In a way yes. The ZR1 has different heads, with stronger internals and I believe tvs 2300 while the LSA motor has a 1900 and about 60 hp more than the ZL1.
1 2:45.9 MOSLER MT900S LL3 11/08
2 2:48.6 DODGE VIPER SRT10 ACR LL3 11/08
3 2:49.8 MOSLER PHOTON LL5 2/11
4 2:49.8 CHEVROLET CORVETTE ZR1 LL3 2/10
5 2:51.8 LAMBORGHINI GALLARDO LP570-4 SUPERLEGGERA LL5 2/11
6 2:52.3 KTM X-BOW LLU 2/10
7 2:53.5 CHEVROLET CORVETTE Z06 (Z07) LL3 2/11
8 2:53.9 LAMBORGHINI MURCIÉLAGO LP670-4 SV LL5 2/10
9 2:54.6 FERRARI 430 SCUDERIA LL5 11/08
10 2:55.6 NISSAN GT-R LL3 11/08
11 2:55.9 PORSCHE 911 GT3 RS LL4 2/11
12 2:57.4 DODGE VIPER SRT10 LL3 10/07
13 2:57.5 PORSCHE 911 TURBO S LL4 2/11
14 2:57.6 ARIEL ATOM 3 LLU 2/10
15 2:58.0 MERCEDES-BENZ SLS AMG LL4 2/11
16 2:58.2 CHEVROLET CORVETTE Z06 LL3 8/07
17 2:58.5 CHEVROLET CORVETTE GRAND SPORT LL2 2/10
18 2:59.0 NISSAN GT-R (all-season tires) LL3 11/08
19 2:59.5 AUDI R8 5.2 FSI LL4 2/10
20 3:00.7 FORD GT LL4 11/06
21 3:01.1 CHEVROLET CORVETTE Z06 LL3 11/06
22 3:01.2 CHEVROLET CORVETTE (Z51) LL2 11/08
23 3:01.6 DODGE VIPER SRT10 LL3 11/06
24 3:01.8 PORSCHE 911 GT3 LL3 8/07
25 3:03.6 CHEVROLET CORVETTE (Z51) LL2 8/07