C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Max Horsepower

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Old Aug 1, 2004 | 10:45 PM
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Default Max Horsepower

What would be the most horsepower a stock L98 2 bolt block could handle? Assuming motor has just been rebuilt with good quality but not top of the range components.
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Old Aug 1, 2004 | 10:46 PM
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Plenty, don't worry.........
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Old Aug 1, 2004 | 11:07 PM
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I am not worried. I am pushing 350 CHP now and want to know how far I can push it before it puts too much strain on the bottom end.
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Old Aug 2, 2004 | 09:26 AM
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I have a stock 2 bolt with only arp studs. Hyperutectic pistons,stock rods with arp bolts, and a cast crank. Makes 450 hp at wheels with spray. Haven't broken anything............yet! I agree that it will handle quite a bit.
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Old Aug 2, 2004 | 10:55 AM
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typically the first thing to let go is the rods. Quite often they fail secondary to a bolt failure- did you put in good rod bolts? Did you at least use new rod bolts? This would probably be the HP limiting factor of your engine, and there is no real magic HP number that this stuff will break, just that it will fail sooner than the good stuff.
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Old Aug 2, 2004 | 10:57 AM
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I wouldn't worry about horsepower so much as RPM's. It'll handle a lot of power if you keep the revs to a reasonable level.
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Old Aug 2, 2004 | 01:28 PM
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Probably will hold to 450-500, but you really need to worry about what rpm youre pushing it to.
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Old Aug 2, 2004 | 02:59 PM
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600 no problem
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Old Aug 2, 2004 | 05:32 PM
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Not enough, if you beet your vette like I do. I did a killer top end on it last year. Because the stock engine was rebuilt when i bought the car. So i figured I'll leave the bottom end alone because there are people that go 11's on a stock sort block. Well I paid for it last week.
Now re-rebuilding with forged internals to handle the rev's.

I agree that there strong enough....just keep the rpm's down, no 5,500-6,500 shifts with a mini-ram
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Old Aug 2, 2004 | 11:31 PM
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I was making 470 rwhp and turning 7000 rpms when mine gave up. Spun all three center main bearings and broke the center main cap in half. I was using ARP main bolts.
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