Chevelle_LS

So A five years back I put a stock 1998 Ls1 in my Chevelle 1970 and has since then been driving it as is.

A couple of months ago I happend to buy a set of 243 heads from a Ls2 and am now thinking of installning them, but that is were all the questions started.

I want to put in A new cam and do a truninon kit upgrade and maybe change the intake as well. And the more I read up on the subject the more confused I get.

I drive the car long distance to car shows so i dont want it pouring in fuel and I want it drivable for crusing nights.

What cam and intake would you pick? I am at a loss....

In horse power numbers 450 hp?

Chevelle_LS

I was going to get the GM hotcam kit and a Holley mid-rise intake (want it to stay under the hood) until I started to read up on the subject...

Tuskyz28

Contact Pat G.... the hot cam is out of date.... nicer than factory but not as big of a gain as a aftermarket grind will bring to the table. The intake kinda depends on your power goal and your budget..

JoeNova

What transmission?

Chevy Guy

iTrader: (2)

I went with a Texas Speed torquer, the V.2 kit. I think they have a V3 or V4 by now.

I did their cam, springs, pushrods, ported and shimmed oil pump, Yella Terra rockers, FAST 78 intake, LS2 chain, and a two piece timing cover if I ever want to swap the cam again.

Car still gets 25mpg if I'm easy on it and has zero bucking, chugging or, any odd behavior - and sounds evil as all hell.

Chevelle_LS

I have a 4L60E automatic.

Chevelle_LS

NICE! Like the sound!

JoeNova

What are you going for? Sound, power, driveability?

Chevy Guy

iTrader: (2)

Thanks - it's pretty fast too. I'm not a racer by any stretch and I baby it off the line but I've turned 12.1's and the car traps consistent at 118/119 mph.

Darth_V8r

iTrader: (4)

If you are talking 450 flywheel horsepower, very achievable. Plenty of moderate cams out there that will run good and not kill your economy too much.

If you're talking RWHP, don't expect 450 from stock 243 heads and a mild cam. Honestly more in the 400 range.

kinglt-1

iTrader: (26)

Have AI, TEA or TSP CNC those 243's, then throw a mild stick in it with a ported fast intake manifold and you will have a solid 440-450whp combo that drives great and makes power everywhere.

Chevelle_LS

Power and driveability, I think the sound comes by it self if the engine is tuned right.

Chevelle_LS

So what do you guys think of this cam?

216 int./220 exh @50 0.560 int./0.560 exh 114LSA

I am going to be using the new Fitech Ultimate LS induction system that they released at
SEMA this year.

LS1POWAA

IMO, you should go for something a bit more aggressive. I think something in the 225/235ish sounds good for your application. A moderate stall will really wake up your car also with very little sacrifice in driveability.

KCS

iTrader: (20)

I would go bigger with the cam, low 220's I think. Unless you don't plan on using an aftermarket higher stall converter.

As for the FITech thing, those runners look REALLY short on that manifold. Short runners usually sacrifice power in the lower RPM for power higher in the RPM. That's basically the opposite of what you want in a street car. There are a few published tests on the different length runners in the FAST LS3 intake to help illustrate the point.

JoeNova

This is my Go-to cam for 5.3-6.0 engines that want something mild that makes good power.
https://www.summitracing.com/parts/hrs-190245-12

If its already running, why on earth would you go with the FITech?

hot98z28

Look up EPs cam on here somebody got 430 with 243 heads plenty of low end torque.

kinglt-1

iTrader: (26)

Yes a guy made 430whp with 222/226 EPs grind and cleaned up 243's. The 226/230 was a very popular grind 6yrs ago.

Chevelle_LS

Thanks for all the great respons guys!

To answer the question about the switch to Fitech the simple answer is that I have been looking att many other different intakes and I think the price is fair. After looking at several different intakes and what they cost I think this is a good setup.

I now have the original GM harnest that came with the engine and to tune that you have to buy HP tuners or some other tuner progam for like 500+ just for the program and that is not okej in my opinion.

So I think you get a lot of bang for you buck.

I also want every thing to fit under the stock hood of the Chevelle, otherwise I would go with the Holley hi-ries intake.

But as with the cam I am open for all you suggestions!

THX again everybody!

JoeNova

The intake that comes with the FITech is available on ebay for like $220.
Its not exactly the greatest intake for power, either.