| FAQ |
| Members List |
| Social Groups |
| Calendar |
| Search |
| Today's Posts |
|
#81
11-13-2010, 03:05 AM
|
||||
|
||||
Quote:
__________________
 2 sons, 2 Firebirds. 1971 Formula 455, 1972/w 455 HO added.1974 Formula 400 "retired", parts car now. 
|
|
#82
11-13-2010, 01:22 PM
|
||||
|
||||
|
Quote:
__________________
If you cant drive from gas pump to gas pump across the map, its not a street car. http://s207.photobucket.com/albums/b...hop/?start=100 |
|
#83
11-13-2010, 05:03 PM
|
||||
|
||||
|
I went low elevens 11.30s I think even a couple 11-teens with a 284XE - 3300lbs 3.73 JBP 6X heads . 9.5 comp.
It did alright for me - I would have like to compare it against a 290b - I know the 290b would have won out... |
|
#84
11-15-2010, 05:38 PM
|
||||
|
||||
|
I'm certainly having some MAJOR issues with my XE274H cam. I've got it in my 9.5:1 400 and since switching to this cam, the engine runs terrible and overheats in just a few minutes. The engine ran fine with the 290B solid cam, but I felt it lacked bottom end and the cam was simply too big for my 9.5:1 400. So, I switched to the smaller XE274H with hopes of picking up some lowend torque. That's when all heck broke loose. I've been through everything on this car (radiator, flushed the engine block, hoses, valvetrain adjustments, waterpump, timing, and have even installed a new distributer). Results- Nothings working. The car runs hot and detonates really bad after just a few minutes of run time. I even contacted Comp Cams tech people to try to get an answer and the reply I recieved today was that they've been bouncing this issue around the office for days now and nobody can come up with an answer. I've got the engine back apart now and can find nothing wrong with anything!!! Timing dots are lighned up perfectly, but it acts like it's WAY too advanced when running. Even at 32 degrees total, it detonates and overheats. So far, I really HATE this cam.
|
|
#85
11-15-2010, 05:56 PM
|
||||
|
||||
|
dot to dot? did you degree the cam to see if its correct?
__________________
1970 Bonneville Convertible |
|
#86
11-15-2010, 06:45 PM
|
|||
|
|||
|
Bobby,
I was thinking the same thing. It's advanced too far. The cam (in and of itself) won't cause all that. Jim |
|
#87
11-15-2010, 07:00 PM
|
||||
|
||||
|
Raven, You still don't have it fixed? Degree it already, LOL!
__________________
I could explain all this to the girl at the parts store, but she'd probably call the asylum. White '67 LeMans 407/TH350/Ford 3.89... RIP Red '67 LeMans. 407/TH400/Ford 3.25 |
|
#88
11-16-2010, 04:59 PM
|
||||
|
||||
|
I know, I know, degree it!! lol... I've been checking into it and it looks complicated (and it's something I've never atempted before either). After seeing all of the bad feedback on this cam, I'm not sure it's worth the aggervation. From what I'm gathering from this thread, even if I degree it and get it correct, it's still not gonna run like I'm wanting. It would be like trying to polish a turd. lol... I'm kind of in a spot now where I'm trying to decided what to do next. I could degree the cam and HOPE it will fix the issue and run decent enough to make me happy. I could put my 290B solid back in and live with the lack of bottom end, OR get another cam (again). I'm telling ya guys, I'm SO sick of working on this car (and especially sick of replacing cams). At the moment, it's all apart and sitting in the garage, so it's whatever I wanna do I guess. Right now, I wanna set it on fire and watch it burn.
|
|
#89
11-16-2010, 05:26 PM
|
||||
|
||||
|
Quote:
But do please degree it. It's really not that hard at all,it just requires some specific tools to do. All cam installs should be degreed.  FWIWBret P. |
| Reply |
|
|
The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.
Linear Mode
