2008 Silverado, BFD 5.3 cam kit HELP PLEASE

[LDodds1]

Hi, I'm new to the forum, I've been having the most problems with my tune for months..ive owned the tuner but haven't been able to get registered till today. I bought this 08 gen4 Silverado 4.8L in Jan, needed heads ..i bought a rebuilt engine for 2000$ with the bfd cam and heads installed never ran.
found out it was a Gen3, not a 4,so I swapped the top end out, including
heads and cam,(TSP B.F.D. "Chop Monster" 5.3L Cam Specs: 228/232 .629"/.600" 108 LSA 105 ICL)
7.14 push rods
Trunion upgrade kit
double roller timing chain and sprocket,
Melling oil pump
it has new
knock sensors
cam sensor
spark plugs and wires
water pump
gaskets all around
rest is stock
OEM
torque converter
3.73 gears
trans
intake
everything else
I tried tuning it myself and researching ..but I'm still learning ..got a guy in Canada helping but his specialty is Duramax.. The last tune sent had the idle jumping like a jack rabbit and almost dying out, almost over heated and my brake now feel like vibrate and they're hard to push at low speeds.. wasn't able to log that one...I'm adding the last tune i added to and that he did, With the last log in did for both.
please somebody all i wanted was to get it smogged and ride with a nice engine sound, not just a muffler.. God!! was i in over my head
all the parts, The tuner, the credits and tags..im tapped..i would of been at the dyno.. Any help would be greatly appreciated.

[blindsquirrel]

Gen 3 engines have a 24x crank reluctor wheel, Gen 4 ECM can only use a 58x reluctor.

[LDodds1]

So I'm unable to use the cam and heads?

[Tom @ Overdrive]

Heads and Cam are fine. Its the gen 3 24X crankshaft that will not work.

[Alvin]

I'd get rid of that cam. The only thing it would be good for is the sound.

[LDodds1]

That's for sale..Not using none of the bottom end

[LDodds1]

the cams not good?

[LS ROB]

Log Injector duty cycle %, Injector pulse width B1 & B2, Mass airflow, Mass airflow sensor. What injectors do you have? Try this to see if it helps.


Big change.hpt

[chobeeboy]

I'd get rid of that cam. The only thing it would be good for is the sound.

i have the BFD Chopmonster 6.0 cam in my 99 lq9/4l80 swapped Trans Am and had a tuner close to me tune it..... it put down 414WHP and 419WTQ thru the stalled 4l80..... so to say its only good for sound.. i disagree.... however that's not to say there aren't better cams out there. it has good potential for power and makes a hell of a chop. considering the WHP readings the dynojet gave us id have to estimate my engine is putting out about 500 at the crank... Thats pretty good for a cam thats intended for sound/chop.

Tuning for drivability was/has been a real PITA but worth it in my opinion

i currently am gathering parts to turbo the car and when that time comes I'll swap out the cam for one that's more suited for Boost..

lq9 with gen 4 rods,ARP rod bolts , head studs, stock 243 heads, LS6 intake manifold,78mm PnP TB, 1-3/4 LT headers, no cats, SLP LM1 exhaust, 3.73 gears,trunion upgrade, .660 DVS with Titanium retainers.
2004 JASPER 4l80, 35-3800 Roadrunner single disc converter, HD2 Shift Kit

[Alvin]

i have the BFD Chopmonster 6.0 cam in my 99 lq9/4l80 swapped Trans Am and had a tuner close to me tune it..... it put down 414WHP and 419WTQ thru the stalled 4l80..... so to say its only good for sound.. i disagree.... however that's not to say there aren't better cams out there. it has good potential for power and makes a hell of a chop. considering the WHP readings the dynojet gave us id have to estimate my engine is putting out about 500 at the crank... Thats pretty good for a cam thats intended for sound/chop.

Tuning for drivability was/has been a real PITA but worth it in my opinion

i currently am gathering parts to turbo the car and when that time comes I'll swap out the cam for one that's more suited for Boost..

lq9 with gen 4 rods,ARP rod bolts , head studs, stock 243 heads, LS6 intake manifold,78mm PnP TB, 1-3/4 LT headers, no cats, SLP LM1 exhaust, 3.73 gears,trunion upgrade, .660 DVS with Titanium retainers.
2004 JASPER 4l80, 35-3800 Roadrunner single disc converter, HD2 Shift Kit

In your head.. how is that remotely similar to a low compression 4.8L/5.3L heavy truck running this cam?

[Tfoggy]

Cam just isn't right for your application.. 4.8 is pretty small CI unless you want to run rpms way up in a lighter car.
A 6.2 or 6.2 would be workable, but still not the best choice for a heavy truck.
Make sure you have the correct crank reluctor for your ecm and get a smaller cam. Then you'll be happier instead
of a constant fight. I know it's a lot of work but you'll actually have something you enjoy afterwards.
There may even be a market to sell your current cam to someone with a car/bigger engine/ etc
Good Luck !

[Jride1988]

I ran the BFD cam in my 05 rcsb Silverado with 2800 stall for a solid year only adding the cheap 4 hole injectors and ditching the stock 2 hole injectors. Never had any issues with the engine or transmission. I purchased the same cam for my 2005 Tahoe after going with bt4 stage 4 and destroying lifters. The block is at the machine shop now getting redone simply bc there was so much metal in the oil.
Mods list:
Ported and polished 243 heads with dual springs 660 lift
Melling high flow oil pump
Ls1 rockers with CHE trunion kit
Hardened pushrods
eBay long tubes with 3" to dual 2.5" tips with single chamber muffler.
I do believe I'll be going with 3500 stall in the Tahoe. It had a 323 gear stock and I'm swapping 373's into it.