LS2 402 power
Former Vendor
Joined: May 2005
Posts: 3,749
Likes: 4
From: Valencia Ca
[QUOTE=69]
Sure..
11.2:1 Compression
AFR 225's
244-248 112 Comp Cam
Fast 90 & LS2 90 TB
T&D rockers
1 7/8" Kooks
Originally Posted by CharlieTuner@AandACorvette
Our highest 402 to date, with AFR 225 heads, 533 RWHP 488 RWT
Nice numbers, I like that TQ Curve. Can you post the Mechanical Specs of this engine?
Kevin
Nice numbers, I like that TQ Curve. Can you post the Mechanical Specs of this engine?
Kevin
11.2:1 Compression
AFR 225's
244-248 112 Comp Cam
Fast 90 & LS2 90 TB
T&D rockers
1 7/8" Kooks
Pro
Joined: Jul 2005
Posts: 671
Likes: 16
From: Plano TX
I watched Texas Texas Speed and Performance build one with 519RWHP with a monster cam and their own heads with F.A.S.T LSX 90mm, LS2 Throttle Body, watched all the DYNO runs myself, wasn't my car but the owner is one Lucky SOB!!!, I was having a 383 Stroker put in and wish I would have gone the Texas Speed and Performance 402. Call Jason up there and he can give you all the specs.
Safety Car
Joined: Apr 2004
Posts: 3,818
Likes: 4
From: San Bruno ca
I just finished up my econo 402 build and had a tune
ls2 short block with a baby cam 226/226 lsa 112 6.00 lift $4,300 from SDPC (includes cam and install of cam and valley covers. front covers, timing chain, and shipping to my door within a week from ordering.)
and patriot heads stage 2 $1,250 (includes prc gold dual springs and stage 2 port and shiping to front door.
ls6 intake, ported tb, kooks lt, (off of old motor)
cost of parts $5,550
Install about $1,700 includes new studs and gasgets plus odds and ends stuff.
Tune By Synergy
done on a dyno pak "Priceless" 
(well not really, $400 but well worth it)
Total cost 7,600.
473 RWHP
489 RWTQ
And best of all still Cal smog legal (well at least the sniffter part)
There you have it a good motor for a good price with pretty good power. all for about $7,600 Plus you will still have your old short block that you could sell.
ls2 short block with a baby cam 226/226 lsa 112 6.00 lift $4,300 from SDPC (includes cam and install of cam and valley covers. front covers, timing chain, and shipping to my door within a week from ordering.)
and patriot heads stage 2 $1,250 (includes prc gold dual springs and stage 2 port and shiping to front door.
ls6 intake, ported tb, kooks lt, (off of old motor)
cost of parts $5,550
Install about $1,700 includes new studs and gasgets plus odds and ends stuff.
Tune By Synergy
done on a dyno pak "Priceless" (well not really, $400 but well worth it)Total cost 7,600.
473 RWHP
489 RWTQ
And best of all still Cal smog legal (well at least the sniffter part)
There you have it a good motor for a good price with pretty good power. all for about $7,600 Plus you will still have your old short block that you could sell.
Pro
Joined: Aug 2005
Posts: 655
Likes: 1
From: Seminole FL
St. Jude Donor '12
Originally Posted by jhong321
I just finished up my econo 402 build and had a tune
ls2 short block with a baby cam 226/226 lsa 112 6.00 lift $4,300 from SDPC (includes cam and install of cam and valley covers. front covers, timing chain, and shipping to my door within a week from ordering.)
and patriot heads stage 2 $1,250 (includes prc gold dual springs and stage 2 port and shiping to front door.
ls6 intake, ported tb, kooks lt, (off of old motor)
cost of parts $5,550
Install about $1,700 includes new studs and gasgets plus odds and ends stuff.
Tune By Synergy done on a dyno pak "Priceless" (well not really, $400 but well worth it)
Total cost 7,600.
473 RWHP
489 RWTQ
And best of all still Cal smog legal (well at least the sniffter part)
There you have it a good motor for a good price with pretty good power. all for about $7,600 Plus you will still have your old short block that you could sell.
ls2 short block with a baby cam 226/226 lsa 112 6.00 lift $4,300 from SDPC (includes cam and install of cam and valley covers. front covers, timing chain, and shipping to my door within a week from ordering.)
and patriot heads stage 2 $1,250 (includes prc gold dual springs and stage 2 port and shiping to front door.
ls6 intake, ported tb, kooks lt, (off of old motor)
cost of parts $5,550
Install about $1,700 includes new studs and gasgets plus odds and ends stuff.
Tune By Synergy
done on a dyno pak "Priceless" (well not really, $400 but well worth it)Total cost 7,600.
473 RWHP
489 RWTQ
And best of all still Cal smog legal (well at least the sniffter part)
There you have it a good motor for a good price with pretty good power. all for about $7,600 Plus you will still have your old short block that you could sell.
Awesome numbers.
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Melting Slicks
Joined: Jan 2001
Posts: 2,635
Likes: 2
From: Aloha, Oregon
I will be installing and tuning one of Shirl Dickey's stroked LS2's into one of my customer's 2001 ZO6 in January (Jesse Connell aka Schpodie). Instead of 402cid, Shirl went ahead and did the 4.100 crank instead of the 4.000 crank (same cost for crank, just a bit more machine work) to yield 418cid. I will be re-using Jesse's LGM Stage 2 heads (absolute speed heads that flow awesome) but I will be unshrouding the valves a bit more out to 4.03 bore allowances + some touch up port work. The secret to this package is the sick cam Shirl and I designed for Jesse- something like 252/260 .645/.645 113lsa on a Comp Cam XE-M lobe design. If we dont see something north of 525rwhp and nuts torque, something is wrong. Jesse will have his hands full at the strip this coming spring.
