avg: cfm intake 200
avg exhaust 145.5

lift int exh

.0500 36.5 27.0
.1000 67.4 50.6
.1500 104 78.7
.2000 138.6 166.2 ??? this must be a type O
.2500 167.4 128.0
.3000 194.4 144.5
.3500 224.3 156.5
.4000 245.0 167.3
.4500 259.7 174.1
.5000 268.6 180.7
.5500 273.7 186.3
.6000 276.4 190.2
.6500 277.4 192.5
.7000 274.2 194.4



i have to say there pretty good. i like the mid lift numbers

any other opinions.

 

89/86 percent of max flow at .400"...

Nice.

 

Nice. Got a cam figured out yet?

 

yes i do have a cam picked out. ots a joe O custom for a 388. cola crank lunati promod rods and je pistion. and we are going to shift a 6800 in a six speed. ought to be fun

 

Sounds like it. Why the 388 instead of a 383 or 396? Just curious.

 

well the 388 is five exta cubes and the only difference is the 3.8 stroake vs the 3.75 stroke. and the longer stroke will create a little more torqe. the parts are alot more for a 396 as well. acctually this engine is built with over kill parts as far as my needs go. but i would rather buy higher quality parts, instead of trying to get by with the bare minium i would need. and who knows i may change my mind and spray 200 shot, and with the parts im using i wouldnt be scared at all. but honsetly im a NA person at heart. but i have been known to change my mind.

 

6800 in a 388? Making power to 6800rpm or just shifting there (beyond peak hp)?

Must be a stout cam.

-Mindgame

 

i want to make power to about 6700 6800 and shift at 6900 or 7000. but loyd told me joe could make a cam that could do. and i will have to bottom end to do it on so.

 

my intake #'s are similiar to those but my exhaust is a little higher...what's the relevance of that?

 

what are your flow #s. just curious.

loyd said mine are about 5 cfm higher than usual acrros the board. but it really counts from .200 to .400. the better the mid lift #s the better the heads.

edit

i forgot to say that i used 2.05 valve with new seats.and thats why the mid lift #s are so good

 

Sounds good, but let me say this... if you're going to shift at 7k anyway, why not just use a cam that will peak at that rpm?

If you make peak at 6600-6700 then you're giving up power. Spin it 300-400rpm higher and you may see 15-20 more hp. So you shift AT peak hp, but you're still carrying more torque and hp at the shift point.

-Mindgame

 

when this motor is done i wont mind spinning it to 7000 at all. but we will see what joe does with the cam. what im going to do is let him know what i want and let him do the rest. and if it peaks at 6700 thats fine. ill let him do his thing since he knows what hes doing. but i will be sure to tell i would like to dhift a 7000,

but i thought you suppose to shift about 300 to 400 passed peak and the stock pcm is only good to 7000.

 

I shift where my motor tells me too (according to ET/mph). Tell your goals to Lloyd/Joe and let them advise you. That's why ya pay them the big bucks .

Ryan

 

Right. Best shift points require a little numbers crunching and a good deal of track time.

-Mindgame