500+ rwhp heads/cam?
02-03-2004, 05:58 PM
#1
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500+ rwhp heads/cam? Just the other day LG had posted one of their heads/cam pkgs. had dynoed 500+ rwhp, I was floored like everyone else. Well yesterday as I was getting my oil changed I picked up a November 2003 issue of HOT ROD and came across a real interesting article about a LG 427 solid roller C5.
For anyone who is about to purchase a LG Motorsports G7 or G7SR pkg., I say DO NOT DO IT!!! Their heads/cam pkg make 503 rwhp and their 427 solid-roller motors are only making 460-470 rwhp!?!
Don't believe me? If you have a November 2003 issue of HOT ROD magazine, check out the article on the dyno tests that were done at WERX Motorsports.
Randy Goss', LG built 427 solid roller C5, dynoed 466 rwhp and 471 rwtq. This was done on a dyno jet at WERX Motorsports. BTW, the cam specs. for the 427: 246/258 dur. .654"/.668" on a 110 lsa. It has LG 1 3/4" long-tubes with 32" primaries. It also has an LG modified LS6 intake.
Take this info. into consideration when you are thinking about purchasing a LG 427 over their heads/ cam pkg.
For anyone who is about to purchase a LG Motorsports G7 or G7SR pkg., I say DO NOT DO IT!!! Their heads/cam pkg make 503 rwhp and their 427 solid-roller motors are only making 460-470 rwhp!?!
Don't believe me? If you have a November 2003 issue of HOT ROD magazine, check out the article on the dyno tests that were done at WERX Motorsports.Randy Goss', LG built 427 solid roller C5, dynoed 466 rwhp and 471 rwtq. This was done on a dyno jet at WERX Motorsports. BTW, the cam specs. for the 427: 246/258 dur. .654"/.668" on a 110 lsa. It has LG 1 3/4" long-tubes with 32" primaries. It also has an LG modified LS6 intake.
Take this info. into consideration when you are thinking about purchasing a LG 427 over their heads/ cam pkg.
02-03-2004, 06:50 PM
#4
80-100 HP is a big difference. However I believe the 500 HP setup was with the LSX intake and 90mm TB. There could be a lack of air on the 427 in comparision to the H&C 500 HP car. Another thing that people seem to not compair is both cars were on different dyno's. We all know different dynos can sometimes equal different results.
Also if the motor was tired from Nitrous you will see some loss of power.
I went a year without changing a thing on my car and in that one year went from390 to 370 because of 70+ passes on a 200 shot with a stock bottom end.
Lastly I will add that compression might have came into play.
I didn't see the mag therefore I have no clue what compression ratio is however is it is lower than the H/C car there would be another loss of power.
I will agree that the results of the 427 are not very impressive at first glance however I believe we all know that LG does great work and produces power.
I am willing to bet that if compression were the same, the LSX and 90mm were on the 427, both were dynoed at the same place and the motor was fresh it would easily out due the H/C car.
Also if the motor was tired from Nitrous you will see some loss of power.
I went a year without changing a thing on my car and in that one year went from390 to 370 because of 70+ passes on a 200 shot with a stock bottom end.
Lastly I will add that compression might have came into play.
I didn't see the mag therefore I have no clue what compression ratio is however is it is lower than the H/C car there would be another loss of power.
I will agree that the results of the 427 are not very impressive at first glance however I believe we all know that LG does great work and produces power.
I am willing to bet that if compression were the same, the LSX and 90mm were on the 427, both were dynoed at the same place and the motor was fresh it would easily out due the H/C car.
