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Old 12-03-2010   #1
tpepmeie
 
Join Date: Aug 2005
Location: Fishers, IN
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Cool 427 Valvetrain parts

What does nearly $8k buy these days... I hope it performs as good as it looks.

not shown are the new buckets, valve locks, and shims to set the spring heights.








Last edited by tpepmeie; 12-03-2010 at 02:23 PM. Reason: math error...
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Old 12-03-2010   #2
A26B
 
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Default Re: 427 Valvetrain parts

Dang that's pretty!

Are the spring seats any different than stock?
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JERRYS LT5 GASKETS & PARTS
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1994 ZR-1, Black/Black, Lingenfelter Aerobody, 416cu in, 3.91 gears, coil-over susp, Brembo brakes, etc.
2016 Black-Red, 3LT-Z51 Auto 8-speed.
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Old 12-03-2010   #3
rhipsher
 
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Location: Houston 90 Red ZR-1
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Default Re: 427 Valvetrain parts

You've got that right jerry. Im gonna make that first pic my screen saver at work. What rwhp range can you expect with a 427ci LT5?

Last edited by rhipsher; 12-03-2010 at 05:10 PM.
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Old 12-03-2010   #4
tpepmeie
 
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Default Re: 427 Valvetrain parts

Quote:
Originally Posted by A26B View Post
Are the spring seats any different than stock?
dimensions are a little different to match the new springs.
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Old 12-03-2010   #5
Kevin
 
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Default Re: 427 Valvetrain parts

what size are those valves? i'm lovin this
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Old 12-03-2010   #6
USAFPILOT
 
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Default Re: 427 Valvetrain parts

Who builds 427's? As in who not as in why build a 427. I would love a 427, much more than a 415.
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Old 12-03-2010   #7
Polo-1
 
Join Date: Sep 2005
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Default Re: 427 Valvetrain parts

PURE LT5 PORN

I like it

http://www.aesracing.net/lt5.htm
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Old 12-04-2010   #8
tpepmeie
 
Join Date: Aug 2005
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Default Re: 427 Valvetrain parts

Quote:
Originally Posted by Kevin View Post
what size are those valves? i'm lovin this
Not as big as you might think... only 39.5mm. plenty of room in the chamber to go bigger, up to 42mm. You have to be careful of valve clash between the intake & exhaust if you have significant lift around TDC. Next time, I'll go bigger....
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Old 12-04-2010   #9
XfireZ51
 
Join Date: May 2007
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Default Re: 427 Valvetrain parts

Todd,

You've clearly spent a great deal of time, planning and money on this project. What's your expectations? How will you be judging whether you've succeeded and that money was well spent?
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Old 12-04-2010   #10
tpepmeie
 
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Default Re: 427 Valvetrain parts

Quote:
Originally Posted by XfireZ51 View Post
Todd,

You've clearly spent a great deal of time, planning and money on this project. What's your expectations? How will you be judging whether you've succeeded and that money was well spent?
Dom,
great question. What does success look like...
1) I actually get it assembled in time for the dyno test in January...
2) starts up with no drama...
3) good compression, ring seal, etc.
4) at least 700 chp on the engine dyno
5) no infant mortality, the thing survives the dyno test without wiping a cam lobe or breaking something.
6) no smoke, minimal oil consumption

We'll see. Recent experiences by some of the other members have made me a little quesy about turning the key first time. After all, this is the first time I've assembled an LT5...

Todd
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