A_VAS

iTrader: (16)

I'd figure about $6K and the LS3 head like your original choice will get you pretty close.

also, you could try to find a LY6 junkyard engine so that you have the rectangle heads to start with
you will be running aftermarket pistons with reliefs, so I don't understand the comments about PTV issues

Callies isn't a 1/2 bad place to get a complete rotating assy either, you can call them direct and order what you need, balanced, ready to rock

Tainted

iTrader: (9)

If he runs valve reliefs the ptv wont be an issue. He just needs to figure out what it would be so he can get the right relief cc

69z28camaro

I talked to a local speed shop and Texas Speed and Performance and they both agreed that it would be better to go with the stock GM LS3 heads rather than a port and polish on the stock LQ4 heads for my application. I'm looking at going with the rotating assembly from TSP and the guy I talked with on the phone from there said I should have no problem reaching 500rwhp with that set up. He said the rest just mainly depends on cam and intake.

LS3 heads are going to cost me around $720
http://www.summitracing.com/parts/na...make/chevrolet

The rotating assembly is going to run me about $2125 with balance
http://texas-speed.com/p-1016-tsp-40...-assembly.aspx
(Lunati crank, Eagle H-beam rods, Wiseco 4.03" -3cc pistons)
The guy I was talking to on the phone at TSP said I should be right around 11:1 compression ratio with that

LQ4 engine I'll be picking up from a local junk yard for $795

CAMAROZ28AQUINO

hey man im doing the same thing you are.. 1969 camaro. bought an lq4 from a junk yard and put an eagle 408 kit in it with ls3 heads and tsp 231/236 cam, t56 6 speed trans. i thought i would be able to do this for 5-6k but its costing me closer to 15k with everything, lots of little things add up but i hope its well worth it. Im putting the motor in within the next couple weeks.

69z28camaro

Nice! The small things adding up don't bother me too much since I can just wait for the next weeks paycheck. It's the big things that cost a couple grand that would put me in a pinch.

What engine mounts did you go with? And what other parts did you get for the swap?

98cobrakiller

im looking into a 408 for my 4th gen. same goal around 500whp although im running a auto ;( so more like 450whp or so after drivetrain loss. i was looking at a ls3 top end verse a ls6 top end.

KingPin1094

iTrader: (12)

well when you say your goal is 500 wheel horsepower, that means the power you want at the wheels. if we were to assume the automatic has 16% drivetrain loss then you would have to have 600bhp.

Im trying to also make 500whp out of my 408. Im gonna use a ~240/~250 cam with about .600 life. With AFR heads. I already have the FAST 92/92 setup. Im hoping with those mods, plus the usually bolt ons, ill have 500whp through the t-56

Tainted

iTrader: (9)

Thats a huge cam id hope you break more than 500 with a 408

Black Sunshine/ 00SS

iTrader: (1)

I've never really focused on the dyno #. If memory serves me right, it was around 435-445 area, which doesn't sound like much, but this was with nitrous converter, t400, steel driveshaft, 12 bolt. Cam similar to what the guy above considered huge.

In the end, you will be off budget, if you do it right. Do it right once.

The combo above put down 10.43 on a nitrous setup, without the nitrous, in a 3550 race weight. You can do the math to see what you could achieve in a NA application, without the nitrous tune, converter, driveshaft, etc. If you aren't into track times, disregard everything I've said.

69z28camaro

Well I found out that the junk yard price of $795 is just for the engine with intake and manifolds. The power steering pump had already been removed along with the alternator. Since I'd only be using the block and accessories it wouldn't be much more cost to just go with everything new. So I'm buying an LQ4 block from summit for around $800.

My question is will this accessory drive bolt right up to the LQ4?
http://paceperformance.com/i-6485405...7-engines.html

z0vette

237's on my 408, 11.5 compression, pat G custom cam, 6-speed made 574rwhp 546rwt

fastvet

iTrader: (2)

Wow, not trying to hijack but what was ur setup? I'm doing a drag build but getting all my info first to hit 550rwhp. Specs?? Thanks.

69z28camaro

I ordered the block from TSP. Next on the list to buy is the rotating assembly which I'm also going to buy from TSP. My question is which crank is better, Lunati or Texas Speed and Performance? Also, since I'm building this from new, essentially, what reluctor wheel should I go with? The block is a Gen III that I got from TSP.

Link for rotating assembly:
http://texas-speed.com/p-1016-tsp-40...-assembly.aspx

leeluther252

iTrader: (17)

The house brand is for about 700hp. Lunati rated theirs at 900 I think, but I've seen it hold up to much more.

69z28camaro

Alright so I received the block this past week (LQ9 Gen III brand new block from TSP) and new stock LS3 heads. I'll be going with the TSP rotating assembly I linked to above. Next it's time to figure out what rockers, valve springs, cam, and timing chain.

Anyone have suggestions to what I should all go with to reach my goal of 550rwhp?

stryker1320

iTrader: (3)

Subscribed...and a TTT for you.

69z28camaro

Bump

anyone?

69z28camaro

Just wanted to update everyone that I just received the TSP 408 rotating assembly. Everything looks great!

Now time to get the Autokraft oil pan and figure out what timing chain to get. Any input??

stryker1320

iTrader: (3)

If you don't mind me asking, which reluctor wheel and crank did you end up going with ?

69z28camaro

When I was first buying the block from TSP I was talking to them about it and since I'm starting from scratch it didn't really matter which reluctor wheel I went with. I have the 24x reluctor wheel.

I chose the Lunati Forged Crankshaft.