98FiveSeven

iTrader: (1)

Hello,
I am new to the GEN IV type engines and know that some cams can be really finicky with the LS3/L92 heads. The cam mentioned in the title is available locally from a friend. How drive-able will it be in a 11.8:1 408?
I will be running an L76 intake and TSP 1 7/8 LT. a FAST intake is not an option financially at the moment.

That Car will be mainly a cruiser, car show type of car, eventually I will make it back to the strip with it once I get a 9 inch etc So drive-ability will be essential, I want to be able to cruise through the local towns and be able to enjoy it.

GONEB4U

iTrader: (126)

For a cruiser I think that cam is way to big. It will make great HP but I don't think it will be to driver friendly.

edcmat-l1

iTrader: (10)

Depends on how much ugliness you'll tolerate. That cam will be far from "stock" like as far as driveability. It can be tuned OK, but it will be far from nice.

loser98

iTrader: (3)

my 408 has the tsp giant and i wouldnt want to get stuck in stop and go traffic with it. its "driveable" in my book, i drive it all over but i wouldnt go much bigger with something i planned to put miles on.

JPH

iTrader: (2)

I agree with this answer.

1lejohn

iTrader: (9)

It will need gears, with the six speed you'll have bettter rpm control then with an auto. Some serious tuning. Invest in good springs, push rods and lifters.

We are running a 242-250 620's on a 115. It drives good but far from a daily driver. It does'n like to lug in OD.

With the 76 or 3 intake it will make great midrange and peak at 6k. With better intake it should make power to 7k

wildcamaro

iTrader: (15)

thats my def of a donkey dick cam lol good luck taming that!

98FiveSeven

iTrader: (1)

Thats what I originally thought. My inexperience with the larger cube engines and the new style heads made me want to ask. I think I am going to pass on this cam based on response.

Is 500-525 whp a bit of a stretch for a 408 that is driveable. It wont be a daily but I dont want to be fighting the car if I do encounter some traffic. Ill be able to tolerate some attitude (and want a little too) but I dont want a complete unruly cam. I want to enjoy the car and have plenty of fun!

Tainted

iTrader: (9)

theres stock bottom end ls1's making 500rwhp

98FiveSeven

iTrader: (1)

I know this. Been around for a while and have saw the capability of these engines. Im looking for an unadulterated, reliable, driveable, all motor 500-525 whp.

1lejohn

iTrader: (9)

You should be able to make your goal with a slighty small cam. With the extra cubes and the stock 76 intake you'll be fine. The engine should make plenty of torque and power from 3000-6000. The 92 and 3 heads help make good torque along with the stock intake. Call Ed Curtis at FTI to spec you a grind.

blue99fbody

iTrader: (5)

those are the same specs as my cam in my 404 with cathedral port heads. cam drives very well. i ran it with a fast 90/90 two years ago and then with the vic jr and 4bbl tb last year and it drove much nicer with the vic jr. peaks at 6900 and made 522/465 n/a and 770/755 on a 79 jet. i would not be afraid of that cam at all.

5 Liter Eater

iTrader: (5)

When a guy with the same cam in his 700 RWHP elbow intake 404, who is pulling the wheels off the ground in his sig pic tells you it drives well, walk away.

LOL, J/K, I'm just saying that cam (and clutch for that matter) drivability is subjective.

1lejohn

iTrader: (9)

those are the same specs as my cam in my 404 with cathedral port heads. cam drives very well. i ran it with a fast 90/90 two years ago and then with the vic jr and 4bbl tb last year and it drove much nicer with the vic jr. peaks at 6900 and made 522/465 n/a and 770/755 on a 79 jet. i would not be afraid of that cam at all.


What did the car run before and after the intake change? I bet it drove much nicer with the Jr. LOL I thought about going this way with my present combo, but the lose of torque kills the deal for me.

How much street duty does your car see? I like the way my car drives but its for the more hardcore folks on this board. I've gone round and round about driving with drag type shocks and how bad they handle. So I guess the OP has to make his own decision on how much NVH he can stand.

SweetS10V8

iTrader: (4)

WAY TOO BIG!!!

I have had a cam that was way to big and miserable to drive, this will be one of them. Now if you were going to the strip all the time running low 9s or high 8s, maybe this cam would be acceptable.

For a street driven vehicle it is ALWAYS a good idea to error one step too small rather than one step too big. Nothing makes you hate your car more than stalling, no brakes, surging, etc.

I would be around 235/241 @.050 with a 408 street driven vehicle. Trust me, I would happily give up 30hp at 7000RPM, to have a car thats tons of fun to drive and great drivability. You have to be honest with yourself, what percent of the time are you at wide open throttle? Id bet 99% of the time your driving your car and zooming around at 1/2-3/4 throttle, and very little time at WOT on the street.

You also need to know what lobes are on the cam, in the past few years there have been a lot of new lobes that are easier on valvetrain.

blue99fbody

iTrader: (5)

traping 126 to 128/129 n/a did 502/470 with the fast 90/90 and 522/465 with the victor so not much tq loss at all. i drive my car quite a bit its definatly no daily driver but im usually jumping in it and going somewhere 4 or 5 days a week durring the summer. its definatly subjective but ive never had an issue driving with this cam but no it is not near like a stock car

1lejohn

iTrader: (9)

H.mm That gets me thinking again about the Jr. I'm looking to extend the power band out to 68-7k. We are trapping about the same mph and running between 10.7-10.4 depending on the weather etc. I'm making peak power at 5800 and nosing over big time by 6400. At present the car is abeast in the midrange and down low. It is running out of steam at the 1000' mark. It's either change gears or try a different intake. The cam is rated to 6800.

smok'nZ

iTrader: (160)

my 408 w 248/254 drives great in the city but the car is loud 3" true duals w/12" bullets so after 9pm i bet my neighbors hate me. w a catback it might not be so bad

also i have a 102/102 set up going to vic jr style soon

Spectre86

iTrader: (42)

just curious, whats the lift?

LT1Formula007

iTrader: (66)

My old 403 LS2 Stroker had a Thunder Racing 248/254 .615/.623 110 LSA cam in it, and it drove GREAT on the street. I daily drove the car from Spring til Fall for 2 years. I also took the car on several trips, 100+ miles each way and never had an issue with it. It idled perfectly (Very Lopey), But not "once" would it stall out or surge on me. I had a FAST 92/92 Intake, Stock 243 Heads, TSP 1 7/8" Longtubes and their 3" X Pipe TD's, Yank ss4000 stall, Built 4l60e, and a stock 10 bolt with 3.42's for a while. I later went to 3.70's with the new MWC Fab 9, and it tightened the converter up alot, and made it even more desireable to drive.
However, much Larger than that size cam and IDK what to expect. I would say your gonna lose a little more down low, but nothing gears can't help with. I do wanna say that at 50 mph in OD, I would get some bucking... The converter locked up right at 48 mph, and until I reached 55 mph it would slightly buck. At 55mph or higher, it drove damn near like stock and no bucking was there after that.
I was very happy with my cam, and it made awesome power Everywhere.

Just my .02, but I would look into something around my cam specs, or slightly higher, and get a GOOD Tuner! The tune can make or break a cars driveability.
GL

-James