Lunati street master

[Silverback85]

I just ordered a lunati street master 276/276 cam For my 350 really like the way it looks specs wise but can’t find anyone that has a lot of experience with it. Has anyone on here had one or know anyone that has? Want to know what they thought of it.

 

[bucket]

I don't have the cam card handy, but I'm thinking that's the same cam I put in my Impala's 327 in the late 90's. I've had no gripes about it.

 

[Silverback85]

How does it sound? Part of the appeal of it to me was supposedly having a Lopey idle with an rpm range starting lower. Seems like a good option for a truck that I’m not gonna spin to 6 grand

 

[bucket]

It has just a very minor lope from what I can remember. I haven't driven the car since '06 or '07. With duals and glasspacks, it was ALWAYS getting compliments on the sound.

 

[Silverback85]

Yea that’s kinda what I want just enough of a difference to make someone look twice

 

[bucket]

Well I don't know where my cam card is, but I pulled out an old Jeg's catalog and realized I didn't even buy a Street Master, it was actually a Bracket Master II, lol. So it was a different cam from yours. It seems Lunati must have revamped their line because the part numbers and specs online (at Jeg's) don't jive with my old catalog.

Summit does still have a listing for the one I bought, but it's not available anymore.

https://www.summitracing.com/parts/lun-00016lk

 

[Silverback85]

Oh well lol spec wise seems pretty close to the one I’m looking at though so they are probably similar

 

[MikeB]

If your main things is a lopey idle, then that cam should do it. It's similar to the old 350hp/327 cam but with a tighter LSA for engines with lower compression than 11:1.

What's your static compression ratio? I'm guessing the cam would like at least 9.5:1. With less than that, your lope (misfires) would be more noticeable, along with loss of low RPM torque.

I see where Lunati says the cam's RPM range is 1000-5500. Interesting, because the typical flat tappet cam has somewhere around a 3000 RPM power band. I'd guess this one is closer to 2500-5500 than 1000-5500.

 

[Silverback85]

Yea that’s my kind of my main thing is to thump a little it’s a 3/4 ton 4x4 truck so I’m no super worried about making a ton of power it’s not gonna be a race truck just would like it to sound good and some get up. I’m gonna guess my compression ratio is pretty close to that

 

[QBuff02]

not exactly apples to apples, but I installed the big block version of this cam in my friends 454 last summer. It has a mild/decent lope at idle (roughly 750-800rpm) and makes very good useable power through the range. Quite respectable actually. I replaced a junk Comp thumper cam of roughly the same size/duration and the Lunati cam definitely makes more power and pulls better than the one we took out of the engine! Sure it doesn't have the same radical sounding idle as the thumper cam, but after just a cam change and now squalling the 33" tires on dry pavement under hard acceleration in a '78 K30 is all the proof I needed to know that it was a much better cam than the comp.

 

[hirschdalechevy]

Mike b said it right at least 9.5 to 1, that being said I see there is two versions of that cam.

#301a7 which has a 114 lsa

#10120316 which has a 110 lsa, hope you got this one.

I will add that my 9 to 1 vortec engine has a

215 @ .050 intake duration
223 @ .050 exhaust duration
.473/.473 lift
108 lsa
hydraulic roller cam.

This cam pulls hard from 2,000 up, the idle sounds good, (noticeable) but not choppy at all and that is with a 108 lsa.

The cam you picked has a 221 @ .050 .454 lift on a, (hopefully) 110 lsa and it should give you some of the sound you want but it my be a pig if you dont have the compression to go with that 221 duration in a k-20 pickup.

Just some more info.

Back in the day when I was young and broke most of the time, me and my buddies would throw together cheap 350's for our truck's and we always wanted drag car sound at idle and still have a strong, (torque), truck engine. The key was cheap flat top piston's, (sometimes dish) , double hump heads , thin head gaskets and our two go to cams with a tight lsa. but not to much duration as to not kill low end torque in what I call a lower, (9ish to 1) compression engine.

Crane # 10017

218/218 @ .050 duration
.450/.450 lift
106 lsa

or

Isky 264 mega

214/214 @ .050 duration
.450/.450
108 lsa.

Both are great cams for torque, (on the cheap build) and they both had the mean choppy sound at idle, (especially the crane), nasty at idle and pulled hard threw the mud and such with big tire's. The key was the shorter duration, (keep the torque down low) and the tight lsa. , (more over lap). But you do pay a price, harder to dial in the carb. and less vacuum. If you have a 10 to 1 plus engine then its a whole new ball game then.

I once tried the L79 327/350hp. cam from wolverine blue racer.

221/[email protected]
.447/.447 lift
114 lsa.

It sounded ok,(nothing close to the crane or the isky) and it pulled ok but not great, (not enough compression). It came out in a short amount time
but I did give it to a buddy and he put it in a 10.5 to 1 350 in a nova and it got with it. Even in the nova, the car hauled ass but didn't have really a mean idle sound.

There are much better cam's today but I like the old tight lsa. cam's, they are just mean but they are not for everyone.

 

[Silverback85]

It is the 110 lsa and my motor does have flat tops with vortec heads so should be a pretty decent motor once o get it together I will let you guys know how it went thanks for the feedback!

 

[Raider L]

@Silverback85,

I have a Lunadi cam in my 350 but it's the High Efficiency cam which is the group before the group yours is in. My Lunadi catalog my be outdated, it's from '96. I have the 255-265, 205/215 @ .050 with .427"-453" lift and 112 lobe sep. My catalog shows mine is 1000-5000 rpm. I had a Comp Cam 280-280 , and 230-230 @ .050, .486"-.486" lift with a 110 degree lobe sep. and it had a noticeable lope that sounded great!

If yours is a advertised 277-277, my catalog shows a 275-275 nearest to yours it has a 225-225 @ .050, .477"-477" lift with a 108 lobe sep. it ought to have a nice lope to it. And it should have good low and mid range torque you'll like. It will definately wake that vortec up!