My cam only l92 build....475rwhp?
09-26-2012, 07:38 PM
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My cam only l92 build....475rwhp? Recently sold my TFS headed 404 ls2 to build a simple cam only street motor. What do you think?
09 l92 short block 56k
Stock heads milled .047
Stock pistons Flycut on intake side .070-.075
LS9 head gaskets
LS3 intake,90mm TB and 42lb injectors
eBay head studs(if they don't break when torqued then I'm alright)
Cam/spring kit from Brian Tooley Racing
234/248 .612"/.595" 112+4
T56 with RXT twin
1 7/8 longtubes
Hoping for 475rwhp and 10.50s at 130+ in a 4.08 geared 89 Nissan 240sx
09 l92 short block 56k
Stock heads milled .047
Stock pistons Flycut on intake side .070-.075
LS9 head gaskets
LS3 intake,90mm TB and 42lb injectors
eBay head studs(if they don't break when torqued then I'm alright)
Cam/spring kit from Brian Tooley Racing
234/248 .612"/.595" 112+4
T56 with RXT twin
1 7/8 longtubes
Hoping for 475rwhp and 10.50s at 130+ in a 4.08 geared 89 Nissan 240sx
Last edited by csilvers1984; 10-07-2012 at 09:15 AM.
09-26-2012, 07:54 PM
#2
Should make good power with that cam maybe not 475, but close. Did Brian do that cam? Looks like LXL intake and Extreme RPM exhaust.
We had a 2010 in here the other day that made 507/440 with AI chamber work on the 821's and a 231/238 .617/.615 113+2 camshaft and a fast 102.
We had a 2010 in here the other day that made 507/440 with AI chamber work on the 821's and a 231/238 .617/.615 113+2 camshaft and a fast 102.
09-26-2012, 08:14 PM
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Should make good power with that cam maybe not 475, but close. Did Brian do that cam? Looks like LXL intake and Extreme RPM exhaust.
We had a 2010 in here the other day that made 507/440 with AI chamber work on the 821's and a 231/238 .617/.615 113+2 camshaft and a fast 102.
We had a 2010 in here the other day that made 507/440 with AI chamber work on the 821's and a 231/238 .617/.615 113+2 camshaft and a fast 102.
09-26-2012, 09:12 PM
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Thanks! I did turn to Brian for advice on my last build an this one also. He thinks the cam will work well for my intended use. Great knowledge right up the road from me haha.
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09-30-2012, 07:48 PM
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Picked up my cam and platinum spring kit from Brian Tooley Racing this weekend. Also got the l92 heads back from machine shop. Ended up getting them milled .047 for around 11.9 compression. I'm still debating on using ls3 or ls9 head gaskets.....any opinions?
10-03-2012, 09:27 PM
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Picked up my heads from the machine shop and 6 exhaust and 1 intake valves are bent! These budget heads are up to $370 after milling,valves faced,seats worked and 7 new valves...on a good note I picked up my ls9 head gaskets,ls7 timing chain and ls7 cam gear.
10-04-2012, 04:28 PM
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Today I ordered 7 new valves from GM for $128. I was hoping to assemble my longblock this weekend but I'm going to cut valve reliefs on the intake side first. My buddy recently blew a head gasket on his setup which is very similar and had PTV contact on the intake side. His cam is almost identical to mine and his heads are milled .042 compared to my .047. Here's a pic of his motor while changing head gaskets,you can faintly see where the PTV contact was.
10-06-2012, 11:12 AM
#18
Yes it should be noted that the L92 has reliefs... BUT only on the exhuast side for the VVT to retard the cam. Retarding the cam creates PTV issues with exhaust and advancing creates more with the intake. They don't advance the cams in those VVT motors much from dot to dot, something like 7-10* depending on which VVT motor you have, however the camshaft can retard up to around 40+* on some setups creating PTV issues with the exhaust valve on stock VVT engines. The good thing is the piston is plenty thick enough to cut some nice .050-.075" eyebrows in them to gain plenty of PTV!
Silvers you know what I think... Should make some killer power.
Silvers you know what I think... Should make some killer power.
10-06-2012, 08:04 PM
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Yes it should be noted that the L92 has reliefs... BUT only on the exhuast side for the VVT to retard the cam. Retarding the cam creates PTV issues with exhaust and advancing creates more with the intake. They don't advance the cams in those VVT motors much from dot to dot, something like 7-10* depending on which VVT motor you have, however the camshaft can retard up to around 40+* on some setups creating PTV issues with the exhaust valve on stock VVT engines. The good thing is the piston is plenty thick enough to cut some nice .050-.075" eyebrows in them to gain plenty of PTV!
Silvers you know what I think... Should make some killer power.
Silvers you know what I think... Should make some killer power.
On to the build...today I notched my pistons .075ish on the intake side and lapped all my valves. Tommarow I will do a final cleaning and hopefully assemble the long block. Heres a quick pic of the new intake valve reliefs.
