427 build
Thread Starter
Racer
Joined: Mar 2006
Posts: 277
Likes: 1
From: Springfield Missouri
427 build
I ve been doing some searches and have good info but i would like direct answers to my questions.
I have a 02 z06 w/125k on the clock. stock everything except varram.
I want to stroke current set up to a 427.
-what headers will be best. size ect...
-clutch set up?
-fuel changes? injectors, pumps, ect...
basically any thing i can gather up on the used side before i get the engie built.
Also would not mind putting a SC set up on but that will have to wait.
this is not a daily driver.
Any advice?
I have a 02 z06 w/125k on the clock. stock everything except varram.
I want to stroke current set up to a 427.
-what headers will be best. size ect...
-clutch set up?
-fuel changes? injectors, pumps, ect...
basically any thing i can gather up on the used side before i get the engie built.
Also would not mind putting a SC set up on but that will have to wait.
this is not a daily driver.
Any advice?
Burning Brakes
Joined: Nov 2006
Posts: 1,071
Likes: 0
From: Goose Creek SC
I ve been doing some searches and have good info but i would like direct answers to my questions.
I have a 02 z06 w/125k on the clock. stock everything except varram.
I want to stroke current set up to a 427.
-what headers will be best. size ect...
-clutch set up?
-fuel changes? injectors, pumps, ect...
basically any thing i can gather up on the used side before i get the engie built.
Also would not mind putting a SC set up on but that will have to wait.
this is not a daily driver.
Any advice?
I have a 02 z06 w/125k on the clock. stock everything except varram.
I want to stroke current set up to a 427.
-what headers will be best. size ect...
-clutch set up?
-fuel changes? injectors, pumps, ect...
basically any thing i can gather up on the used side before i get the engie built.
Also would not mind putting a SC set up on but that will have to wait.
this is not a daily driver.
Any advice?
Can't help you on the clutch.
A set of SVO/Bosch or Delphi/lucas 42# injectors should work for you. These injectors get their flow rated at 43.5 of fuel pressure. So on our cars with our elevated fuel pressure, they probably will compare close to a 48lb injector.
BTW, if using your existing block, your gonna have to re-sleeve your block for a larger bore. Keeping your existing 3.9 bores will be detrimental to the intake valve flow of the larger valve head you would need for this build.
Hammer
Burning Brakes
Joined: Nov 2002
Posts: 1,164
Likes: 184
From: Ohio
I ve been doing some searches and have good info but i would like direct answers to my questions.
I have a 02 z06 w/125k on the clock. stock everything except varram.
I want to stroke current set up to a 427.
-what headers will be best. size ect...
-clutch set up?
-fuel changes? injectors, pumps, ect...
basically any thing i can gather up on the used side before i get the engie built.
Also would not mind putting a SC set up on but that will have to wait.
this is not a daily driver.
Any advice?
I have a 02 z06 w/125k on the clock. stock everything except varram.
I want to stroke current set up to a 427.
-what headers will be best. size ect...
-clutch set up?
-fuel changes? injectors, pumps, ect...
basically any thing i can gather up on the used side before i get the engie built.
Also would not mind putting a SC set up on but that will have to wait.
this is not a daily driver.
Any advice?
I thought it required a new block and bigger displacement
Safety Car
Joined: Jan 2004
Posts: 3,515
Likes: 17
From: Keller, TX
St. Jude Donor '07
I've been considering some similar options... think for a 427, I'd go with an LS7 short block at $5300 or so. Sleeved LS1/2s are not to far from that depending on the vendor.
402 w/L76/L92 is a very cost effective combo. Think you'd save 12-1500 on the short block.
Check the F/I section for some good clutch discussions.
402 w/L76/L92 is a very cost effective combo. Think you'd save 12-1500 on the short block.
Check the F/I section for some good clutch discussions.
Thread Starter
Racer
Joined: Mar 2006
Posts: 277
Likes: 1
From: Springfield Missouri
block
My mistake i thought that the block could take that bore., what bore would the oe block take but still be a noticeable gain. I did a 383 on my LT-1 and was not satisfied.
-so to re-cap seems consensus is to go w/aftermarket block for the 427? and then the fuel injection ect.. will fit on that block. no changes to the fuel system other than injectors?
-so to re-cap seems consensus is to go w/aftermarket block for the 427? and then the fuel injection ect.. will fit on that block. no changes to the fuel system other than injectors?
Drifting
Joined: Jul 2004
Posts: 1,713
Likes: 2
My mistake i thought that the block could take that bore., what bore would the oe block take but still be a noticeable gain. I did a 383 on my LT-1 and was not satisfied.
-so to re-cap seems consensus is to go w/aftermarket block for the 427? and then the fuel injection ect.. will fit on that block. no changes to the fuel system other than injectors?
-so to re-cap seems consensus is to go w/aftermarket block for the 427? and then the fuel injection ect.. will fit on that block. no changes to the fuel system other than injectors?
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Race Director
Joined: Sep 2005
Posts: 11,060
Likes: 291
From: Pasco WA
My mistake i thought that the block could take that bore., what bore would the oe block take but still be a noticeable gain. I did a 383 on my LT-1 and was not satisfied.
-so to re-cap seems consensus is to go w/aftermarket block for the 427? and then the fuel injection ect.. will fit on that block. no changes to the fuel system other than injectors?
-so to re-cap seems consensus is to go w/aftermarket block for the 427? and then the fuel injection ect.. will fit on that block. no changes to the fuel system other than injectors?
I think I read somewhere that a LS1-6 block can only take about an.010 overbore. Not worth the trouble unless it's fixable damage. And I think the max stroke is 4". BTW, the injectors fit on the intake manifold, the block has nothing to do with fitment. Which intake manifold you choose will depend on which block configuration you decide on.
Burning Brakes
Joined: Mar 2003
Posts: 874
Likes: 0
From: Bonita CA
I beleive the simplest and most cost effective route would be a forged LS7 short block with a stroked LS1 crank. You can rework your 243 heads to work with this combo as well. And yes, you will need to go to larger injectors. Sell your old LS6 short block to recoupe some of the cost.
Thread Starter
Racer
Joined: Mar 2006
Posts: 277
Likes: 1
From: Springfield Missouri
I was thinking of taking the car to Texas speed, finish line in IL, or thunder racing in LA. B/c i live in Springfield Mo. seems there is a lack of providers. All those guys seem good to go through. I am sure they could help me but i am trying to gather what i will need over time. i plan on having this done in about a year so i want the wallet rape to be gradual not all at once and traumatic.
Racer
Joined: Aug 2005
Posts: 458
Likes: 4
anyone of those shops you are looking to take your car to are our dealers. They will be able to point you in the right direction. I would go for our 1 7/8 x 3 with our all new merge. and our 3 x 3 x pipe. If you have any ? call me at 1 866 586 kook ext 308