whats its take for a ls1 to beat a pullied 03 cobra?
#41
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The modular bottoms have never been known for their strength.......many have blown up for no apparent reason. Do a search on svt, it's almost epidemic like. Finicky motors for sure.
#42
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Probably the tune. But there were no signs of detonation. It just spun a bearing. It was still on the stock limiter.
The modular bottoms have never been known for their strength.......many have blown up for no apparent reason. Do a search on svt, it's almost epidemic like. Finicky motors for sure.
The modular bottoms have never been known for their strength.......many have blown up for no apparent reason. Do a search on svt, it's almost epidemic like. Finicky motors for sure.
#43
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Your car runs better than every bolton ls6 f-body ive heard of. But it is not the norm, hence all the questions and doubts from others. Not me your car is obviously a freak.
I spin to almost 7k with no problem in my car. I dont do it often as i dont need to. On another note. This is one of my favorite all time vids.
http://www.youtube.com/watch?v=z64Jx...e_gdata_player
I spin to almost 7k with no problem in my car. I dont do it often as i dont need to. On another note. This is one of my favorite all time vids.
http://www.youtube.com/watch?v=z64Jx...e_gdata_player
#44
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Probably the tune. But there were no signs of detonation. It just spun a bearing. It was still on the stock limiter.
The modular bottoms have never been known for their strength.......many have blown up for no apparent reason. Do a search on svt, it's almost epidemic like. Finicky motors for sure.
The modular bottoms have never been known for their strength.......many have blown up for no apparent reason. Do a search on svt, it's almost epidemic like. Finicky motors for sure.
I hang around LS guys and Cobra guys and can tell you just as many LS guys have rod bearing issues as the Cobra guys.
#45
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I disagree, in my experience if both cars are healthy it will take H/C not just Cam to beat a pulley cobra. If both cars are full weight of course.
Pulley cobras will usually trap 118 some a little more and a bunch more less.
#46
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The difference is there are ALOT more ls engines than there are cobra engines. Most guys kill the ls on a 150 shot, which far more stressful on a engine than boost. I have yet to see one blow up for no real reason, hell I only know of 1 local ls that has blown up. Several mod motors has though, and none were as fast as the ls.
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He used to be on here before he sold the car to move overseas a while back. Dvst8r or something like that was his screen name.
I built my SS similar to his a few years back. That car is cam only, fast intake, full exhaust, 4.10s and a tnt f1 kit set for a 150rwhp shot.
I built my SS similar to his a few years back. That car is cam only, fast intake, full exhaust, 4.10s and a tnt f1 kit set for a 150rwhp shot.
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The difference is there are ALOT more ls engines than there are cobra engines. Most guys kill the ls on a 150 shot, which far more stressful on a engine than boost. I have yet to see one blow up for no real reason, hell I only know of 1 local ls that has blown up. Several mod motors has though, and none were as fast as the ls.
As for cam only cars beating pullied cobras. I drove my first cobra the day after i sold my SS. From a roll my SS felt faster up top but the cobra felt faster on the street. My SS liked to be over 4500. Below that it felt gutless compared to the cobra.
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And im willing to bet those cobras blew after sustained pulls without proper cooling mods. From the factory coolant pools in the rear of the driver side head causing #7 and 8 to get extremely hot and voila. Cylinder down. They make kits to allow the coolant to flow back thru the system and cool properly.
Those cars spun a bearing due to heat. I did the same in my old DSM years ago running a big turbo on a sidemount intercooler to be stealthy. Detonated and spun a bearing as the intercooler could not keep up
Those cars spun a bearing due to heat. I did the same in my old DSM years ago running a big turbo on a sidemount intercooler to be stealthy. Detonated and spun a bearing as the intercooler could not keep up
Last edited by big reg; 08-14-2012 at 07:17 PM.
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Boost from top mounted blowers builds tremendous heat. The intercooler is very small under the blower and being on top heatsoaks easy from engine heat alone let alone sustained high speed runs where iat's rise quickly. Most ls1 motors die at 525 or so from boost due to the heat generated. Most tuners will tell you anything over 8 psi is borrowed time.
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I wouldnt say no head cooling mod is half assed. More so swapping blowers and doing nothing more than a bap and injectors and wondering why the car pulls timing after sustained runs and then eventually pops. I know of several cars over 700 rwhp on stock long blocks for quite some time. My has been on this setup for over 10k miles and gets run pretty hard.
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Mine has been on the same set up for 2 1/2 years. I ran it a lot when I bought it 3 years ago, but since I started back on my race car; I've just been dd'ing it. Apparently they are weak and hard on rod bearings, wish I had known that 3 years ago before I started racing it and beating on it.
#56
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Way too many cobras run canned tunes from hand held tuners. I would never run a canned predator pulley tune without dynoing the car. There are a lot of idiots running around driving cobras it seems.