New intake =new idle
#1
New intake =new idle
Replaced perf rpm with 300-110 holley. Basically a taller bigger port strip Dom. It really likes it. Anyway it idles 300 rpm lower and with no loss of bottom I picked up huge in mid/top.
Different angle to show the perfect balance of motor. Even with a rough idle it sits perfectly still. Has a lighter bob weight than a 350 but 396ci.
Different angle to show the perfect balance of motor. Even with a rough idle it sits perfectly still. Has a lighter bob weight than a 350 but 396ci.
#3
It's a custom grind from a comp billet. 232@.050 .630. Mechanical roller. There is no adv dur. 106 centerline. wasnt told Ls angle or int/exh open/close. The heads are what makes this motor though well the head/cam match I guess. That cam really isn't that big but it has an .035 bigger int valve. It runs best shifted at 7200.
Last edited by Flextrainer; 03-18-2014 at 08:48 PM.
#4
The cam isn't really that big? It may not have a ton of duration, but well over .600" lift is a big cam for any SBC! That's bigger than a lot of BBC cams, and almost every SBC cam I've ever owned.
#5
Yea you're right. It's the biggest I've had. I guess what I meant is that the heads compliment it well bc they can use it. Now on a stock 185cc 2.02 valve head it would be tremendously huge. Waay too big. We used a bigger valve and more lift (as well as port matching,cc work, valve job) to keep duration down as duration affects idle quality and vacuum more. I was told the .035 bigger valve was worth 15-20*duration. So realistically I've heard smaller cams with lower vacuum and higher idle (cant idle at 950) with more chop, with smaller heads. Wasn't trying to misrepresent.
#7
Lol my bad left that off. Yea I'd say 110-112 probably. He didn't want me to duplicate so he didn't give me everything and that was one of specs I didn't get. I meant dur vs lift, but Ls has more effect than both. It seems to have a fairly wide powerband and starts fairly low believe it or not. I'm running a 2200 stall with no problems except idle drop in gear. I trusted him to build it and glad I did it's seen close to 10k street miles and over 70 passes. Yea I think he did good too he has a nice cnc Mach and grinds all his. He said it would sound good run better...I told him to make it silent, but I didn't get everything I wanted...lol took him 3 months too I wanted sooner.
#9
Thank you! I put one up just now last year's fun in this section. A bunch of races, of course ones I won...I lost a bunch too...
#10
My hood has a hole just like the one on your hood. I used a 4" cowl and I needed every inch. When the weather gets better I will mount the scoop from underneath. Right now it is riveted to the top to get it out for testing. I am an old guy so I still have trouble getting pictures up let alone video. Once again thanks for sharing your project.