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Message: <blockquote data-quote="MustangChris" data-source="post: 615372" data-attributes="member: 10830">i know what sleeving is. and it looks like on aluminum blocks they can sink after years of use.also, thank you for the 5.4/4.6 info <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile    :)" loading="lazy" data-shortname=":)" />im not wasting money on a junkyard motor... ive got $600.00 tail lights to buy...lol, i have a whole build thread amigo <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile    :)" loading="lazy" data-shortname=":)" />  KB 2.8L Top mount. as for the fuel system i pretty much plan on leaving that up to the tuning shop to work out. Thanks for the 5.4/4.6 info <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile    :)" loading="lazy" data-shortname=":)" />Im leaning more and more for the boss 5.0, but i still havent picked yet... that $3,000 price tag is hard to swallow.Ive already purchased terminator heads.I looked at alot of other forums and people making 1000 RWHP with aluminum blocks all seem to own shops... and therefore dont care about dropping the motor once a week. Some people running teskids have mentioned weaker threads in the block and pushing out freeze plugs (although i dont think the freeze plug problem is a common occurance)as for the termi long block, im looking to stand out a little bit and to push for some more cubes. Everyone and their mother drops in an assembled FRPP termi long block. My two expenses are my house and my car-shopping list. .. ..  house is good to go for 2009, so now its time for the car. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile    :)" loading="lazy" data-shortname=":)" />My question is, how long do you think each one will last over time? when I'm 260 years old (which will happen because we are getting socialized healthcare.) will I have to pull out my teskid because the gasket surfaces warped due to non-uniformal (is that a word) heating-and-cooling cycles? is my timing cover going to decided to remove itself due to weeker threads? are my sleaves going to sink due to un-uniformal (is that a word) heating-and-cooling cycles?I honestly dont know what to expect...Kenne bell put a 2.8 on a Cobra.... they upgraded the fuel system to handle the blower... then on a 100% stock car (outside of the blower and fuel) it pushed out 774 to the wheels (according to their website) Im guessing that about 850 crank horsepower.Im guessing ill be looking at more than that with more CIs and a built head...This car will immediately be lost as a daily driver, so i dont need to worry about that. It wont see snow and ill avoid rain.... the ONLY thing im worried about at this point is the block failing. (keep in mind, this is the first step of the build, so this is the only think I *have* to worry about at this point) I just want "the right answer"... lol. what if i get bored and throw giggle gas at it? then im going from 900 crank to 1000 crank. will my block thats 10 years old be able to handle that? would a cast stand a better chance than aluminum?I know the numbers im throwing out and the "madatory" reliabilty thing seem hypocritical, but keep in mind i am throwing out numbers for a worst-case-scenario.... "Prepare for teh worst and hope for the best." Id hate to build a motor ready for 850 HP and the car makes 900 and blows up its first go on the dyno. so I'm "preparing" for 1000 crank, but in all reality I will be running it at 17 PSI most of the time anyways... So I guess my biggest fear isnt the block failing, but more of it failing over time. I realize everything fails over time... but which one will last longer? a cast? or an aluminum? a cast with sleaves? or an aluminum with sleeves? how do you even spell sleavez?Dont you DARE bring my spiderman PJs into this...I'm well aware that I have some experience on cars... I just learned how to put in new headlights... because im ballar like that... but building an 800HP car is well over my head. Everyone on the site understand the intake, compression, combustion, exhaust cylces... but it takes a professional to order "honda v-tak heat-sensitive rings" instead of "mitchubishi mivek cold-sensitive rings...""Q Oil" is recomended by ferarri, but i still use moble 1 ;-) lol.I have a feeling both blocks will handle the power fine (now that ive written this long thread and thought about it some.) NOW what im worried about is longevity (here's where your expertise (sp?) comes in Bob) will my aluminum block warp funny because of the matrial, where a cast block wouldnt? will the aluminum block crack after 20 years, where a cast one wouldnt? will my gasket surfaces warp on the aluminum where a cast one wouldnt?Picking a block is harder than picking a girlfriend... All I want out of a girlfriend is a pulse. And sometimes that's optional!Thank you all for your help. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile    :)" loading="lazy" data-shortname=":)" /> please. keep the pwnage coming!</blockquote>