And Randy is good people 
LS2 427- anyone ?
Thread Starter
Instructor
Joined: Feb 2005
Posts: 151
Likes: 0
From: Mesa AZ
LS2 427- anyone ?
There seems to be quite a few of the 402 projects starting up. What about a dry sleeved LS2 based 427 ? 
I know a few of the vendors have the shortblock available, but has anyone done the upgrade ? Pros or cons ? I am looking for N/A 550 rwhp/tq, and the #'s from the 402 setups seem to fall short. Besides the extra hp/tq, doesn't a 2002 EB 427 ZO6 have a nice ring to it?
I know a few of the vendors have the shortblock available, but has anyone done the upgrade ? Pros or cons ? I am looking for N/A 550 rwhp/tq, and the #'s from the 402 setups seem to fall short. Besides the extra hp/tq, doesn't a 2002 EB 427 ZO6 have a nice ring to it?
Former Vendor
Joined: Feb 2004
Posts: 9,615
Likes: 13
From: Burlington NC
We have built a few 418 out of the ls2 block. Using a longer stroke crank. They have made good power. 480 to the ground in a Auto truck with 22 inch heavy wheels. They did some more exhaust work, and need to tune it again. I can't wait until we hear that 3 inch exhaust! We have a different one going in a vette, only time will tell.
Randy
Randy
Team Owner
Joined: Jul 2003
Posts: 20,474
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From: Detroit
Supporting Tuner
Joined: Sep 2004
Posts: 51,896
Likes: 39
From: ================== Houston, Texas www.englandgreen.com ================== Necessary Evil™ __________
CI 6-7-8-9-10 Veteran
St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12-'13-'14
Pro
Joined: Apr 2003
Posts: 690
Likes: 1
From: Houston Tx
At present, we have several dry sleeved 427 LS2 engines in service and several more being built. We've seen rwhp figures from these motors from 515 to 540 dependent on horsepower and if installed here at MTI, we offer the industry's best warranty - 2 years/24,000 miles.
If you're interested, please PM me or give me a call at the shop (281) 870-8787 and I'll be glad to discuss this with you in more detail.
Thanks and best regards,
David Coates
MTI
Houston, TX
If you're interested, please PM me or give me a call at the shop (281) 870-8787 and I'll be glad to discuss this with you in more detail.
Thanks and best regards,
David Coates
MTI
Houston, TX
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Burning Brakes
Joined: Sep 2001
Posts: 1,173
Likes: 1
From: Aguila AZ
I am running a 422 cid LS2 in my road race car and I lean on it heavily (many 20 minute maximum effort sessions). It uses the stock sleeves bored .030" over with a 4.125" crank. This is an awesome combination and does not require any resleeving to accomplish. When I built this engine I sonic tested the block and I could have easily bored the block to 4.060" using the stock sleeves. This bore and the 4.125" stroke equals 427 cid... Wish I had done it but I chose to use some 4.030" pistons that were intended for an iron block instead..
Shirl Dickey
SD Racing Enterprises
Aguila, AZ
Shirl Dickey
SD Racing Enterprises
Aguila, AZ
Thread Starter
Instructor
Joined: Feb 2005
Posts: 151
Likes: 0
From: Mesa AZ
Thanks for the feedback. This should be a strong, and hopefully, dependable, N/A motor. My cylinder head choice, AFR 225 vs. LS7, and cam selections are still up in the air. The hot summers, and 91 octane gas may force me towards a more conservative setup. We'll see.
