Another JY LS 5.3 in the 8's! (8.93 @ 153)
11-02-2013, 09:27 PM
#21
Hit the 8's!
Made 3 passes. New best... 8.93 @ 153. Boost peaked at 25.8lbs. 22-23lbs through most of the run.... 15* of timing in the 24psi + range.
Went to make a final pass and the car died on the line. Did the burn out fine, hit the T-brake and made about 15lbs, and it shut off. Something locked up, not sure if its motor or trans/converter yet. Had to tow it home.
Oh well, had a great year this was the most fun I've had drag racing in a long time!
Made 3 passes. New best... 8.93 @ 153. Boost peaked at 25.8lbs. 22-23lbs through most of the run.... 15* of timing in the 24psi + range.
Went to make a final pass and the car died on the line. Did the burn out fine, hit the T-brake and made about 15lbs, and it shut off. Something locked up, not sure if its motor or trans/converter yet. Had to tow it home.
Oh well, had a great year this was the most fun I've had drag racing in a long time!
11-04-2013, 09:12 PM
#25
I'm working on a stock bottom end 5.3l twin setup in a 54 Chevy pickup. It's got a LS7 cam in it just because I had it left over from a 67 Camaro LS7 project. With the LS7 cam I only had .060 piston to valve on the exhaust side so I had to cut a small valve pocket in the piston. Do you know what the p-v is with the LS9 cam?
11-04-2013, 09:14 PM
#26
Man that's awesome! Stock rod bolts?
I'm working on a stock bottom end 5.3l twin setup in a 54 Chevy pickup. It's got a LS7 cam in it just because I had it left over from a 67 Camaro LS7 project. With the LS7 cam I only had .060 piston to valve on the exhaust side so I had to cut a small valve pocket in the piston. Do you know what the p-v is with the LS9 cam?
I'm working on a stock bottom end 5.3l twin setup in a 54 Chevy pickup. It's got a LS7 cam in it just because I had it left over from a 67 Camaro LS7 project. With the LS7 cam I only had .060 piston to valve on the exhaust side so I had to cut a small valve pocket in the piston. Do you know what the p-v is with the LS9 cam?
Build thread
https://ls1tech.com/forums/conversio...93-153mph.html
11-18-2013, 04:53 PM
#32
Yeah that makes since, I currently have both just trying to see if i should sell the ls6 and put that money into porting my heads or something.
01-27-2014, 01:30 PM
#34
I think the timing chain let go, pistons/rods were great. The ones that survived at least. The 2-step rev limiter hammers the crap out of the timing chain. I was using OEM old timing components with alot of slop in them. Stinks I really think I could have run this motor even harder.
Junked the Gen3 motor. Going with a $500 Gen4 alum block 5.3 this season. It's ready to drop in... Using a nice Cloyes roller aftermarket chain and damper this time around!
Junked the Gen3 motor. Going with a $500 Gen4 alum block 5.3 this season. It's ready to drop in... Using a nice Cloyes roller aftermarket chain and damper this time around!
Last edited by Forcefed86; 04-01-2014 at 01:58 PM.
07-11-2014, 02:19 PM
#36
Oddly enough the new motor doesn't run much better (if any better) than the last.
This years motor...
10:1 VS last years 8.6:1 compression last year
212/212 @ 112 aftermarket cam VS the ZR1 cam last year
243 heads VS the 317 heads last year.
Same turbo maxed out at 25lbs trapped 155 this year VS last years best of 153.
This years block is roughly 80lbs lighter as well.
This years motor...
10:1 VS last years 8.6:1 compression last year
212/212 @ 112 aftermarket cam VS the ZR1 cam last year
243 heads VS the 317 heads last year.
Same turbo maxed out at 25lbs trapped 155 this year VS last years best of 153.
This years block is roughly 80lbs lighter as well.
