355 LE Dyno tune this Friday...Guess my numbers
#196
I guess that's because you like to see it centered. I chose 7.200, which are the ones that were in it on the first page. I can't think of a reason why the pushrod length was responsible for your guideplate damage??
#197
You lost nothing as far as lift and duration by switching to the proper length pushrod
#198
I was told this by some other guys in this thread as well as in some of the links I attached above.
#199
Well they told you wrong. The only way that you could possibly lose any lift and duration from a shorter pushrod is if you rocker arms were not adjustable. But they are, so that solves that.
#200
You lose lift with the wrong PR because the rocker is moving ACROSS the valve stem instead of pushing it down. That's why you want the narrowest sweep you can get.
You want it pushing down as much as you can.
You want it pushing down as much as you can.
#201
Ahhh...I see what your sayin Whatever you lose from that can't be much at all though. It probably cost more horsepower from the added friction than it does from loss of that tiny amount of lift and duration.
#203
Yes sir, I agree
And mine IS right...7k shiftpoints with BRE's (or should I say comp's) aggressive lobes on 918s here it slows down if I shift at anything less than 7k, so I'm pretty confident that I'm not floating any valves So far so good anyways, but I keep a close eye on everything because of how aggressive the lobes are...
And mine IS right...7k shiftpoints with BRE's (or should I say comp's) aggressive lobes on 918s here it slows down if I shift at anything less than 7k, so I'm pretty confident that I'm not floating any valves So far so good anyways, but I keep a close eye on everything because of how aggressive the lobes are...
Last edited by Colin91Z; 04-02-2008 at 03:56 PM.
#204
this is off advanced inductions website in their cam section with cross referencing their grinds to other manufacturers.
http://www.advancedinduction.com/AiProductsCK.html
Comp 224 / 230 HL - .605/.598 - 107 LSA CompCams Lobe #'s - Intake: 3192 Exhaust: 3111
In recent years, some self-proclaimed "valvetrain gurus" online have aggressively marketed cams utilizing lobes from one of Comp's most aggressive lines - the "3100" Xtreme Energy Series. While they will typically run well initially, the irresponsibly aggressive lobes tend to quickly fatigue even the new ovate beehive springs in only a few thousand miles. As the spring loses both load and rate loss of valvetrain stability occurs lower and lower in the RPM range. Typical symptoms are loss of power & "missing" above 6000rpm. Left unaddressed, this ultimately leads to spring failure or piston to valve contact. For comparable output without sacrificing longevity, we would recommend either our 226/234 or 230/238 grinds.
http://www.advancedinduction.com/AiProductsCK.html
Comp 224 / 230 HL - .605/.598 - 107 LSA CompCams Lobe #'s - Intake: 3192 Exhaust: 3111
In recent years, some self-proclaimed "valvetrain gurus" online have aggressively marketed cams utilizing lobes from one of Comp's most aggressive lines - the "3100" Xtreme Energy Series. While they will typically run well initially, the irresponsibly aggressive lobes tend to quickly fatigue even the new ovate beehive springs in only a few thousand miles. As the spring loses both load and rate loss of valvetrain stability occurs lower and lower in the RPM range. Typical symptoms are loss of power & "missing" above 6000rpm. Left unaddressed, this ultimately leads to spring failure or piston to valve contact. For comparable output without sacrificing longevity, we would recommend either our 226/234 or 230/238 grinds.
