arronm Dropping a turd Gold Donating Members 9,520 Member For: 17y 2m 20d Gender: Male Location: Perth Posted 27/02/18 01:30 PM Share Posted 27/02/18 01:30 PM (edited) True. I am talking 350 chevs in the mid 80s. You probably weren't even born In fact when I was swinging spanners on cars and bikes most of the dudes on this forum weren't even born Young spuds hey, you don't realize how good you got it these days. I couldn't Google sh*t. Just had to sort it out myself. Edited 27/02/18 01:36 PM by arronm 1 Link to comment Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 29,140 Member For: 16y 9m 6d Gender: Male Location: Melbourne Posted 27/02/18 01:35 PM Share Posted 27/02/18 01:35 PM of course E85 makes a difference.. a big one... but you're right with the birth stats, but that's irrelevant..., we have it great power is easily made these days with race fuel at the bowser Link to comment Share on other sites More sharing options...
tazzanz Donating Members 573 Member For: 9y 5m 15d Gender: Male Location: NZ Posted 27/02/18 03:35 PM Share Posted 27/02/18 03:35 PM Surprised he didn't list his engineering degree I really don’t want to reference this post by Dynomite performance again but here we go. Just because a Barra can make 1000hp with stock cams, does not mean cams will do nothing for performance. Surely the guy who owns the worlds fastest Barra would have some idea? It’s like everyone on this forum hates cams Link to comment Share on other sites More sharing options...
Puffwagon Trust me bro... Gold Donating Members 16,057 Member For: 9y 11m 17d Gender: Male Location: South Australia Posted 27/02/18 09:21 PM Share Posted 27/02/18 09:21 PM 7 hours ago, k31th said: sounds like it would just shift the powerband, in that sort of "old days" application, wouldn't it? upping compression would definitely work, but it's not used in this scenario. 7 hours ago, arronm said: True. Both statements are untrue and the principles in discussion are no different now than they were in the "old days". Do you even compression bros? Do you even camshaft? Cams don't just shift the powerband and "upping the compression" definitely played a part in the car making more power with the progressive dyno runs. Adding boost is raising the dynamic compression ratio and using different cams can raise or lower compression as well as change flow characteristics. 7 hours ago, arronm said: I couldn't Google sh*t. Just had to sort it out myself. Google wasn't around when I was younger either. Here's a google search for the pair of ya anyone to read about compression ratios and camshafts. Here's another one to help with understanding flow. 1 Link to comment Share on other sites More sharing options...
arronm Dropping a turd Gold Donating Members 9,520 Member For: 17y 2m 20d Gender: Male Location: Perth Posted 27/02/18 10:34 PM Share Posted 27/02/18 10:34 PM Major difference between boosted cars and N/A. Cams DO shift the power and torque curve. No "progressive dyno runs" back in the day, cause WHO had a dyno. Link to comment Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 29,140 Member For: 16y 9m 6d Gender: Male Location: Melbourne Posted 27/02/18 10:47 PM Share Posted 27/02/18 10:47 PM 6 hours ago, tazzanz said: *fb pic* without the "rest" of that post, it's useless in this context. To me, in that post, he was clearly "marketing" a product... he didn't provide any other information regarding what actually changed between those runs and never would. Link to comment Share on other sites More sharing options...
Puffwagon Trust me bro... Gold Donating Members 16,057 Member For: 9y 11m 17d Gender: Male Location: South Australia Posted 27/02/18 10:59 PM Share Posted 27/02/18 10:59 PM 1 hour ago, Puffwagon said: Cams don't just shift the powerband Implying that's not all they do, in response to k31ths post. 16 minutes ago, arronm said: Cams DO shift the power and torque curve. I didn't say they don't do that. See above. 16 minutes ago, arronm said: "progressive dyno runs" 11 hours ago, DC-Auto said: 9.7psi = 524rwhp 14psi = 571rwhp 16psi = 593rwhp 17psi = 609rwhp There is the example I was referring to. 16 minutes ago, arronm said: WHO had a dyno. The eddy current dyno was invented about 85 to 90 years ago so they were around "back in the day". Anyways...that was more explaining than I cared to do and I can see this thread getting derailed any moment. Link to comment Share on other sites More sharing options...
arronm Dropping a turd Gold Donating Members 9,520 Member For: 17y 2m 20d Gender: Male Location: Perth Posted 27/02/18 11:53 PM Share Posted 27/02/18 11:53 PM To make big big power you need RPM. To make RPM you need modified cams. It's always been the same. 2 Link to comment Share on other sites More sharing options...
Puffwagon Trust me bro... Gold Donating Members 16,057 Member For: 9y 11m 17d Gender: Male Location: South Australia Posted 28/02/18 12:01 AM Share Posted 28/02/18 12:01 AM Yep that I can agree with. I think the general argument behind barra motors not needing bigger cams is that they are already sufficient for 90% of street cars. Also there is a lot of work (full forged rebuild at a minimum) that needs to be done to make big cams work properly and reliably in a barra motor. Link to comment Share on other sites More sharing options...
arronm Dropping a turd Gold Donating Members 9,520 Member For: 17y 2m 20d Gender: Male Location: Perth Posted 28/02/18 12:25 AM Share Posted 28/02/18 12:25 AM True. Street cars don't really require modified cams Spoils the drive and the fuel consumption. Totally different for a track car. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now