402 LS2 performance numbers
Thread Starter
Safety Car
Joined: Apr 2007
Posts: 3,582
Likes: 137
From: SoCal CA
402 LS2 performance numbers
Im about to get started on building a 402 stroker ls2. Just wondering, anyone out there with 402 setups? What cam and heads are you running and what numbers are you seeing(hp, trq, 1/4 times)?
Any pix? Always love some engine ****.
Any pix? Always love some engine ****.
Melting Slicks
Joined: Nov 2007
Posts: 2,780
Likes: 934
From: Indianapolis IN
The Z I purchased in December has a 402 in it with ported ETP LS7 style heads, LS7 intake, and a rather large Cartek cam (242/252 114LSA) and American Racing long tube headers through the stock Ti's. The dyno sheet that came with car shows 538RWHP and 489RWTQ. HP climbs steady all the way to 6500rpm, torque is about 440ft-lbs at 3000rpm and peaks at around 5200rpm, torque is above 425ft-lbs from 2500rpm all the way to 6500rpm. Amazing flat torque curve
Car is getting a different cat-back and some other small bits and pieces and will be retuned sometime in March. I have not driven the car much at all (stupid winter weather), but the few times I did drive it, it was very streetable and of course has more power than the tires can cope with. Sure is fun and I cant wait to get her out this Spring to stretch her legs!
Enjoy your 402 build!
Car is getting a different cat-back and some other small bits and pieces and will be retuned sometime in March. I have not driven the car much at all (stupid winter weather), but the few times I did drive it, it was very streetable and of course has more power than the tires can cope with. Sure is fun and I cant wait to get her out this Spring to stretch her legs!
Enjoy your 402 build!
Thread Starter
Safety Car
Joined: Apr 2007
Posts: 3,582
Likes: 137
From: SoCal CA
The Z I purchased in December has a 402 in it with ported ETP LS7 style heads, LS7 intake, and a rather large Cartek cam (242/252 114LSA) and American Racing long tube headers through the stock Ti's. The dyno sheet that came with car shows 538RWHP and 489RWTQ. HP climbs steady all the way to 6500rpm, torque is about 440ft-lbs at 3000rpm and peaks at around 5200rpm, torque is above 425ft-lbs from 2500rpm all the way to 6500rpm. Amazing flat torque curve
Car is getting a different cat-back and some other small bits and pieces and will be retuned sometime in March. I have not driven the car much at all (stupid winter weather), but the few times I did drive it, it was very streetable and of course has more power than the tires can cope with. Sure is fun and I cant wait to get her out this Spring to stretch her legs!
Car is getting a different cat-back and some other small bits and pieces and will be retuned sometime in March. I have not driven the car much at all (stupid winter weather), but the few times I did drive it, it was very streetable and of course has more power than the tires can cope with. Sure is fun and I cant wait to get her out this Spring to stretch her legs!
Enjoy your 402 build!
Race Director
Joined: Dec 2004
Posts: 13,760
Likes: 75
From: Haymarket VA
Here's a small cam "Gentleman's Cruiser". 380RWT at 2200rpm is just nuts. The tuner said the only way to get better throttle response is with a blower. The tip in at 2k or better justs roasts the rear tires. Not bad for an N/A build that drives like stock.
The tip in at 2k or better justs roasts the rear tires. Not bad for an N/A build that drives like stock.
Last edited by WKMCD; Feb 12, 2008 at 09:21 AM.
Le Mans Master
Joined: Aug 2007
Posts: 6,473
Likes: 297
From: Orange Park FL
402
http://forums.corvetteforum.com/show...&highlight=383
Pit-man
Last edited by pit-man; Feb 12, 2008 at 06:59 PM.
Instructor
Joined: Oct 2005
Posts: 141
Likes: 0
From: arlington tx
I did a 408 in my car. The reason I went with a 408 is it does not take the extra wiring the ls2 block does. The extra stuff comes up to about 600.00 if I remember correctly. The 80lbs savings did not seem worth the money to me.
The bottom end is from HKE in Houston, heads are trickflow 225's and the cam is 244/248 612/615 on a 112. I still need a fast 90 mm intake though. It made 478 rwhpand 441 rwtrq on a ls6 intake. With a 90mm intake its good for 500+rwhp which was my goal. The compression is only at 10.3. The plan was to put a 200 shot of nitrous on the car after I get the intake. Now I am thinking of selling the car and buying an 08 ls3 z51.
The bottom end is from HKE in Houston, heads are trickflow 225's and the cam is 244/248 612/615 on a 112. I still need a fast 90 mm intake though. It made 478 rwhpand 441 rwtrq on a ls6 intake. With a 90mm intake its good for 500+rwhp which was my goal. The compression is only at 10.3. The plan was to put a 200 shot of nitrous on the car after I get the intake. Now I am thinking of selling the car and buying an 08 ls3 z51.
Thread Starter
Safety Car
Joined: Apr 2007
Posts: 3,582
Likes: 137
From: SoCal CA
I did a 408 in my car. The reason I went with a 408 is it does not take the extra wiring the ls2 block does. The extra stuff comes up to about 600.00 if I remember correctly. The 80lbs savings did not seem worth the money to me.
The bottom end is from HKE in Houston, heads are trickflow 225's and the cam is 244/248 612/615 on a 112. I still need a fast 90 mm intake though. It made 478 rwhpand 441 rwtrq on a ls6 intake. With a 90mm intake its good for 500+rwhp which was my goal. The compression is only at 10.3. The plan was to put a 200 shot of nitrous on the car after I get the intake. Now I am thinking of selling the car and buying an 08 ls3 z51.
The bottom end is from HKE in Houston, heads are trickflow 225's and the cam is 244/248 612/615 on a 112. I still need a fast 90 mm intake though. It made 478 rwhpand 441 rwtrq on a ls6 intake. With a 90mm intake its good for 500+rwhp which was my goal. The compression is only at 10.3. The plan was to put a 200 shot of nitrous on the car after I get the intake. Now I am thinking of selling the car and buying an 08 ls3 z51.
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Instructor
Joined: Oct 2005
Posts: 141
Likes: 0
From: arlington tx
You are right about the more power from compression but it would be more stressful when on the nitrous. If I keep the car (it looks like I am) I will put a 90mm setup on it for sure. I already have a nitrous kit and the plate in it is for a 90mm setup. Just takes time and money. I have the time but not the money atm lol.