These 402s are a god-send for sure. Everyone can afford a stroker motor now. But things are about to get even better. GM will be releasing their 6.2L L92 engine soon for production truck/SUV line. This block will basically be identical to the LS2 except it will have 4.065 bores rather than 4.00. Therefore, building a 427 will cost the same as the current prices on the 402s. Nice.
Robert
www.gen3motorsports.com
These 402s are a god-send for sure. Everyone can afford a stroker motor now. But things are about to get even better. GM will be releasing their 6.2L L92 engine soon for production truck/SUV line. This block will basically be identical to the LS2 except it will have 4.065 bores rather than 4.00. Therefore, building a 427 will cost the same as the current prices on the 402s. Nice.
Robert
www.gen3motorsports.com
Former Vendor
Joined: Mar 2004
Posts: 1,518
Likes: 7
From: Valencia CA
Originally Posted by CharlieTuner@AandACorvette
Here's two more for you, both SD tune.
550 RWHP / 501 RWT - 256/264 cam
521 RWHP / 488 RWT - 239 - 242 cam
550 RWHP / 501 RWT - 256/264 cam
521 RWHP / 488 RWT - 239 - 242 cam
Nice job on both.
Here is a link to the 550 RWHP thread which includes the dyno gragh....
http://forums.corvetteforum.com/show...156&forum_id=1
There have been alot of 402/408 build-ups with AFR 225's that have produced in excess of 500 RWHP....alot of them in the low/mid 500 range with somewhat aggresive hyd. rollers (24X/25X duration). Check some of the dyno sections of a few of the other popular LS1 sites as well.
Hope this helps...
Tony M.
Race Director
Joined: Nov 2003
Posts: 16,066
Likes: 4,149
From: Bergen county NJ
These 402s are a god-send for sure. Everyone can afford a stroker motor now. But things are about to get even better. GM will be releasing their 6.2L L92 engine soon for production truck/SUV line. This block will basically be identical to the LS2 except it will have 4.065 bores rather than 4.00. Therefore, building a 427 will cost the same as the current prices on the 402s. Nice.
Robert
www.gen3motorsports.com
this looks to be the best way to go.............
Robert
www.gen3motorsports.com
this looks to be the best way to go.............
Former Vendor
Joined: May 2005
Posts: 3,749
Likes: 4
From: Valencia Ca
Originally Posted by JerriVette
These 402s are a god-send for sure. Everyone can afford a stroker motor now. But things are about to get even better. GM will be releasing their 6.2L L92 engine soon for production truck/SUV line. This block will basically be identical to the LS2 except it will have 4.065 bores rather than 4.00. Therefore, building a 427 will cost the same as the current prices on the 402s. Nice.
Robert
www.gen3motorsports.com
this looks to be the best way to go.............
Robert
www.gen3motorsports.com
this looks to be the best way to go.............
The 402 is a bargain and the 6.2 liter motor will be even better...
Happy Holidays,
Charlie
Le Mans Master
Joined: Oct 2002
Posts: 6,799
Likes: 11
From: dudley MA
Originally Posted by JerriVette
These 402s are a god-send for sure. Everyone can afford a stroker motor now. But things are about to get even better. GM will be releasing their 6.2L L92 engine soon for production truck/SUV line. This block will basically be identical to the LS2 except it will have 4.065 bores rather than 4.00. Therefore, building a 427 will cost the same as the current prices on the 402s. Nice.
Robert
www.gen3motorsports.com
this looks to be the best way to go.............
Robert
www.gen3motorsports.com
this looks to be the best way to go.............
Pro
Joined: Aug 2005
Posts: 655
Likes: 1
From: Seminole FL
St. Jude Donor '12
Originally Posted by JerriVette
These 402s are a god-send for sure. Everyone can afford a stroker motor now. But things are about to get even better. GM will be releasing their 6.2L L92 engine soon for production truck/SUV line. This block will basically be identical to the LS2 except it will have 4.065 bores rather than 4.00. Therefore, building a 427 will cost the same as the current prices on the 402s. Nice.
Robert
www.gen3motorsports.com
this looks to be the best way to go.............
Robert
www.gen3motorsports.com
this looks to be the best way to go.............
Pro
Joined: Oct 2004
Posts: 514
Likes: 2
Originally Posted by CharlieTuner@AandACorvette
I bet you are right.
Our new 3" exhaust project was launched on the premise that there was a significant power increase to be had (specifically on strokers and supercharged apps) and the results of that project have been impressive!
We built a solid baseline number around a 402, AFR heads, Kooks 1 7/8" heades, high flow cats, 3" x-pipe, and B&B Bullets. Tuning was optimized and we maxed @ 487 RWHP / 452 RWT
Next, we pulled the cat back completely off and re-tuned - we maxed @ 499 RWHP / 464 RWT
Finally, we installed our 3" system and re-tuned - the results were interesting...we maxed @ 501 RWHP / 467 RWT
Charlie
Our new 3" exhaust project was launched on the premise that there was a significant power increase to be had (specifically on strokers and supercharged apps) and the results of that project have been impressive!
We built a solid baseline number around a 402, AFR heads, Kooks 1 7/8" heades, high flow cats, 3" x-pipe, and B&B Bullets. Tuning was optimized and we maxed @ 487 RWHP / 452 RWT
Next, we pulled the cat back completely off and re-tuned - we maxed @ 499 RWHP / 464 RWT
Finally, we installed our 3" system and re-tuned - the results were interesting...we maxed @ 501 RWHP / 467 RWT
Charlie