Engine rebuild
Building an all iron motor doesn't make much sense unless you are shooting for 1000+hp. Then if you do, what transmission/drivetrain setup is going to handle that? Not worth the 100+ extra lbs on your front end IMO. I have never seen anyone report an aluminum block related failure.
I'd prefer keeping the alum. block, i know cop car hates it and thinks it's dumb but it's just a personal preference, although i'm very open to the 402. I'm considering staying with the 347 and simply rebuilding and forging that...how much cash would i be looking at doing that VS. a 402, also i'm considering the stock CI because i'm not wanting ot have to go buy a bigger cam and new heads, and i'd like to set the car up for forced induction on forging the stock cid.
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Wow this post is old but I want to add my experience building a 408. I think a 383 would meet your goals but let me share what I have learned.
I came across a good deal on a lq4 block that needed to be rebuilt. I started getting into the "well Im already rebuilding it I might as well...." and it ended up costing me. I originally planned on spending about 3500 and it has cost me twice that. Dont get me wrong I now have a badass 408 with forged crank, rods, pistons, AFR 225 heads, etc but if I had to do it over again I would have saved money and just done a basic rebuild with forged pistons (maybe rods too) and a good set of heads.
If you do a 402/408 you have to factor in all the supporting mods like making sure your rear end and flywheel/clutch/tranny will hold up. It looks like you have a nice bolt and cam setup right now and you will be able to re use a lot of those parts if you go with a forged 347/383. If you go forced induction you will want a lower static compression ratio.
If I were you I would do a 383 with an eagle crank, compstar forged rods and some Wiseco nitrous pistons. If you are not satisfied with your numbers you can always add a healthy dose of nitrous. Option 2 would be to re use your crank and put that $900 towards porting your heads. and doing a forged 347.
Did you already make a decision since this first posted?
I came across a good deal on a lq4 block that needed to be rebuilt. I started getting into the "well Im already rebuilding it I might as well...." and it ended up costing me. I originally planned on spending about 3500 and it has cost me twice that. Dont get me wrong I now have a badass 408 with forged crank, rods, pistons, AFR 225 heads, etc but if I had to do it over again I would have saved money and just done a basic rebuild with forged pistons (maybe rods too) and a good set of heads.
If you do a 402/408 you have to factor in all the supporting mods like making sure your rear end and flywheel/clutch/tranny will hold up. It looks like you have a nice bolt and cam setup right now and you will be able to re use a lot of those parts if you go with a forged 347/383. If you go forced induction you will want a lower static compression ratio.
If I were you I would do a 383 with an eagle crank, compstar forged rods and some Wiseco nitrous pistons. If you are not satisfied with your numbers you can always add a healthy dose of nitrous. Option 2 would be to re use your crank and put that $900 towards porting your heads. and doing a forged 347.
Did you already make a decision since this first posted?