#205
this is off advanced inductions website in their cam section with cross referencing their grinds to other manufacturers.
http://www.advancedinduction.com/AiProductsCK.html
Comp 224 / 230 HL - .605/.598 - 107 LSA CompCams Lobe #'s - Intake: 3192 Exhaust: 3111
In recent years, some self-proclaimed "valvetrain gurus" online have aggressively marketed cams utilizing lobes from one of Comp's most aggressive lines - the "3100" Xtreme Energy Series. While they will typically run well initially, the irresponsibly aggressive lobes tend to quickly fatigue even the new ovate beehive springs in only a few thousand miles. As the spring loses both load and rate loss of valvetrain stability occurs lower and lower in the RPM range. Typical symptoms are loss of power & "missing" above 6000rpm. Left unaddressed, this ultimately leads to spring failure or piston to valve contact. For comparable output without sacrificing longevity, we would recommend either our 226/234 or 230/238 grinds.
http://www.advancedinduction.com/AiProductsCK.html
Comp 224 / 230 HL - .605/.598 - 107 LSA CompCams Lobe #'s - Intake: 3192 Exhaust: 3111
In recent years, some self-proclaimed "valvetrain gurus" online have aggressively marketed cams utilizing lobes from one of Comp's most aggressive lines - the "3100" Xtreme Energy Series. While they will typically run well initially, the irresponsibly aggressive lobes tend to quickly fatigue even the new ovate beehive springs in only a few thousand miles. As the spring loses both load and rate loss of valvetrain stability occurs lower and lower in the RPM range. Typical symptoms are loss of power & "missing" above 6000rpm. Left unaddressed, this ultimately leads to spring failure or piston to valve contact. For comparable output without sacrificing longevity, we would recommend either our 226/234 or 230/238 grinds.
Just pulled both beehives off of #1 cylinder. Seat pressure is 115@1.775 and 120@1.750 for the intake valve. Seat pressure is 130@1.775 and 135@1.750 for the exhaust. The springs have less than 2K miles and are junk just like blue said.
Also just found out that the Comp 921 dual springs will not fit the LT1 heads without machining the guides to .500".
Wont be racing this weekend.
Looks like I need the LT1 Patriot dual spring kit. Anyone have a part number for this and where do I get them?
#206
How ironic that I follow up Blue's reply with a status on my PAC1218 beehives that are causing my valve float.
Just pulled both beehives off of #1 cylinder. Seat pressure is 115@1.775 and 120@1.750 for the intake valve. Seat pressure is 130@1.775 and 135@1.750 for the exhaust. The springs have less than 2K miles and are junk just like blue said.
Also just found out that the Comp 921 dual springs will not fit the LT1 heads without machining the guides to .500".
Wont be racing this weekend.
Looks like I need the LT1 Patriot dual spring kit. Anyone have a part number for this and where do I get them?
Just pulled both beehives off of #1 cylinder. Seat pressure is 115@1.775 and 120@1.750 for the intake valve. Seat pressure is 130@1.775 and 135@1.750 for the exhaust. The springs have less than 2K miles and are junk just like blue said.
Also just found out that the Comp 921 dual springs will not fit the LT1 heads without machining the guides to .500".
Wont be racing this weekend.
Looks like I need the LT1 Patriot dual spring kit. Anyone have a part number for this and where do I get them?
FWIW my 918's lost 15-30 lbs of pressure in 4k miles.
Last edited by speed_demon24; 04-02-2008 at 07:58 PM.
#207
https://www.patriot-performance.com/...&cat=52&page=2
New springs every oil change. Thats not kewl man.
Last edited by wrd1972; 04-02-2008 at 08:08 PM.
#208
Llyod Elliot said the Patriots would work and they are listed as working for SBC on their site. I hope your wrong. Guides measure .556. Site say seats ID is .565". I think your wrong. Someone confirm this ASAP.
https://www.patriot-performance.com/...&cat=52&page=2
New springs every oil change. Thats not kewl man.
https://www.patriot-performance.com/...&cat=52&page=2
New springs every oil change. Thats not kewl man.
#210
I will call Patriot tomorrow, this makes no sense. According to their sight the set should fit properly. SBC guides are ~.556 and they claim the ID on the seats are .010" bigger. SBC seals are ~.556 or so. Even the site says "No cutting or machining of the stock spring pocket is needed." Could they have sent you more of the wrong stuff.
Lloyd told me he had used them.
Lloyd told me he had used them.
Last edited by wrd1972; 04-02-2008 at 09:50 PM.