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Tvs 1900 lsj build

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Old 01-24-2012, 01:06 AM
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Originally Posted by Leafydialupking
We shall see. I just looked back at the test and also noticed that he was running a pretty conservative tune, more conservative than the rest with the GMR cams as well. Still, I would expect less drop off with super aggressive cams.
Take a look @ the hotrod mag article with the comp cam grinds they ran. When they ran the tvs 1900 the powerband still kept going past 7k.

I think it's safe to assume the GMRs are more aggressive than the grind used in the article.

Time will tell man; I'm not really to affluent in the whole cam thing. Like the big blower projects I've done in the past, and rediculous meth testings, and fueling dyno tests, this is a whole new subject for me.
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Old 01-24-2012, 01:15 AM
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what are the specs on those cams duration/lift? or were they custom made
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Old 01-24-2012, 01:17 AM
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Originally Posted by tmazSS
what are the specs on those cams duration/lift? or were they custom made
To be honest I don't know

Euthanasia said he saw them somewhere

I believe my GMR cams are regrinds... If Italianjoe or WSFRAZIER chimes in this thread, it was their cams originally. I'm sure they know

I got them for a mere $200... I felt the price justified trying them out.
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Old 01-24-2012, 01:39 AM
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i think they are

int
.441in lift 218 dur@.050 109lsa

ex
.437in lift 220 dur@.050 109lsa

solid lash adjusters are required with i believe .004 in folower to cam clearance
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Old 01-24-2012, 02:22 AM
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Originally Posted by mrbelvedere
i think they are

int
.441in lift 218 dur@.050 109lsa

ex
.437in lift 220 dur@.050 109lsa

solid lash adjusters are required with i believe .004 in folower to cam clearance
here is zzps stuff


Stock LSJ is 196.5/191.7 duration @ 1mm(.039") valve lift and 10.04mm/10.04mm total valve lift. LSA is 107.5

ZZP S1 is 210/206 @ 1mm and 10.78mm/10.69mm lift, 109 LSA
ZZP S2 is 216/218 @ 1mm and 10.78mm/10.69mm lift, 111 LSA
ZZP S3 is 216/224 @ 1mm and 10.78mm/11.10mm lift, 113 LSA
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Old 01-24-2012, 02:54 AM
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no response on the girdle?

l8r,
PD
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Old 01-24-2012, 03:17 AM
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Originally Posted by BlkWdoSS
no response on the girdle?

l8r,
PD
What about it
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Old 01-24-2012, 03:56 AM
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info, design, materials, pics of install? going to be more like a solid deck or slotted for coolant passages. press in or simply rubber hammered in?

l8r,
PD
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Old 01-24-2012, 07:15 AM
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Originally Posted by 100% METH
Area47 posted a nice gain with them without even giving the tune really any beans.

Euthanasia tells me theyre pretty aggressive
They are....

You should be fine man. They make some decent top end power from what I've seen/researched.
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Old 01-24-2012, 09:47 AM
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Originally Posted by Leafydialupking
I havent seen the specs on them but from what I've seen in the cam sticky they're not all that aggressive nor impressive. And when they were designed there was certainly no way that they even considered the fact that you could be trying to cram as much air though the valves as you are, nor how ported you head is/will be. They'll be better than stock, but I bet if you havent bought them yet you can get someone to get you a custom re-grind. I'm thinking something in the nature of the most life your valve springs can handle, with a ramp angle as aggressive as possible to not damage the lifter faces or valve seats, though I dont know enough about cam design to comment on duration or overlap.
lol we dont have lifter faces
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Old 01-24-2012, 10:35 AM
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I just ignored that post
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Old 01-24-2012, 10:43 AM
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Originally Posted by mrbelvedere
lol we dont have lifter faces
If they dont have a face on the top that pushes against something, are they just for plugging oil holes in the head?
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Old 01-24-2012, 10:55 AM
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i lifter face slides against the came lobe also called a flat tappet cam which can also be hydraulic or solid lift
what we have is a lash adjuster it supports the follower and never touches the camshaft the roller follower sets against the cam
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Old 01-24-2012, 12:00 PM
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Right, I always get that jumbled up because it all squeezed in there.
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Old 01-24-2012, 12:01 PM
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Where do you get the tvs 1900? I thought they only had 1320's??
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Old 01-24-2012, 12:09 PM
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Originally Posted by 574
Where do you get the tvs 1900? I thought they only had 1320's??
lol its a one off custom kit
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Old 01-24-2012, 12:39 PM
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Originally Posted by BlkWdoSS
info, design, materials, pics of install? going to be more like a solid deck or slotted for coolant passages. press in or simply rubber hammered in?

l8r,
PD
You will have to wait and see
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Old 01-24-2012, 12:46 PM
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Originally Posted by Leafydialupking
We shall see. I just looked back at the test and also noticed that he was running a pretty conservative tune, more conservative than the rest with the GMR cams as well. Still, I would expect less drop off with super aggressive cams.
I am sorry but you don't have a clue about what you are talking about. He does not want to have to spin this engine to 10k to make peak HP. He cams are plenty aggressive.
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Old 01-24-2012, 12:58 PM
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I realize after seeing the actual specs, but I'm still not used to a 220* duration being considered aggressive.
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Old 01-24-2012, 01:01 PM
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Originally Posted by Leafydialupking
I realize after seeing the actual specs, but I'm still not used to a 220* duration being considered aggressive.
These are the specs on the cams.
Duration @ 0.050" lift is 247° on the intake and 249° on the exhaust
• Maximum lift is 0.499" for the intake and 0.499" on the exhaust
• Lobe centerline is 116°
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Old 01-24-2012, 01:05 PM
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Ok, now that's what I'm talking about. any idea on the normal duration? Because with that kind of 050 lift duration they either have a real damn aggressive ramp angle or are in like the 290+ range for total duration.
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Old 01-24-2012, 01:18 PM
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Advertised duration comes to about 276/279
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Old 01-24-2012, 01:31 PM
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Thats a serious ramp angle. Certainly a solid lifter only cam.
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Old 01-24-2012, 02:12 PM
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Originally Posted by 574
Where do you get the tvs 1900? I thought they only had 1320's??
they use a 1900 on a cadilac
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Old 01-24-2012, 02:14 PM
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Originally Posted by Leafydialupking
Thats a serious ramp angle. Certainly a solid lifter only cam.
lol no not realy it isent but since the gmr cams have such a small base circle the hydraulic lash adjusters over extend and beat themselves to death that is why you need solid lash adjusters if the base circle was the same size as stock or close to it then the stuff would work just fine
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