CK5
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ZL-1 engine!!
- Thread starter K5kidd
- Start date
That's cool, you gotta love those old big blocks! 
That's cool, you gotta love those old big blocks!
I sure do. It's a 427 with the l88 heads,big cam, holly 750cfm intake and carb.
I sure do love that girl.
lol
Oh, I thought you meant LS7 big block.
LS7 Big Block is a 454
big pappa b
3/4 ton status
Yep
I'd be happy with an LS6. 
LS7 was designed but never went to production vehicle. ( probably do to rising insurance and gas prices and impending smog laws )However, a handful of LS7 intake manifolds were produced and sold by a few Chevy dealers as performance parts. The LS7 was later offered as a crate engine from GM and advertised at 500 hp
454 and 427 are the same thing. A 454 is a 4.25" bore with a 4" stroke. A 427 is a 4.25" bore with a 3.76" stroke. They are the same block. Just different crank.
LOL I know that, But you called your engine an LS7 which is a 454 crate motor if its a 427 then its not an LS7 and if its a LS7 its not a 427 understand??
Now, you could have a LS7 Block that was fitted with a 427/396 crank but what would be the point? Why would someone de-stroke a LS7???
Idk. Lol but that's what I have. I checked the casting numbers. The only thing I could think of was they wanted an internally ballanced motor?? Idk.
"veary nice! High five!" - Borat.
Your best bet is to pull those L-88 heads and sell them to the resto crowd and use that money to buy you a good set of AFR's, Dart, or World products heads . those heads are 1960's tech the new stuff is better and cheaper and not historically significant .
Then get a 4.25 stroker Rotating assembly and you'll have more power out of a smoother more pump gas friendly power plant.
Muscle Car era stuff was cool in its day but its been eclipsed along time ago , save that stuff for the #'s matching crowd
Then get a 4.25 stroker Rotating assembly and you'll have more power out of a smoother more pump gas friendly power plant.
Muscle Car era stuff was cool in its day but its been eclipsed along time ago , save that stuff for the #'s matching crowd
I plan on keeping it for sentimental reasons. Me and my old man put the cam in when I was 7. It was my first engine build. I would just like to keep it and maybe put it in a rat or maybe resto. I know he used the l88 heads because at the time the had alot of flow.
Well , sentiment is just a good reason to keep them as any other I guess, but if your going for serious power there are better options
Do you know if they are the open or closed chamber?
Or what year the castings are?
Got any pics of said ZL-1?
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The LS7 is a 427 used in the 2006 and up corvette Z06. It is also available in crate engine form.
7.0 L
LS7
7.0 L LS7 engine in a 2006 Chevrolet Corvette Z06
LS7 can also refer to a 454 CID Chevrolet Big-Block engine of the 1970sThe LS7 is a 7,011 cc (7.011 L; 427.8 cu in) engine, based on the Gen IV architecture. The block is changed, with sleeved cylinders and a larger 4.125 in (104.8 mm) bore and longer 4.00 in (102 mm) stroke than the LS2. The small-block's 4.4 in (110 mm) bore spacing is retained, requiring pressed-in cylinder liners. The crankshaft and main bearing caps are forged steel for durability, the connecting rods are forged titanium, and the pistons are hypereutectic. The two-valve arrangement is retained, though the titanium intake valves by Del West have grown to 2.20 in (56 mm) and sodium-filled exhaust valves are up to 1.61 in (41 mm).
Peak output is 505 hp (377 kW) at 6300 rpm and 470 lb·ft (640 N·m) at 4800 rpm with a 7100 rpm redline[citation needed] During GM's reliability testing of this engine in its prototype phase, the LS7 was remarked to have been repeatedly tested to be 8000 rpm capable, although power was not recorded at that rpm level, due to the constraints of the camshaft's hydraulic lifters and the intake manifold ability to flow required air at that engine speed.
