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New Edge Cobras
Another 99 Cobra build thread...
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<blockquote data-quote="01yellercobra" data-source="post: 16022223" data-attributes="member: 35549"><p>That's a negative. The Teksid and WAP blocks are sleeved. I had a big bore Teksid. But it ended up with cracks due to improper machining. IMO if you want a big bore set up get a Boss block. Less headache in the long run. </p><p></p><p>If you only want 600 you don't need a lot. Cleaned up heads and a decent short block will get you there. Once you get the engine apart you can make more decisions.</p><p></p><p>Ideally you want the least amount of material removed. So if you can clean it up with .010" go with that. I'd say .020" is max. Most builders will tell you if the block needs more its time to find a new block.</p><p></p><p>FWIW my Boss block set up made 500rwhp on a Mustang dyno with low boost and no timing. That was with stock heads, intake, and Ford GT cams.</p><p></p><p>The 99 IRS has 28 spline inner shafts, not 26. I would look into upgrading to 03/04 shafts and diff at the very least. I grenaded a stock 01 shaft on a hard shift getting on the freeway.</p></blockquote><p></p>
[QUOTE="01yellercobra, post: 16022223, member: 35549"] That's a negative. The Teksid and WAP blocks are sleeved. I had a big bore Teksid. But it ended up with cracks due to improper machining. IMO if you want a big bore set up get a Boss block. Less headache in the long run. If you only want 600 you don't need a lot. Cleaned up heads and a decent short block will get you there. Once you get the engine apart you can make more decisions. Ideally you want the least amount of material removed. So if you can clean it up with .010" go with that. I'd say .020" is max. Most builders will tell you if the block needs more its time to find a new block. FWIW my Boss block set up made 500rwhp on a Mustang dyno with low boost and no timing. That was with stock heads, intake, and Ford GT cams. The 99 IRS has 28 spline inner shafts, not 26. I would look into upgrading to 03/04 shafts and diff at the very least. I grenaded a stock 01 shaft on a hard shift getting on the freeway. [/QUOTE]
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