96 lss-10

I am building an LS-1 for my s-10. It will be a semi daily driver. I have bought a used vic jr that was never installed and an msd 6010 with harness that was never installed. The cam I want to go with is 231/239 duration at 0.0050, lift is .617/.624 with 1.7 rockers on 113lsa. I am using a tr 6060 6-speed. The power band showes to 2000 to 7000 rpm's. What do you guys think?

xpndbl3

iTrader: (23)

sounds good to me, get a 750 or 850 double pumper and have at it.

tennerv8

iTrader: (7)

Are you building a 6.0 or a 5.7 or a 5.3?

NemeSS

iTrader: (127)

What size engine?

96 lss-10

Sorry. It is 5.7L. Is there anything I can do to move the horsepower down the rpm range.

xpndbl3

iTrader: (23)

sure run less cam, but then it will make less power

topbrent

iTrader: (1)

If it were me, I would tighten the lobe separation for more midrange punch. Something like 110LSA installed at 106.

You will need to check piston to valve clearance.

jc98ss

iTrader: (13)

this....110LSA

96 lss-10

I might have to do a custom grind then. I did not see any with 110lsa with those specs. Will the vic jr kill my cruise speed with the intake making its power at over 3000 rpm. Will a spacer on the carb help.

Pop N Wood

iTrader: (1)

Tough question. That is pretty good sized cam. I don't think the vic jr. will do anything that the cam didn't already accomplish.

I've been reading cam posts for the last few weeks trying to figure out what is reasonable for a light weight street car. Hard to get a definitive answer cause people all look at it differently. Like one guy said, it is sort of like arguing whether a chick is hot. Depends on what you are use to I guess.

speedtigger

iTrader: (16)

I think this depends on you. Some of us might drive that thumper every day with a huge smile on our face. Others might be beaten down by the mileage, lack of low end torque and bucking at a low RPM cruise. Just depends on who you are and how you drive.

Pop N Wood

iTrader: (1)

Do you think it will be that bad? ZONES89RS is running a TRex cam so I did a search and found an old-old thread about it. If I got the right one, the TRex cam is 242/248 duration, 0.608/0.612 lift on a 110° LSA. So big *** cam. The thread started out with people bashing how badly they thought that cam would work on the street (it was a really old thread, not many guys were running it yet). But by the end of the thread all the naysayers had pretty much stopped posting once more and more guys posted their actual results. The ¼ mile and dyno results were massively impressive, but the EFI guys using them claimed good low end manners and not bad MPG.

Prorac1

iTrader: (4)

A large cam is going to be a lot more liveable with an automatic transmission and higher stall torque converter, than it might be in a manual transmission equipped vehical. So a lot of it depends on transmission, rear gear, and weight of vehical. Eric L

speedtigger

iTrader: (16)

Depends on what your criteria for bad is. I had driven a 250 @ .050" cam around for years in my old 62 Corvette and I smiled every time I took the wheel. It idled at 1000 RPM and would buck like a bronco if I tried to cruise below 2500 RPM. For me, it was part of the experience. Others might not want this.

It is also important to note that Fuel Injection fuel delivery and tuning techniques can help tame a big camshaft. I think the OP is going carbureted. And, before anyone claims that a well tuned carburetor can do anything fuel injection can; not in this case. The low RPM reversion in the intake manifold caused by long period cam durations causes havoc with the fuel metering in a carburetor. This is worse in open plenum intakes. So, fuel injection has an advantage in taming a large camshaft.

The OPs combination looks excellent to me. Now rather or not it is correct for his desired outcome may be another story. I think he needs to spell out the exact driving and performance characteristics that are most important to him. The answer will be in that conversation.

speedtigger

iTrader: (16)

It will also drink more gas. This may or may not be important to the OP.

ZONES89RS

iTrader: (25)

That grind is smaller than my Trex and i daily drive it with a T56 so you will be fine.

melsie68

iTrader: (8)

My last cam in my 6.0L stroker was 239/243 - .651/.654 - 109LSA installed straight up. It was installed in a bigger engine, but it was a very tame sounding camshaft. As a matter of fact it was probably the smallest cam I had ever run in my Camaro which sees a lot of street miles. I had driven it round trip to work many times; 60 miles each way in the heat of summer and the dead cold of winter. An earlier daily driver SBC set-up was a 388cid with a 5spd and 3.73 gears (equiv. to more like a 4.56 rear where I had a low first and through the traps in 4th). The larger of the cams I had in it was a 260/266 - .630/.630 - 110LSA+4. It was a solid roller but was far more radical and I still drove it all over the place.

The cam you mentioned is small. But, if your set-up surges at low speed just put a lower rear end gear in it and have fun.

96 lss-10

Thanks for all of the input. I think with the 3.73 rear gear I may have a little bucking but that is part of the experience. I am going to stay with 231/239 duration cam.

Pop N Wood

iTrader: (1)

Post an update when you have it running.