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Just bought a 96 Z28 SS with the LT1 engine. How expensive and/or possible to put a newer LS1 engine in it?

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It can be done without too much trouble, but it would be easier to 383 or 396 the LT1 since you are taking out the engine anyway. That way you know that the engine is guarenteed to fit when you install. A good 383 from a shop like Golen in NH can give you about 480hp/460 lb/ft for about 7 large and 520hp / 490 lb/ft from a 396 for about 8. Check out this site to give an idea about power and pricing to see if it is something you are interested in.

http://www.golenengineservice.com/html/lt1_lt4.html

Check out this Summit link for stroker kits if you know a good machine shop. You can select the size of the finished engine. 383 is the most popular. 396 is up at the limit.

http://store.summitracing.com/egnsearch.asp?RC=50&N=700+4294908216+4294840140+4294889104+4294925232+4294919598+4294924746+4294854588+4294870276+115&Ntt=&Ntk=&Ns=P_SRE_DisplayPrice|1&rsview=sku#rstop
 
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