Originally posted by SuperBuickGuy
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Holley Sniper
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well, I officially call bullshit on these things will run with any cam profile.
Went with around .525 lift, 270 duration on a 114 LSA and the car was sucking vacuum like a new hoover. Ran about 5 seconds and died. Held finger over IAC and it ran better, the thing was just wide open all the time and had nothing to suck. When it did keep running, the headers all started to smoke. AFR was 19 area. So started over to let it learn and it quickly dropped to 13.5.
Of course, haste made waste and I cut the upper radiator hose with the new alternator belt configuration so the night ended without getting her outside. we also moved the temperature sensor to the head, which might have helped, but really tried to limit the changes to learn what worked.
I just wanted to update, let you know I do not feel like a complete failure anymore, but did all this tough stuff and bite on the simple radiator hose, so the idiot is still in place.
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I'm racing my BBC with this cam XR292R 292/298 .666 lift and 110 duration and a Sniper. I wish I could eyeball your setup, but it does work.
WITH THAT SAID, the IAC on mine has been a constant source of irritation because if it isn't exercised enough, it will stickLast edited by SuperBuickGuy; April 2, 2022, 08:30 AM.Doing it all wrong since 1966
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Originally posted by SuperBuickGuy View PostI'm racing my BBC with this cam XR292R 292/298 .666 lift and 110 duration and a Sniper. I wish I could eyeball your setup, but it does work.
WITH THAT SAID, the IAC on mine has been a constant source of irritation because if it isn't exercised enough, it will stick
What did you install that cam at?
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well, vacuum seems to help. We were readjusting the rockers, knocked the check valve off the brake booster and it sounded like we cut a tire.
Did find the block hugger headers we have had for 8 years or so, look like 1.5 to 2 1/4 collector, we can probably up that to 3" ball socket and get the O2 sensor about a foot away in stead of the long tube hooker headers. Do the math and 4 1.5 are the same volume as the 3" pipe so maybe enough?
Do not know about just putting it in one tube. Just little advances as we go, trying to let it learn, but first fire up it was popping lean, tried to let it learn on its own but the exhaust was smoking within 3 minutes. I am sure there is a bunch of residue burning up in there, it is getting more of a hollow sound. Went back to new setup and tried to let it learn again but it will not enrichen enough to stop popping on its own, but still hesitates.
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Originally posted by anotheridiot View Postwell, vacuum seems to help. We were readjusting the rockers, knocked the check valve off the brake booster and it sounded like we cut a tire.
Did find the block hugger headers we have had for 8 years or so, look like 1.5 to 2 1/4 collector, we can probably up that to 3" ball socket and get the O2 sensor about a foot away in stead of the long tube hooker headers. Do the math and 4 1.5 are the same volume as the 3" pipe so maybe enough?
Do not know about just putting it in one tube. Just little advances as we go, trying to let it learn, but first fire up it was popping lean, tried to let it learn on its own but the exhaust was smoking within 3 minutes. I am sure there is a bunch of residue burning up in there, it is getting more of a hollow sound. Went back to new setup and tried to let it learn again but it will not enrichen enough to stop popping on its own, but still hesitates.Doing it all wrong since 1966
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Originally posted by SuperBuickGuy View Post
put it on 1,2, 7 or 8. There are some people who run 8 sensors.... one is just fine.
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we were about to try a different intake again when my son decided to look down and see the injectors, two corners were spraying, 2 were dribbling. Put the first sniper back on and all 4 were spraying and guess what, it works again. Just like with the cam swap, super fat at start up again, fuel popping up off the throttle blades, out the rear throttle shaft.
I am seeing a 522-361S replacement available now. Guess we give it a few weeks and see if she finds happiness tuning itself.
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Originally posted by anotheridiot View Postwe were about to try a different intake again when my son decided to look down and see the injectors, two corners were spraying, 2 were dribbling. Put the first sniper back on and all 4 were spraying and guess what, it works again. Just like with the cam swap, super fat at start up again, fuel popping up off the throttle blades, out the rear throttle shaft.
I am seeing a 522-361S replacement available now. Guess we give it a few weeks and see if she finds happiness tuning itself.Doing it all wrong since 1966
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