The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Best way to get to ~400hp, 454 tbi. Anyone build one?

BigBlocksRule · 01-04-2014, 07:22 AM

D.FENS, why don't you research an apples-to-apples comparison? That would require a Gen 6 454 (port injection, hydraulic roller cam, just like an LS). I've bought 4 in the past year, didn't pay $1000 for any of 'em WITH the 4L80E. They don't wear any more than an LS, crack the heads and there's still hone marks in the bores, so there's no rebuilding to be done. $600 gets a complete wiring harness, spend another $100 and it's repinned to run the 411 PCM that the LS engines use. Tune it like an LS and it will run off and leave it. The LS won't be within 50 - 75lbs of torque, more like twice that much.
I have nothing against LS engines - actually have a 6.0L iron block with LS3 heads that I'll stroke to make a 402 for my turbo race-only Firebird. Also have everything I need to build an LS7 as well. They're incredible engines, GM really did their homework when they designed them. But when it comes to towing grunt, they ain't got what it takes. GM decided to go with diesel engines for that...nobody I know does any amount of heavy towing with any LS engine, they'll spin bearings so fast it'll make your head spin.

01-04-2014, 07:22 AM	#72
BigBlocksRule Registered User Join Date: Jun 2008 Location: Lubbock, TX Posts: 2,047	Re: Best way to get to ~400hp, 454 tbi. Anyone build one? D.FENS, why don't you research an apples-to-apples comparison? That would require a Gen 6 454 (port injection, hydraulic roller cam, just like an LS). I've bought 4 in the past year, didn't pay $1000 for any of 'em WITH the 4L80E. They don't wear any more than an LS, crack the heads and there's still hone marks in the bores, so there's no rebuilding to be done. $600 gets a complete wiring harness, spend another $100 and it's repinned to run the 411 PCM that the LS engines use. Tune it like an LS and it will run off and leave it. The LS won't be within 50 - 75lbs of torque, more like twice that much. I have nothing against LS engines - actually have a 6.0L iron block with LS3 heads that I'll stroke to make a 402 for my turbo race-only Firebird. Also have everything I need to build an LS7 as well. They're incredible engines, GM really did their homework when they designed them. But when it comes to towing grunt, they ain't got what it takes. GM decided to go with diesel engines for that...nobody I know does any amount of heavy towing with any LS engine, they'll spin bearings so fast it'll make your head spin.