236/236 .651/.651 110lsa on stock bottom end and heads
05-04-2008, 10:50 PM
#24
TECH Senior Member
Clearing so that the motor turns is not the definition for fitting.
A cam that fits is a cam that has safe PTV margins, no less than .070 intake and .090 exhaust on the street. Ideal should be above .080/.100
A cam that fits is a cam that has safe PTV margins, no less than .070 intake and .090 exhaust on the street. Ideal should be above .080/.100
05-05-2008, 04:39 PM
#28
I run a 250/266-651/651-112 and had to have my custom pistons cut with 4cc valve releafs, but my duration is alot higher than yours but I beleave youll find out as soon as you rev the motor to high rpm under load , Watch your timing adv. !!!!!!!!!!! If you brake a valve youll junk the motor.
05-05-2008, 04:43 PM
#29
http://www.dropshots.com/shawnmacananny
There's a vide of it running. I dont see why it wouldnt clear though, it's high lift but that doesnt take place until BDC, 236 on the intake isnt really big, 110lsa isnt that tight as the trex runs this with a bigger duration, and i have stock valves and all. I'll definately be flycutting when i swap the heads. The lobes are also LSK lobes.
There's a vide of it running. I dont see why it wouldnt clear though, it's high lift but that doesnt take place until BDC, 236 on the intake isnt really big, 110lsa isnt that tight as the trex runs this with a bigger duration, and i have stock valves and all. I'll definately be flycutting when i swap the heads. The lobes are also LSK lobes.
05-05-2008, 11:56 PM
#31
TECH Senior Member
Shawn,
You seem reluctant to take any advice, your reasoning is not sound, tech wise.
T-Rex is not a street cam and actualy was designed to just put the biggest cam in a stock block, it is on a 110+0 and read TR website, THEY advise to chech PTV.
Like I mentionned your concept of clearing is just that, YES it clears, is it safe? NO it is way below safe margins. How much unsafe? Who knows? why because you know better and you don't want to measure.
Could you trash your motor? YES, when? who knows, but when it happens, you'll pay the price.
You seem reluctant to take any advice, your reasoning is not sound, tech wise.
T-Rex is not a street cam and actualy was designed to just put the biggest cam in a stock block, it is on a 110+0 and read TR website, THEY advise to chech PTV.
Like I mentionned your concept of clearing is just that, YES it clears, is it safe? NO it is way below safe margins. How much unsafe? Who knows? why because you know better and you don't want to measure.
Could you trash your motor? YES, when? who knows, but when it happens, you'll pay the price.
