flat tappet vs roller

et7333 · 09-10-2009, 04:18 PM

What do you guys think if I switch my current combo:
383,13-1,.558 int,.550 ex,260,266@.050 comp flat tappet,stock 215 Dart Iron Eagle Platinums,Manley 6 inch rods,Super Victor port matched,750 APD Alky carb, in my 3100 lb 68 camaro,to a COMP ROLLER#12-906-9,.276,.284@.050,.630,.630@107?How much H.P. do you think this roller will gain,if any?

09-24-2009, 10:01 AM

Unless this car weighs < 2000 lbs and you have a 5800 stall converter. This cam is probably a bit too big for a perfect fit. Generally a roller cam is 40+ hp more than flat tappet.

Bimbo Jones · 09-24-2009, 12:12 PM

et7333, I made amost the same switch this season in my 3400lb wagon. I picked up an honest tenth, maybe a little more. But the real gain for me was how much more the car was driver friendly in the pits, starting up and setting a nice smooth idle. I wish I would have put a roller in it years earlier.

09-24-2009, 10:01 AM	#2
Chris Hardy Guest Posts: n/a	Re: flat tappet vs roller Unless this car weighs < 2000 lbs and you have a 5800 stall converter. This cam is probably a bit too big for a perfect fit. Generally a roller cam is 40+ hp more than flat tappet.

09-24-2009, 12:12 PM	#3
Bimbo Jones Member Join Date: Nov 2008 Posts: 109 Likes: 0 Liked 0 Times in 0 Posts	Re: flat tappet vs roller et7333, I made amost the same switch this season in my 3400lb wagon. I picked up an honest tenth, maybe a little more. But the real gain for me was how much more the car was driver friendly in the pits, starting up and setting a nice smooth idle. I wish I would have put a roller in it years earlier.

09-10-2009, 04:18 PM	#1
et7333 Member Join Date: Sep 2007 Posts: 155 Likes: 0 Liked 1 Time in 1 Post	flat tappet vs roller What do you guys think if I switch my current combo: 383,13-1,.558 int,.550 ex,260,266@.050 comp flat tappet,stock 215 Dart Iron Eagle Platinums,Manley 6 inch rods,Super Victor port matched,750 APD Alky carb, in my 3100 lb 68 camaro,to a COMP ROLLER#12-906-9,.276,.284@.050,.630,.630@107?How much H.P. do you think this roller will gain,if any?