What would you do? Dillemma. (kinda long)
01-12-2008, 02:13 PM
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What would you do? Dillemma. (kinda long) Spend 4k to finish my H/C build up (the parts in my sig), plus TFS heads and a ported FAST 90 set up. OR spend an additional 4k (8K total) for a long block 418?
Last edited by C5 Forever; 01-12-2008 at 04:54 PM. Reason: clarification
01-12-2008, 04:47 PM
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How much money do you have to spend? you are also going to need to upgrade things on the car as well. If it help's after my year in Iraq I was able to put some ported L92 heads on an iron 408. But I bought a 10 point roll cage fuel system all BMR suspension . Bogart wheels a strange rear end this stuff adds up depending on how far you want to go. I have about 29,000.00 in part's so far in my 99 SS and that was with me doing all of the work but the Machine work.
01-12-2008, 05:00 PM
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I'll have enough to do whatever I want. Yeah, I'm going to do the rear end and stall converter; drive the trans to it craps out and go with a 4L80e. I'm just trying to pit an almost max effort H/C vs. bigger cubic inches; how much more 75hp or so is going to cost? And where I'll be able to go from there.
01-12-2008, 05:12 PM
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If I could do it over again I would do a big cubic inch N/A build. I really like the power I am seeing out of the 427's and they are getting pretty affordable.
01-12-2008, 05:19 PM
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That's just my inexperience in the matter. I've never owned anything or 350ci. So, I'm not sure what I'm missing out on the larger applications. Maybe I should just go that route and try it.
01-12-2008, 05:57 PM
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I think you can ask any shop owner that has driven H/C C5's versus 400+ cu in built C5's, there is no comparison. And coming from a Vette owner that has used nitrous, owned a twin turbo kit and messed with C5's with Superchargers, build the biggest cubic inch engine you can afford, you can't go wrong. Hope this helps 
01-12-2008, 07:32 PM
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The way I see it is you already have it apart...do it right. Go with a larger cube...however will your head and cam package be usable on a larger cube? If you just do the HC swap you may look back and say you should have done the motor...but f you do the motor, you will have a badass car and wont regret it. Thats my two cents.
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01-12-2008, 08:23 PM
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The bigger motor won't just give you 75 more horsepower, or it might not be worth it. It will give you more torque, the ability to run a bigger cam with good drivability, and a forged platform if you want more power later. I would (and did) go bigger.
01-13-2008, 07:36 AM
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The way I see it is you already have it apart...do it right. Go with a larger cube...however will your head and cam package be usable on a larger cube? If you just do the HC swap you may look back and say you should have done the motor...but f you do the motor, you will have a badass car and wont regret it. Thats my two cents.
01-13-2008, 06:04 PM
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I would do a 402 with an L92 top end for now, then upgrade the top end later when the real good LS3 stuff is out in force - should get close to 500 whp. Then when all the big head companies and FAST get their LS3 stuff out, upgrade the top end.
-Geoff
-Geoff