The LS7 is hand-built by the General Motors Performance Build Center in Wixom, Michigan. Most of these engines are installed in the Z06, some are also sold to individuals by GM as a crate engine. They were also exported for use in the Australian built Holden Special Vehicles W427.
After an extensive engineering process over several years, Holden Special Vehicles fitted the LS7 to a special edition model, the W427. The HSV-tuned engine produces 375 kW (503 hp) and 640 N·m (470 lb·ft), making it the most powerful car ever built in Australia. The W427 was unveiled at the Melbourne International Motor Show on 29 February 2008[8] and went on sale in August 2008.
Applications:
The LS7.R engine is a variation of the LS7 used in the highly successful C6.R American Le Mans Series racecar. It was crowned as Global Motorsport Engine of the Year by a jury of 50 race engine engineers on the Professional Motorsport World Expo 2006 in Cologne, Germany.
7.0 L
LS7
7.0 L LS7 engine in a 2006 Chevrolet Corvette Z06
LS7 can also refer to a 454 CID Chevrolet Big-Block engine of the 1970sThe LS7 is a 7,011 cc (7.011 L; 427.8 cu in) engine, based on the Gen IV architecture. The block is changed, with sleeved cylinders and a larger 4.125 in (104.8 mm) bore and longer 4.00 in (102 mm) stroke than the LS2. The small-block's 4.4 in (110 mm) bore spacing is retained, requiring pressed-in cylinder liners. The crankshaft and main bearing caps are forged steel for durability, the connecting rods are forged titanium, and the pistons are hypereutectic. The two-valve arrangement is retained, though the titanium intake valves by Del West have grown to 2.20 in (56 mm) and sodium-filled exhaust valves are up to 1.61 in (41 mm).
Peak output is 505 hp (377 kW) at 6300 rpm and 470 lb·ft (640 N·m) at 4800 rpm with a 7100 rpm redline[citation needed] During GM's reliability testing of this engine in its prototype phase, the LS7 was remarked to have been repeatedly tested to be 8000 rpm capable, although power was not recorded at that rpm level, due to the constraints of the camshaft's hydraulic lifters and the intake manifold ability to flow required air at that engine speed.
The LS7 is hand-built by the General Motors Performance Build Center in Wixom, Michigan. Most of these engines are installed in the Z06, some are also sold to individuals by GM as a crate engine. They were also exported for use in the Australian built Holden Special Vehicles W427.
After an extensive engineering process over several years, Holden Special Vehicles fitted the LS7 to a special edition model, the W427. The HSV-tuned engine produces 375 kW (503 hp) and 640 N·m (470 lb·ft), making it the most powerful car ever built in Australia. The W427 was unveiled at the Melbourne International Motor Show on 29 February 2008[8] and went on sale in August 2008.
Applications:
- 2006-present Chevrolet Corvette Z06
- 2008 HSV W427
The LS7.R engine is a variation of the LS7 used in the highly successful C6.R American Le Mans Series racecar. It was crowned as Global Motorsport Engine of the Year by a jury of 50 race engine engineers on the Professional Motorsport World Expo 2006 in Cologne, Germany.
I'm not looking to sell if that's what your getting at. But I'm not sure on what the chambers are. The numbers are there. But like I said. I was seven the last time I touched this motor. It's still sitting in the same place in the barn. Hasn't moved.
I don't believe you have dissapointed anyone; no one believed you had a ZL1 in the first place.
I'd even say you don't have factory L88 heads either and as it turns out you never had an LS7 either.
I think you need to do some fact finding to see what you really have.
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Stomis
Professional Amateur
I don't believe you have dissapointed anyone; no one believed you had a ZL1 in the first place.
I'd even say you don't have factory L88 heads either and as it turns out you never had an LS7 either.
I think you need to do some fact finding to see what you really have.
Lol an LS7 w/ L88 heads, the wrong crank and a different cam isnt an LS7...
Thats like saying well I built a wicked 383 on an LO5 production block, its still and LO5 though...
