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According to the article, only two ZL-1 equipped vettes were built as standard equipment (in 1969). It looks like it would be a challenging project, but ultra- .
IIRC those blocks have provision for a
mechanical fuel pump and a clutch z-bar.
This version has a carb so no F.I. mods needed.
It should bolt in over a weekend (three if I did it :o )...
According to the article, only two ZL-1 equipped vettes were built as standard equipment (in 1969). It looks like it would be a challenging project, but ultra- .
Two were built for sale. There were several engines shipped from Tonawanda to St. Louis with Corvette stampings, and it seems likely that GM built a few cars for internal testing and publicity purposes.
Nothing but a high priced incorrect copy. A stock L72 will blow it in the weeds with this new ZL1`s 10-1 compression. The outside looks good but it`s the internals that produce the HP. ...
Last edited by Ironcross; Nov 4, 2007 at 02:04 PM.
Nothing but a high priced incorrect copy. A stock L72 will blow it in the weeds with this new ZL1`s 10-1 compression. The outside looks good but it`s the internals that produce the HP. ...
From: I tend to be leery of any guy who doesn't own a chainsaw or a handgun.
Originally Posted by Ironcross
Nothing but a high priced incorrect copy. A stock L72 will blow it in the weeds with this new ZL1`s 10-1 compression. The outside looks good but it`s the internals that produce the HP. ...
Unless you only do straightline stuff, or got a helluva big wing on your machine, all the horsepower in the world won't get you around a corner quickly (these are sportscars, after all). I'm presently building a ZL1 block based aluminum engine. I know I won't have more horsepower than everybody else on the track/course, but I'll be in the ballpark, and I'll certainly have less frontend weight than a good share of the machines there.
It's that old debate - is "old school" cool when it gets it's a$$ kicked by "new school"? I'm right in the middle of that debate myself...I always wanted a "correct" LT-1...but when I look strictly from a performance perspective a hopped-up LS-series makes a lot more sense.
It took a while, but I think the break between "classic" and "fast" has happened over the last few years with the return of performance engines like the LS series. We used to have to stick to the old stuff because the new stuff was junk (305, etc.). No longer true.
BTW, the ZL-1 block has been available for a while...P/N 12370850 - $4,689.95 at SDPC.
It's that old debate - is "old school" cool when it gets it's a$$ kicked by "new school"? I'm right in the middle of that debate myself...I always wanted a "correct" LT-1...but when I look strictly from a performance perspective a hopped-up LS-series makes a lot more sense.
It took a while, but I think the break between "classic" and "fast" has happened over the last few years with the return of performance engines like the LS series. We used to have to stick to the old stuff because the new stuff was junk (305, etc.). No longer true.
BTW, the ZL-1 block has been available for a while...P/N 12370850 - $4,689.95 at SDPC.
Thats exactly my point. They have all the correct stuff on the shelves and to try to make a limited edition and give you a certificate of authenticity of what. It`s not the real thing, it`s a phony called ZL1. It`s not even in the same ballpark except for weight. All your getting is expensive documented papers. Big deal. You can make your own the way you want for less money and more HP. So what do you really get? A low HP certified 427. It certinally shouldn`t make any Vette more valuable. It`s just a numbered new crate engine.....not even a good copy.
From: I tend to be leery of any guy who doesn't own a chainsaw or a handgun.
Originally Posted by SteveG75
I'd rather buy one of these from Shafiroff. 427 vs 540.
Don't forget the 2 yr/unlimited mileage warranty as well.
This looks to be a very reasonable price for that sort of straightline performance potential, but you have to keep in mind there's still 260# of cast iron in that block.
They should build a ZZ427 small block they would not be able to keep them in stock
I would be more likely to put one of these in my vette since it is a SB bigger than what was available. No way would I put a BB427 in what could have been a 73 BB454 vette.
Originally Posted by Ironcross
Nothing but a high priced incorrect copy. A stock L72 will blow it in the weeds with this new ZL1`s 10-1 compression. The outside looks good but it`s the internals that produce the HP. ...
Originally Posted by Ironcross
Thats exactly my point. They have all the correct stuff on the shelves and to try to make a limited edition and give you a certificate of authenticity of what. It`s not the real thing, it`s a phony called ZL1. It`s not even in the same ballpark except for weight. All your getting is expensive documented papers. Big deal. You can make your own the way you want for less money and more HP. So what do you really get? A low HP certified 427. It certinally shouldn`t make any Vette more valuable. It`s just a numbered new crate engine.....not even a good copy.
The only thing I think this engine is good for is for the people that have a car from 1966-1969. If my car could have come with a BB454, there is no way I am going to put a BB 396-427. It it could have came with a 454, then it will atleast get a 454 (or maybe more )
Personally, I think this engine is a joke. GM is using history to make them a few bucks. I am sure there will be a number of disappointed people when they find out this engine isn't even close to the legendary 427. For those who don't know any better, they are going to think that 1960's racing is a joke when a brand new Z06 hands them a new one.
This looks to be a very reasonable price for that sort of straightline performance potential, but you have to keep in mind there's still 260# of cast iron in that block.
How about:
World Products 108053A
540 cubic inches, 630HP, 630 Ft. Lbs., Merlin X Aluminum block, Merlin III 350 Aluminum heads, $16,000 from Summit Racing and you still get a 2 year warranty.