup is to look at other setups. More importantly look at what kind of times they are running at the track and pay attention to their MPH and weight of their vehicle.

To give you a decent idea of what cubes will do, take my odd, stupid *** combo for example. Full weight Z28. It is an Iron 408 with STOCK 5.3 862's on it, cut for dual springs. MAC mids The cam is very baby, not even sure on the specs but it doesnt really hit, (sounds like a stock truck with flowmasters). It might be a TR220, but I don't know for sure. 3.23 gears.

I bought the car this way, got a killer deal on it and an L92 setup is in the works. To date my best pass is an 11.45@117 with a 1.52 60' tranny has a 3500 vig also. This is a great example of what cubes will do with all else being equal. Stock 862's on a cam only car with baby cam, MAC mids and 3500 stall with 3.23's probably wouldnt have a 1.52 60ft nor run 11.45 nor get down to 4 cars at the LSX Shootout. I'm shooting for mid 10's with the new setup, we'll see.

p.s. google calculator is wicked. Need to do a unit conversion? Go to google.com and try typing: "408 cubic inches = ? liters" into the search box minus the quotes. Works with most any unit. Try kPa to psi or psi to bar, etc etc http://www.google.com/intl/en/help/f...tml#calculator

 

Look for the cheapest engine and thats what you get.
I just went over this with a customer who was looking at a bargain short block. Came with a cam for x amount of dollars. Lunati rods and Diamond pistons, sounded great for the price until you see how it was put together. Nothing clearanced, and using small block chevy rods not LSX rods.



My sig series 408 is $4200 with Callies and Wiseco for internals plus shipping.

 

can you gimme a ballpark horsepower gain on this?
lid, pulley, pacesetter LTs, TDs w/ bullets, LCAs, SFCs, ms4, havent decided on the heads. but just throw in a decent, but not really expensive set. and a 383/402 (one each please like xxxrwhp on 383, xxxrwhp on 402)

thanks, all help is greatly appreciated (esp if you can gimme those ballpark #s)

 

Just to many variable for someone to give you an accurate answer. We see anywhere from 500 for a mild setup to 600+ on our 408's. The power level is dependant on your heads and cam.

 

Who builds "your" 408's???

 

Honestly he woud rather remain behind the scenes, this is a special arraingement between him and I. Please respect his wishes I can guaranty there is not a finer builder on this site.

I'll pm you as well

 

Wow 4K? You can get an LT1 383 Shortblock for 1800 Shipped. See my point?

 

im thinking just some average, run of the mill heads(will be a DD). nothing extravagant. that help at all? if not, 500ish sounds perfectly fine with me

 

where can i find this deal? i got a friend wanting to put an lt1 in his 95 v6 camaro.

 

http://www.cpengines.com/lt1_short.shtml

 

that was for my friend but back to my post....
ballpark #s with some average heads??
**im looking for a stroker kit, not a shortblock. thx.

 

Take a look at TSP's website and you can see that you can get a built 408 SB for $3475 before shipping. That an Eagle forged crank, forged Eagle or Scat H-beam rods, and Diamond Pistons. That motor will easily take a 200 shot all day long, and when set up with the right H/C you can easily make over 500rwhp with a 6 speed. Ive seen that setup make big power and run for a long time with no problems. I understand that expensive internals are nice, but for most people that build strokers they really don't need something like a lunati billet rod and custom piston set. I always try and remember expensive internals buys you the capability to hold a lot of power, they don't make the power.