Quote:
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Originally Posted by tccrab
Keith:
411 at the rear wheels?
Intake has never been off?
Could be done with Nitrous... but not for long!
TomC
'90ZR1 #792 |
tom...here was the mr. numbers reply....he makes sense..but..of course..
i'm not much of a tech...
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Posted: 4 Post subject: 
itlgo2 wrote:</SPAN>
8388 wrote:I own two ZR-1's and you probably won't like what I have to say, but I would do only bolt ons. The LT-5 is a bit too complicated for internal mods, in my opinion. With the right bolt ons you can make 400+ to the rear wheels. My 93 makes 411 rwhp and the intake has never been off, and it does that without aftermarket headers too. In my opinion it's best to achieve the 500+ hp in a regular C4. It's cheaper, and easier to work on, and when it's time to sell, it's easier to sell a modded regular C4 over a ZR-1.
really....?? 411 rwhp ..and you havn't ported...or added headers?
so ...i'm all ears...what DID you do?
It has a Desert development 3" exhaust (they don't make these anymore) but it would not be hard to duplicate. They used a unique X crossover that in my opinion really helps. I also have a Doug Rippie chip. The 411 was done thru cats, although I no longer have cats, the car does feel a bit stronger, but I have not redynoed it since the cat removal.
In my opinion, is has all to do with having the cams timed correctly. There exist a large varience of power between most ZR-1's and that's because these engines were all hand assembled, thus cam timing varies from one to another. Most won't tell you that, because they are clueless, but those are the facts.
The LT-5 as you know, is a very hard working and dependable engine. Probably the most dependable engine out there. But once you start modding it's internals all of that changes. No difference than modding up any other engine on the planet, the only difference is that the LT-5 is a bit more complicated and more expensive to fix. For me, if you need to have 500, 600 700 + hp, it's best to do it with something that is easy and cheap to work on. The old small blocks or even the new LS engines are cheap and easy to work on, and make good power.