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SN95 Cobras
Swapping to C-Heads from B-Heads on Teksid Block many questions.
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<blockquote data-quote="mr. b_98GT" data-source="post: 15282409" data-attributes="member: 150353"><p>1. 98 cams will be ideal for the 99 c heads. If you can swing it, the later version 9 thread heads are better. Look up a head cooling mod for the 99 heads. Cobra Engineering and MMR make good kits. </p><p></p><p>2. There are lots of places on line to get internals. You could probably find a place local to you to get them too. Ask around for a quality machine shop, you're going to need one, and talk to them. I had a shop build me a motor (I found a block and crank), so I got the internals from them. </p><p></p><p>3. Stock compression for an 03 Cobra is 8.5:1. Mine was built at 9:1. I'd say stay under 10:1 if you are going to run pump gas, but others with more experience than me would know more about CR. Mod Max has some great info on their kits with choosing pistons and getting a certain CR. 10-11cc or 17-18cc dished pistons will get you around 9.18:1 or 8.84:1 for a DOHC engine. As for boost, not sure on that one. I will say you won't see 650-700hp with an Eaton, so you're looking at a twinscrew s/c to hit that mark.</p><p></p><p>4. Don't forget the fuel system and other mods needed to support 650-700hp. You might want to consider your budget and tally up what it will cost you to get there. You'll need to also get everything else for the engine to run c heads with a s/c up top. It's doable, but it might be more costly than you think.</p></blockquote><p></p>
[QUOTE="mr. b_98GT, post: 15282409, member: 150353"] 1. 98 cams will be ideal for the 99 c heads. If you can swing it, the later version 9 thread heads are better. Look up a head cooling mod for the 99 heads. Cobra Engineering and MMR make good kits. 2. There are lots of places on line to get internals. You could probably find a place local to you to get them too. Ask around for a quality machine shop, you're going to need one, and talk to them. I had a shop build me a motor (I found a block and crank), so I got the internals from them. 3. Stock compression for an 03 Cobra is 8.5:1. Mine was built at 9:1. I'd say stay under 10:1 if you are going to run pump gas, but others with more experience than me would know more about CR. Mod Max has some great info on their kits with choosing pistons and getting a certain CR. 10-11cc or 17-18cc dished pistons will get you around 9.18:1 or 8.84:1 for a DOHC engine. As for boost, not sure on that one. I will say you won't see 650-700hp with an Eaton, so you're looking at a twinscrew s/c to hit that mark. 4. Don't forget the fuel system and other mods needed to support 650-700hp. You might want to consider your budget and tally up what it will cost you to get there. You'll need to also get everything else for the engine to run c heads with a s/c up top. It's doable, but it might be more costly than you think. [/QUOTE]
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Swapping to C-Heads from B-Heads on Teksid Block many questions.
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