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| FordFairmont |
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Posts: 6113 Joined: 8th May 2007 |
Well after selling my Wade cam and driving around a week on the stock cam, im kicking myself and cant believe how much power ive lost, so ive ordered another 977b cam but at the same time i thought i'd get the specs changed a little and see what happens
The normal Lobe separation for the 977b is 112, but after reading up on cam basics im getting the profile done at 110 The 977b idle was pretty stock so less lobe sep. should make it more cranky. Also tightening up LS will bring on the peak torque quickly in the cam's power range, more abruptly and peak out earlier. If i remember correctly the 977b starts making power around 2800rpm........ stock cam is around 2300rpm Whereas a higher LS will have the torque spread out in the cam's power range and good for upper rpm. So basically im hoping for a high-ish lift cam that has good midrange torque, tough idle and power comes on fast Will post some feedback when the cam arrives 
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| frankieh |
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Thats interetsing.. tell them to save the spec.. if it's a goodun.. I might go one too...
I miss the days of rough lumpy idles... my 351 shudders like two puppies under a blanket whe it's idling..
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| nic92 |
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sorry to bring up an old thread, but how did this end up?
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| GeZza200 |
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nic92 wrote: sorry to bring up an old thread, but how did this end up? haha good find i'm interested as well
_________________ EL Futura: CVE head, Wolf V500, ICE Ignition and Coil, 36lb injectors, Walbro 255lb, Paci comps, 3" exhaust, T5, Harrop Truetrac with 3.9s. Now with 198.9rwkw, (~185rwkw and 13.80 @99.1mph) with more power to come |
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| FordFairmont |
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Posts: 6113 Joined: 8th May 2007 |
lol i cant really remember
nah, the idle was still pretty stock although it was tuned. The power delivery was as expected, it was flat to about 3000rpm, then kicked it abruptly almost like boost The 977b is a great all round cam but dies before the redline. The 1521a has a better top end and pulls all the way, but is very flat in the low & mid range revs I also ended up getting the 1521a done with 110 lobe sep...... now that was a tough idle  heres that cam in another car http://s735.photobucket.com/albums/ww35 ... G_0043.flv |
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| xcabbi |
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Finally an OHC is made to sound better than the almighty crossflow.
Have you got a clip of the 1512a with the standard LSA? Would be interesting to see how that idles. |
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| Mechan1k |
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I miss my CMS Stg 2 cam in my old AU ... would sit at traffic lights and rock from side to side .... the aerial would wobble about. Amusing. Had a nice slow lope to it.
_________________ 04 Territory TX AWD - Winter White - optioned up |
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| phillyc |
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FordFairmont wrote: nah, the idle was still pretty stock although it was tuned. The power delivery was as expected, it was flat to about 3000rpm, then kicked it abruptly almost like boost The 977b is a great all round cam but dies before the redline. The 1521a has a better top end and pulls all the way, but is very flat in the low & mid range revs I also ended up getting the 1521a done with 110 lobe sep...... now that was a tough idle heres that cam in another car http://s735.photobucket.com/albums/ww35 ... G_0043.flv Damn, that is a tough idle! But with 0.524 lift, 217 0.050 duration and 110 lobes you get that!! Basically you had 26 degrees more overlap than a 977B on 112 lobes. Greedy bugger With the LSA at 110, what advance / ICL were you running? What rpm was peak torque and peak power?Going from plenty of reading, it seems adding 10deg overlap increases peak power rpm by 500rpm and reducing LSA 2deg reduces peak power rpm by 500rpm. Basically condensing an increase in power over a narrower range, but punching / revving all that much harder. Was that your general impression? I'm looking at the AU1645A cam which is the AU version of the 977B, and I asked today for the lobe centres to be tightened from 114.5deg to 112deg. Which sounds good to me! Cheers Phil |
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| alfy |
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Mechan1k wrote: I miss my CMS Stg 2 cam in my old AU ... would sit at traffic lights and rock from side to side .... the aerial would wobble about. Amusing. Had a nice slow lope to it. ive got a CMS 3 in my EL, when it idles properly (i still havent tuned it yet) it actually rocks me from side to side in the seat, too bad i have to turn it off in the maccas drive through cos they cant hear me talk into the speaker over the exhaust
_________________ 2021 V6 Manual Amarok - 245kw/750nm - many goodies |
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| rhys.c |
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FordFairmont wrote: lol i cant really remember nah, the idle was still pretty stock although it was tuned. The power delivery was as expected, it was flat to about 3000rpm, then kicked it abruptly almost like boost The 977b is a great all round cam but dies before the redline. The 1521a has a better top end and pulls all the way, but is very flat in the low & mid range revs I also ended up getting the 1521a done with 110 lobe sep...... now that was a tough idle heres that cam in another car http://s735.photobucket.com/albums/ww35 ... G_0043.flv When you say 'that' cam, i assume its the 1521a. Do you have any videos of the 977b with 110 LS before it was tuned? Also seems like you were running the cam in that video through a stock exhaust. |
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| FordFairmont |
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Posts: 6113 Joined: 8th May 2007 |
'that' cam was the 1521a with 110 lobes, in another car
i dont have any vids of the 977b, but i can tell that it sounded stock like most medium sized cams. only cams with around 220+ duration @ 0.050" lift, will have a lumpy idle |
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| rhys.c |
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Is it possible to set up a cam that has a lumpy idle and a powerband that comes in before 3000 RPM?
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| FordFairmont |
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Posts: 6113 Joined: 8th May 2007 |
lumpy idle = top end power
cant have both unfortunately |
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| shav |
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Was the 1521a cam with the 110deg LS running on a stock ecu or modified?
_________________ Cheers |
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| FordFairmont |
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Posts: 6113 Joined: 8th May 2007 |
when it was in my car i ran it with a ChipTorque chip
without the chip the the car wouldnt hold idle at all........ the car in the above video clip im not sure what else he's running |
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