Has anyone used this cam? Thinking about putting it in a lm7 I’m swapping into a 85’ c10. Not terribly concerned with power since it will just be putting around town but curious how it drives and sounds. Can’t really find any specs for it but did find someone that bought it and posted a cam card that has 233/240 .629 .600 and 108 lsa. Seems massive

 

If all you are looking for is the chop chop sound that will do it with that duration and LSA. Inputting those specs into my Cam Motion camshaft timer it shows a massive 20* degrees of overlap which is definitely going to hit a mean lick at idle. With it's intake valve closing at 44.5 it's not building much dynamic compression and will absolutely kill power and torque on a LM7. That 20* degree overlap is going to be a total bitch to live with on the street... I see a lot of fouled plugs in your future lol. There are much better camshafts choices that will give you that sound without killing power. Look for a cam that has a wide LSA with reasonable duration numbers and closes the intake valve early to build dynamic compression.

Cam Motions "Little Chopper" gives you that sound with a more reasonable duration 222/232 108* LSA with 11* overlap closing the intake at 36* degrees. Or the Howards "Rattler" 226/234 109* LSA with 12* degrees overlap closing the intake at 36* degrees. To be honest both of those are a little big for a LM7 unless you have gears and a converter but much more livable on the street than that TSP donkey dick monster.

 

Well it’s only going to get driven but maybe on day a month for maybe 20 miles, and its definitely getting a converter with the new trans. Just trying to weigh my options. I’m not 100% sure that’s the correct cam specs since they won’t list them on the site. Sounds like it’s going to suck to have tuned and to drive with tho which is what I figured.

 

I was also scared of having to run stiffer springs, seems like stiffer springs would break and have more issues I feel like. Says they need 660 springs

 

Have a buddy with a stage 4 cam in a truck he bought, said if he had to do it again he would never have bought it with that but he does love the chop lol

stiffer springs shouldn’t be a problem just get the dual springs

 

Honestly I was looking at the Texas speed 228r cam for a while and almost ordered it but didn’t. Think I’ll go back to that option. It’ll save a little money and probably make better power

 

I went with the 212/218 on my 6.0. Most people go that cam on the 5.3 it does okay in terms of chop and you can help chop in the tune

 

Just get a TSP 5.3L Truck Stage II High Lift on a 111LSA if you want chop with some street manners.

 

That cam is huge for a 5.3, it will be a dog down low even with a converter. The BTR truck cams sound pretty good. I've tuned quite a few little choppers which also sound good.

 

For a stock 5.3 We wouldn't recommend that chop monster. It would have a heck of a chop to it but be a bear to tune. We like RedXray's suggestions. Like he said even those are big.

We understand the want for that lopey/choppy rattle the windows idle. In a stock 5.3, a big ol' bump stick wouldn't be very enjoyable to drive. Even if it's only for short trips it's going to have a lot of character.

Everyone has their own tastes and levels of comfort. A cam we think that would give you that lope but still be street-friendly is the "Lil' Lope" from Cam Motion. Specs on it are .553/.553, 216/224, 108+3 providing 4* of overlap.

We like looking at cams by the valve events which Redxray shed some light on. The idle quality basically comes from the intake valve opening event. The earlier you open the intake, the more air you're taking in on the downstroke (at the expense of idle vacuum). When you start getting around -1* IVO BTDC you'll start noticing a lope in the idle. This "Lil' Lope" has a 3* IVO. That is going to provide a noticeable lope at idle. With some headers and a more open exhaust, it will be even more pronounced.

From what's been described so far this truck doesn't sound like it will be towing or hauling much of anything. It's still a heavy vehicle to get moving and not something we're looking at carrying power out to 7,000 + rpm. This is where the intake valve closing point comes in. This basically sets the "powerband" of the cam. Building compression and torque down low by closing the valve early. Or using inertial charge longer after BDC and closing the valve later to increase power higher in the rpm range. The Lil' Lope closes the intake valve 33* ABDC. For comparison, the TSP chop monster is closing the intake valve at 42.5*. That's using our cam timing calculator and taking into consideration TSP's built-in 2* advance.

Other than IVO and IVC you have exhaust valve opening (EVO) and exhaust valve closing (EVC). We don't need to dive into those for this conversation unless we're asked to. If you want to see more on that check out post 13 in this thread. That OP was looking for something different than you are but this gives some good info on valve events and using them to compare cams.

It's your decision to make we just wanted to provide some input. The Lil' Lope may not have that window-rattling chop but it will have a noticeable lope. At the same time, it will tune fairly easily and have pretty good street manners. Another plus is it will work with budget-friendly .570" lift beehive springs.