| Re: 1969 L-89 - need advice choosing a cam |
Subject: Re: 1969 L-89 - need advice choosing a cam by rklessdriver on 2017/1/26 21:13:34 I don't have any dyno of that cam in a BBC. Most of the BBC's we build are very serious engines and the customer base isn't very interested in me giving out their info... not that it could be applied to what you are doing anyway. We do build a few street type SBC's that use hyd roller cams.... So I do have similar grinds in a couple 383 cubic inch SBC's that I can link dyno and track results to. Both of these are C4 Corvettes with 4L60 auto transmissions, 3000 stall converters and D44 IRS rear ends. The first one was pretty mild build with 11.2 compression and AFR 195 street heads. He engine dyno'd it and then later put it on a chassis dyno when he was having the EFI tuned. 530HP@6100RPM (Stuska Engine Dyno) 411RWHP@6400RPM (Duno Jet chassis dyno) http://www.corvetteforum.com/forums/c ... 9-383-afr-195-dyno-s.html The second had better AFR 210 cyl head and 11.5 compression. It's only been on a chassis dyno when it had the EFI tuned. 463RWHP@6300RPM (Dyno Jet chassis dyno) http://www.corvetteforum.guru/modules ... id=214682#forumpost214682 The first car has run 11.40 @ 120MPH in the 1/4. The second car has run 11.19 @ 125MPH in the 1/4 mile. http://www.corvetteforum.guru/modules ... id=223403#forumpost223403 And let me tell you.... both of these cars hit a nice lick at idle but drive like pussy cats until you open the throttle wide open.... then they get down. Now the first guy has a buddy with a 69 Nova I also did a cam for. 11.1 383 SBC AFR 195's. Carb'd engine, single AED 750. TH400 3800rpm stall with 4.11 gears. The cam I did for it is the identical lobe set to what I recommended for your dads 427 but on different lobe centers. That car has been 11.00's @ 120MPH in the 1/4. I have a similar grind going in the 496 BBC I am currently building for my 72 Corvette. I'm building it to be a replica of a stock appearing 71 LS-6 BBC. I'm expecting that it will make about 625HP but it will be a really good piece that will have a lot of little tricks in it. Will |
