615hp LS3 427 longblock
Thread Starter
Former Vendor
Joined: Jan 2007
Posts: 1,584
Likes: 17
From: Lubbock Tx
615hp LS3 427 longblock
We receive so many requests for this engine that we have decided to start stocking them as longblocks!
615hp LS3 427 - $7999 shipped!
LS3 blocks with bronze lifter bushings
Manley 4.100” stroke crankshaft
Scat 6.100” Rods (24X)
Eagle 6.100” Rods (58X)
Manley -7cc 4.068” bore flat top pistons
Ackerly moly rings
Clevite “H’ series rod and main bearings
Durabond cam bearings
SDPC custom roller cam 236/248 – 601/615 – 112
LS7 lifters
N-MOTION billet timing set
ARP cam bolts
LS2 front cover W/cam sensor
SD3964B ported oil pump
Assembled rear cover installed
LS2 valley cover (24X)
LS3 valley cover (58X)
Manley Pushrods
Stock rockers
LS3 CNC heads with PAC 1211X springs
24x engines include the necessary cam/knock sensor harness.
These are in stock and ready to ship immediately, no wait at all!
Jesse - (800)456-0211
If you have any questions feel free to give me a call.
615hp LS3 427 - $7999 shipped!
LS3 blocks with bronze lifter bushings
Manley 4.100” stroke crankshaft
Scat 6.100” Rods (24X)
Eagle 6.100” Rods (58X)
Manley -7cc 4.068” bore flat top pistons
Ackerly moly rings
Clevite “H’ series rod and main bearings
Durabond cam bearings
SDPC custom roller cam 236/248 – 601/615 – 112
LS7 lifters
N-MOTION billet timing set
ARP cam bolts
LS2 front cover W/cam sensor
SD3964B ported oil pump
Assembled rear cover installed
LS2 valley cover (24X)
LS3 valley cover (58X)
Manley Pushrods
Stock rockers
LS3 CNC heads with PAC 1211X springs
24x engines include the necessary cam/knock sensor harness.
These are in stock and ready to ship immediately, no wait at all!
Jesse - (800)456-0211
If you have any questions feel free to give me a call.
Last edited by SDPC; Jun 21, 2012 at 09:24 AM.
Thread Starter
Former Vendor
Joined: Jan 2007
Posts: 1,584
Likes: 17
From: Lubbock Tx
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Burning Brakes
Joined: May 2012
Posts: 812
Likes: 1
so everything else is transferred from my LS3 and dropped right back in???
any chance for a little more head work and cam to squeeze out a little more power???
also im assuming the 615 horses are with the stock manifolds, intakes???
also what would you say about running E85 on this motor???
thanks
any chance for a little more head work and cam to squeeze out a little more power???
also im assuming the 615 horses are with the stock manifolds, intakes???
also what would you say about running E85 on this motor???
thanks
Safety Car
Joined: Oct 2006
Posts: 3,602
Likes: 3
From: Cincinnati OH
Hopefully SDPC will be back in to clarify, but usually these crate motors are dyno'd with a generous carborated manifold setup to get peak numbers/airflow and for ease of dyno testing.
IF that is the case here - which I suspect given the application towards hot rods in general - then I would expect noticeably less HP from our more restrictive intakes.
IF that is the case here - which I suspect given the application towards hot rods in general - then I would expect noticeably less HP from our more restrictive intakes.
Thread Starter
Former Vendor
Joined: Jan 2007
Posts: 1,584
Likes: 17
From: Lubbock Tx
HP numbers are assuming typical in vehicle applications, no tricks. This means LS3 style intake and headers. This particular setup was dyno'd using a stock L76 intake. The engine dyno sheet is at the bottom of this post. It's actually a sheet where we tested non-CNC heads vs CNC heads on this particular engine.
I'd love to estimate rwhp for you guys but it can vary so much car to car and dyno to dyno that it's not fair to try to do so. The most recent installation at an independent third party shop made 520rwhp in an automatic C5 (3200 converter).
Whileas I can not guarantee rwhp results, I can guarantee that the 615hp claim is honest and utilizes no tricks.
I'd love to estimate rwhp for you guys but it can vary so much car to car and dyno to dyno that it's not fair to try to do so. The most recent installation at an independent third party shop made 520rwhp in an automatic C5 (3200 converter).
Whileas I can not guarantee rwhp results, I can guarantee that the 615hp claim is honest and utilizes no tricks.
Thread Starter
Former Vendor
Joined: Jan 2007
Posts: 1,584
Likes: 17
From: Lubbock Tx
Typo, fixed. Not a big deal.
Responded to your PMs 
so everything else is transferred from my LS3 and dropped right back in???
any chance for a little more head work and cam to squeeze out a little more power???
also im assuming the 615 horses are with the stock manifolds, intakes???
also what would you say about running E85 on this motor???
thanks
any chance for a little more head work and cam to squeeze out a little more power???
also im assuming the 615 horses are with the stock manifolds, intakes???
also what would you say about running E85 on this motor???
thanks
Safety Car
Joined: Oct 2006
Posts: 3,602
Likes: 3
From: Cincinnati OH
HP numbers are assuming typical in vehicle applications, no tricks. This means LS3 style intake and headers. This particular setup was dyno'd using a stock L76 intake. The engine dyno sheet is at the bottom of this post. It's actually a sheet where we tested non-CNC heads vs CNC heads on this particular engine.
I'd love to estimate rwhp for you guys but it can vary so much car to car and dyno to dyno that it's not fair to try to do so. The most recent installation at an independent third party shop made 520rwhp in an automatic C5 (3200 converter).
Whileas I can not guarantee rwhp results, I can guarantee that the 615hp claim is honest and utilizes no tricks.
I'd love to estimate rwhp for you guys but it can vary so much car to car and dyno to dyno that it's not fair to try to do so. The most recent installation at an independent third party shop made 520rwhp in an automatic C5 (3200 converter).
Whileas I can not guarantee rwhp results, I can guarantee that the 615hp claim is honest and utilizes no tricks.
You'll definitely be on my short list, should I ever need a new motor... Lol.
