Andre, Nothing wakes up a motor like a roller cam, except maybe a solid lifter cam. If you don't plan to drive all that much, you can get away with a solid lifter cam and annual (or longer) valve adjustments. If you want the drivability and not have to worry about adjusting valves every so often, you could go for a roller. Roller cams are a lot more expensive when you add in the retrofit lifters.
Even a conservative roller cam like the XR264HR bumps up the torque. Want 450 lb-ft from 2000 to 4000 RPM? Plus you get another 20 HP. Want to get more aggressive? The XR288HR drops a bunch of torque (but still over 400 from 3000 to 5000 RPM), but knocks HP up to 417 @ 5,500 RPM. All of this with the same heads you have. Upgrade to a more modern head like the World S/R Torquer and you can buy more performance. The head manufacturers can recommend cams to match, and the cam manufacturers can recommends cams for various heads and your setup and needs. For a great street setup, your intake is just fine. At some point you might need some more carburetor, but you could still use the 600 up to maybe 450 HP, maybe before. If you stay in the lower RPM band, then you don't need the bigger carburetor. But heads and cam can really make a difference. I'm looking for my roller cam, all forged small block to be over 450 HP and 475 TQ. This is with upgraded everything. My real goal is more than 350 HP at the rear wheels. If you want a goal for next year, research the heads out there and decide on one, then choose the right cam for (your wallet) the head, your car, and your style of driving and do that swap next. Buy new head bolts of you do this. It should only take you a weekend. Brad Waller ([EMAIL PROTECTED]) '66 Corvette | 327/dead | 4-speed | Wilwood Brakes | 245/45/16 BFGs '67 Chevelle | ex-SS396 | 355/700R4 | '79 F-Body Brakes > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Tigergutt > Sent: Saturday, December 20, 2003 6:09 AM > To: 'The Chevelle Mailing List' > Subject: RE: [Chevelle-list] My combo on desktop dyno. > > > Brad, > > What do I have to do to have moooooore, heads, cam, intake, carb ??? > Not that there are any money to be spent right now, I picked up my > Lincoln sp-170 a new gas bottle and some welding equipment yesterday, > but anyway ? > > > > Med Vennlig Hilsen/Kind Regards/Cordiali Saluti > > Andr� Broe Jensen > > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Brad Waller > Sent: 18. desember 2003 23:01 > To: 'The Chevelle Mailing List' > Subject: RE: [Chevelle-list] My combo on desktop dyno. > > I had to make a few tweaks, but yes I think you will be right > at 350 HP > and 400 lb-ft torque. I used Dyno2000 and was able to set > the engine to > 355, 10.5:1, Summit-1104 cam, increased lift to 0.496", > selected a dual > plane manifold, 600CFM carburetor, small tube headers with > mufflers, and > I had to sub in the GM 462 head because I don't have a 292 in my > dataset. I would assume that they are close, but I don't know. The > 1.6:1 rockers will also change other cam specs a bit, but I did not > modify duration and overlap by the few degrees you should get. > > Peak HP: 361 @ 5,000 RPM > Peak TQ: 402 @ 4,000 RPM > > Here are the curves: > http://ep.com/brad/ForumPix/andregraph.gif > And the table: > http://ep.com/brad/ForumPix/andretable.gif > > If you have flow numbers for your heads (or can find a flow file), get > them to me and I'll rerun the simulation. I have old style SBC head > flow files for the 441 (76 cc chamber), 462 (62 cc), and 882 (76 cc) > heads. > > Brad Waller ([EMAIL PROTECTED]) > '66 Convertible | 327/dead | 4-speed | Wilwood Brakes | > 245/45/16 BFGs > '67 Chevelle | ex-SS396 | 355/700R4 | '79 F-Body Brakes > > > -----Original Message----- > > From: [EMAIL PROTECTED] > > Subject: RE: [Chevelle-list] My combo on desktop dyno. > > > > Med Vennlig Hilsen/Kind Regards/Cordiali Saluti > > > > Andr� Broe Jensen > > > > Would someone be so kind to run my combo on their desktop dyno > > > > 355 cid > > 10,5 compression > > Summit 282deg cam. > > Intake & Exhaust duration 224deg at 0,50� > > Intake & Exhaust lift 0,496� with 1,6 ratio rockers > > Camel humps 292 Heads 2,02 & 1,60 stainless valves, > > Edelbrock Performer RPM manifold, > > Edelbrock 600cfm Performer carb, manual choke > > Hei Distributor with MSD coil and module. > > > > Will this make 350 hp??? > > > > Thanks ! > > > > Andr� > > > > > >
