How does it run? Do you wish you would have went with a bigger cam?

 

I have a TREX 242/248 .608/.612 110 in my 408 stroker, and I wish I had gone with a big solid roller cam now.

Infact, I am going to sell my TREX setup and get the solid roller setup when I do my heads.

 

what cam are you thinking about going with? I am going with a stroker also but have no idea what cam

 

I had a 224/224 .539 cam in my 383 years ago. way too small, then a 236/232 .602 112 cam and it was much better, lost nothing down low and made good power. now I'm going with a FMS drag racing cam. MUCH bigger

 

What kind of HP/TQ did that 224 made?

 

448/439 at the wheels with heads that flowed about 270ish... this was through a 3.42 10 bolt, M6 also, no EWP and LS6 intake. 236/232 made 10/10 hp/tq more through the whole range. added better heads, ewp and 90mm LSX and it made about 480 through the 3" duals.

 

How was the driveability between the two cams

 

Call up MTI they normally put small cams in big CI motors and should be able to help you out.

 

I have a 236/242 .598/.610 114+4 in my 408 and I wished I would have went bigger. I have Absolute Speed Stage 2 heads that are choking the motor and also a very restrictive exhaust. I made 454 rwhp and 460 rwtq with this setup. I have been told that some stage 3 6.0 liter heads and true dual should net me about 500 rwhp. If I go to a bigger cam I would probably see 520 rwhp.

 

When I started my 382 project a year ago, my main goal was to have a reliable sleeper that I could drive daily in bumper to bumper traffic on 91 octane, and never have to tear the engine apart each 15K miles. So, big lopey cams and high-compression ratios were out of question.

This is my current setup:

Lunati 382 stroker (10.61:1cr).
Lunati LUN55006 cam (224/.560/112+4).
Custom ported LS1 heads (2.08/1.55, 64.2cc chambers).
Comp 918 springs, titanium retainers, chromemoly pushrods.
SLP oil pump, double row timing chain, 160 thermostat, 85mm MAF.
Federal Mogul bearings.
30# injectors
GM LS6 intake, ported stock throttle body, SLP lid.
SLP long tube headers, high-flow cats, dual-dual (OEM).

Centerforce dual-friction clutch.
SLP HD steel driveshaft.
Moser 12 bolts (3.73).

SLP torque arm.
SLP sub-frame connectors.

Bolt-on, the car made 299rwhp/312rwtq.
Current setup: 399rwhp/411rwtq.

I'm a bit disappointed with the numbers (was expecting 420rwhp/430rwtq), but, overall, I'm really pleased with the car in general. I do have a really good daily driver with a nice idle and excellent street manners. The engine produce 370rwtq at 2500 rpm and the curve is almost linear from 3000 to 5200 rpm. I can run on 91 octane without any pinging and I should pass the sniffer if necessary. Almost no bad smell either, only when the engine is cold. The cam have only .560 of lift and a soft ramp rate, so the 918 springs should last a very long time.

If I had to do it again, I would probably go with a 232/.560/114, ported LS6 heads and a 11:1cr. 112 lsa is still too much lope for me (it's supposed to be a sleeper after all).

Interesting note: The guys at the shop dynoed the car with only the headers, cats and y-pipe and the numbers where almost the same (not even a full 1rwhp/1rwtq difference) over the SLP dual-dual. This catback may be quiet but it seem's to flow damn well!

Here's my dyno graph:

 

That is bad azz tq..

 

have you ever taken your car to the track?

 

No track time yet, sorry! I'm still in the break-in process. Only 2400 miles so far and I'll wait till I get at least 3000.

 

Wow, that is almost exactly what I have! Same Lunati stroker (-8cc pistons), same cam. Heads are JPR stage 1 (2.00/1.60), Isky 295D springs, shaved0.030. LS6 intake, ported TB, Direct flo lid, Mac Headers w/ cat y=pipe.

I made 400RWHP/410 torque when it was tuned with about 300 miles on it. I've got about 12K miles on it now.

It now has FLP's on it. Never been on the dyno since or at the strip (I roadrace it). The car is pretty mild except for the vibration at idle, likely due to the 112 LSA.

Car still is pretty damn quick. Not many cars can pull me on the straights.


George E.