"cam only" horsepower record?
12-24-2009, 04:06 PM
#61
Id say the same but I have seen over 400 with a 847 cam and stock heads/intake, all bolt ons, t56 car. The pistons were flycut and it impala head gaskets, stock 10 bolt too.
But thats a lot of work to fllycut pistons to make power, but to each is own.
But thats a lot of work to fllycut pistons to make power, but to each is own.
12-28-2009, 09:49 PM
#66
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Well it has more power than stock. I have not gone to the track yet. I would say it is putting out 350 rear wheel hp. Maybe a solid 375 hp if I take the rev limiter up to 6100 rpm from 5800rpm.
12-28-2009, 10:26 PM
#68
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Yeah youd really be suprised at how huge the difference is to how a car can "feel" compared to how much power there actually making. The feel of tq can play tricks alot of times.
12-28-2009, 11:21 PM
#69
From personal experience, if you take your car to the track as is, it will run 13's. That particular cam was used by another member here in which the motor didn't even show peak hp at 7000rpm when the car was shut off on the dyno. That is a massive cam for a 350, it needs some serious rpm to make power and run well. Shifting at stock rpm's is really killing the setup. I use to have the cc503 and I shifted that at stock rpm levels, just above, alot above etc. etc. and you would be suprised how much MPH you pick up when shift a car where it wants to be with a particular cam. I was stuck in the 13's with a bolt-on/cammed car when I was shifting it at 5800rpm and 13's in a cammed LT1 is just horrendous. I suggest you shift beyond 6500rpm if you want to take advantage of that cam at all or swap to a more useful smaller cam. Once you put it on a dyno you will see what I mean. I guarantee it peaks significantly higher than where you are currently shifting. Also remember you want to shift beyond peak so were talking atleast 1000rpm higher than your at now potentially. Not trying to be a dick or anything I just wanted to share some wisdom to help you out since I've had a similar experience.
12-28-2009, 11:47 PM
#72
With the stock stall the fastest I went was 12.8 at 110mph with full exhaust + 3.73's additionally. That was when I had it shifting about where it needed to be. I then added a 3600 stall and at the same time I completely fubered my shiftpoints up right before I went to the track that day. Car went 12.60's at 107mph with the tach reading 6900 every shift LOL. So no accurate times with the setup but I would venture it to definetly be a low 12 with 111 traps or so if I got things right. Car was at a 3700# raceweight and was running thru cats and Magnaflow during all passes BTW. One of my regrets was not dialing it in properly before doing the heads/cam swap but oh well.
The advertised rpm ranges given by Comp and other manufacturer's are not accurate! Many bolt-on guys shift their 6-speeds around 6000rpm. People with small hotcams shift around 6200-6300rpm. A cam that massive will need to be shifted beyond 6500 even with stock untouched heads to perform anywhere near where it should. I assure you this. If you do not believe me or want to believe me I am sure others will chime in but I suggest you contact someone reputable because they will tell you the same. You can read my cam sticky if you wish to understand this concept.
https://ls1tech.com/forums/lt1-lt4-m...ion-guide.html
https://ls1tech.com/forums/lt1-lt4-m...ion-guide.html
Last edited by StealthFormula; 12-28-2009 at 11:52 PM. Reason: spelling
12-28-2009, 11:52 PM
#73
From personal experience, if you take your car to the track as is, it will run 13's. That particular cam was used by another member here in which the motor didn't even show peak hp at 7000rpm when the car was shut off on the dyno. That is a massive cam for a 350, it needs some serious rpm to make power and run well. Shifting at stock rpm's is really killing the setup. I use to have the cc503 and I shifted that at stock rpm levels, just above, alot above etc. etc. and you would be suprised how much MPH you pick up when shift a car where it wants to be with a particular cam. I was stuck in the 13's with a bolt-on/cammed car when I was shifting it at 5800rpm and 13's in a cammed LT1 is just horrendous. I suggest you shift beyond 6500rpm if you want to take advantage of that cam at all or swap to a more useful smaller cam. Once you put it on a dyno you will see what I mean. I guarantee it peaks significantly higher than where you are currently shifting. Also remember you want to shift beyond peak so were talking atleast 1000rpm higher than your at now potentially. Not trying to be a dick or anything I just wanted to share some wisdom to help you out since I've had a similar experience.
I had to shift a baby 227 cam to 6300rpms to get my best times with my stock cube build. A huge 292 will for sure want more rpms then 6100, even with stock heads. It may peak at 6100 on a bone stock engine with stock manifolds and exhaust since it is being choked, but not with supporting mods.
Even more reason to go down a few notches on the cam - I bet you are way down on the low end, for only an extra 10hp or so up top compared to a much smaller cam. If you are not drag racing and just cruising then you are sacrificing torque and drivability for literally no benefit, since that cam will only shine at 6500+ rpms.
12-29-2009, 12:14 AM
#74
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I asure you I have picked up MASSIVE power throughout the hole rpm range and banging second gear at 5800rpm led to a quick shift into third before scaring the @#$% out of me! I love it and I'm not changing a thing. Thanks....
12-29-2009, 12:17 AM
#75
I shifted my hotcam at 6400-6600 It was over kill and probably needed to be shifted around 6200-6300 but either way I was shifting a cam that is alot smaller then yours at higher rpm then yours to get the potential out of it.
Honestly your car will not perform much better then a stock cam shifting that low. It will just sound mean, and start to pull like crazy then all the sudden its time to shift and your out of your power band again.
But if your happy with the car, and how it performs. Get it tuned and ENJOY!
Honestly your car will not perform much better then a stock cam shifting that low. It will just sound mean, and start to pull like crazy then all the sudden its time to shift and your out of your power band again.
But if your happy with the car, and how it performs. Get it tuned and ENJOY!
