Hello Dart!
Here is what I think would be the ultimate aftermarket 2nd Gen iron block. 4.125” bore, w/ extra-thick cylinder walls, capable of handling a 3.875” or 4.00” stroke, 4-bolt mains, a competition oiling system, premium high-strength iron and beefed up in all the critical areas. Also, maybe a tall-deck (9.325") version block.
And, if you wanted to take it to another level, an all-out competition aluminum block with 4.190” bore sleeves and a 4.125” stroke capability.

WD
no one shows any love for them.
there are a total of 3 companies making aftermarket heads for them,
only a handful of reputable head porting guys are out there that will even f*ck with them.
the aftermarket intakes that are available have minimal R&D time compared to the LSx cars, and even the one(s) that are produced, barely out perform a stock unit.
does anyone make a turbo kit for an lt1? I know of 10 companies that do for LSx owners.
we're definately getting shat on by the later model motors...
no one shows any love for them.
there are a total of 3 companies making aftermarket heads for them,
only a handful of reputable head porting guys are out there that will even f*ck with them.
the aftermarket intakes that are available have minimal R&D time compared to the LSx cars, and even the one(s) that are produced, barely out perform a stock unit.
does anyone make a turbo kit for an lt1? I know of 10 companies that do for LSx owners.
we're definately getting shat on by the later model motors...
Also, our blocks are pretty good for stock, only thing we could use over stock is being able to punch them out more. That 454cid SBC that World sells would be awesome for an LTx
It would call for some different heads though I think, not needed but you'd want the combustion chamber styled different to be able to use bigger valves. 07-09-2008, 06:58 PM #42
Jeff@ramchargers
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Join Date: Jan 2005
Location: Warren, MI
Posts: 52 Hey guys, I work for Dart now and do the valve job on those heads. I have them on my 94 m6 with a hot cam and full lengths and you really notice a difference. I have not been to the dyno or the track yet due to working so much overtime so I can not get you numbers there. If you guys have any questions I can try to help you the best I can.
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Jeff @ Dart Racing Heads
94 Camaro Z-28 M6
95 Trans Am A4
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SBC is far better in everyway when it comes to building a racing engine
Its not a hard swap at all, and if its not your daily driver than who cares
Again if your racing stuff like this doesnt matter in a track car
So, a lot of going fast is simply the way you want to approach it (LTX, BBC, SBC, N/A, N2O, forced induction, nitro or whatever). It’s your choice with the performance package you want to build and feel comfortable with. Hey, I still see some 409s at the track from time-to-time.
WD







