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SN95 Cobras
Engine Plans for my 96
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<blockquote data-quote="96CynRnr" data-source="post: 579854" data-attributes="member: 6354"><p>You tell em My Blk... I think people are afraid or hesitant to do major motor work on these cars. Just porting and polishing the heads cost me over $3700, about $1500 to port and polish the heads and $2200 to pull the motor and stuff it back it. It's not a weekend project to do the heads on these cars. Most shops will remove the motor, it's the only way I would recomend. So it's not a cheap event by any means... also consider that you could run a blower on your motor for about $2500 installed if you shopped around and ran a low boost number. It's all a matter of choice, I do a great deal of road racing (un sanctioned caynon blasts) and felt that a blower would stress the motor more than I wished. I also at some point may pull the motor again and stroke it, my belief is that if 261 cubic inches is good, than 292 would better! You may want to put the bolts on on first and then see where you are. </p><p></p><p>I also am not sure I agree with USMCracing, I do not know if you need to redo the valve train. The shop that did my valves said that Cobra heads, especially the 96 heads (first gen's are the best) are about the best factory head on the market. I had the option to replace the valves, springs, keepers etc and was told basically that I would be spending money on something that I wouldn't need. I was told that well over 400 hp could be delievered from the stock parts once the airflow was cleaned up. </p><p></p><p>I will say this, I have an 02 Lighting, it's blown and now it's OVER BLOWN, the pulleys, the computer, new fuel curve etc. It's very nice... whines alot but that's common with the trucks. I like the blown motor concept it's alot of fun but EVERYONE has a blown Cobra... it's not a bad choice by any means... most of the time it's REALLY REALLY hard to beat them for horsepower. Now all you blown Cobra fans I am NOT knocking the blowers... I think their great. However this time I want to do something different, I think with a the right exhaust and intake setup on my car with the heads ported and polished, I can get 370 HP 350 LBS of torque out of it, and it's natuarally aspirated and that's at a minimum. I could probably get over 400 if I got serious about spark and fuel curves, but I wonder if my reliability might suffer. My seals will last longer, my rings wont crack or blow, the crank shaft should be safe well over 150k. </p><p></p><p>I guess it comes down to an old adage... to make it go fast you have two choices... cubic inches or cubic dollars. I've done the cubic inched route... now I want to try the cubic dollars route. </p><p></p><p>/darin </p><p></p><p>PS. I agree with the pulley's comment, I like my AC to run cold even at idle. </p><p></p><p>PPS Avoid the aftermarket cams... a friend with a 97 Cobra is in a lawsuit with the "a" cam manufacturer and the installer when his motor self destructed on the initial fire up after the new cams were installed. It ran 0 miles and about 2 seconds on the new cams.</p></blockquote><p></p>
[QUOTE="96CynRnr, post: 579854, member: 6354"] You tell em My Blk... I think people are afraid or hesitant to do major motor work on these cars. Just porting and polishing the heads cost me over $3700, about $1500 to port and polish the heads and $2200 to pull the motor and stuff it back it. It's not a weekend project to do the heads on these cars. Most shops will remove the motor, it's the only way I would recomend. So it's not a cheap event by any means... also consider that you could run a blower on your motor for about $2500 installed if you shopped around and ran a low boost number. It's all a matter of choice, I do a great deal of road racing (un sanctioned caynon blasts) and felt that a blower would stress the motor more than I wished. I also at some point may pull the motor again and stroke it, my belief is that if 261 cubic inches is good, than 292 would better! You may want to put the bolts on on first and then see where you are. I also am not sure I agree with USMCracing, I do not know if you need to redo the valve train. The shop that did my valves said that Cobra heads, especially the 96 heads (first gen's are the best) are about the best factory head on the market. I had the option to replace the valves, springs, keepers etc and was told basically that I would be spending money on something that I wouldn't need. I was told that well over 400 hp could be delievered from the stock parts once the airflow was cleaned up. I will say this, I have an 02 Lighting, it's blown and now it's OVER BLOWN, the pulleys, the computer, new fuel curve etc. It's very nice... whines alot but that's common with the trucks. I like the blown motor concept it's alot of fun but EVERYONE has a blown Cobra... it's not a bad choice by any means... most of the time it's REALLY REALLY hard to beat them for horsepower. Now all you blown Cobra fans I am NOT knocking the blowers... I think their great. However this time I want to do something different, I think with a the right exhaust and intake setup on my car with the heads ported and polished, I can get 370 HP 350 LBS of torque out of it, and it's natuarally aspirated and that's at a minimum. I could probably get over 400 if I got serious about spark and fuel curves, but I wonder if my reliability might suffer. My seals will last longer, my rings wont crack or blow, the crank shaft should be safe well over 150k. I guess it comes down to an old adage... to make it go fast you have two choices... cubic inches or cubic dollars. I've done the cubic inched route... now I want to try the cubic dollars route. /darin PS. I agree with the pulley's comment, I like my AC to run cold even at idle. PPS Avoid the aftermarket cams... a friend with a 97 Cobra is in a lawsuit with the "a" cam manufacturer and the installer when his motor self destructed on the initial fire up after the new cams were installed. It ran 0 miles and about 2 seconds on the new cams. [/QUOTE]
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