mjr46

^^^^^^so who's car was that?????

w8less

jays. project red death or something like that

RED DEATH

Joel5.0

Yep.....

w8less

joel can you shed some light on this one....?

OnyxCobra

That car is running a 4.56 gear too though which is helping its ET A LOT, most of us don't go that crazy with gears and wouldnt see such a deep ET.

Joel5.0

Anytime I see a remark like "xx cam with x.x ratio rockers making a lift of .585" (to pick a number) is a waste b/c GT40/GT40p/ported E7 heads are done flowing @.500" lift, so why pick a cam with a lift over .500" "...... I simply chuckle. Most flow number tables are results @28" H20, etc, etc........ does the engine only work @28" pressure differential?....... nope.... so why take those flow numbers as gospel? Another little detail is..... when in the piston cycle do you want to have the best flow?...... would increasing total lift be a benefit in the 85°-106° ATDC range?........ or increasing it in the 75°-113° ATDC work better for cylinder filling?...... in other words, you could have a gross .585" lift at the valve, but you had the valve open between .480" - .510" lift during the time the engine needed it most to cram that cylinder with more A/F. Isn't that what we want to have the engine do to generate more power?....... this is the reason why total valve lift is not, should not be a goal/limitation...... it's rather a result of the required events to do some real

w8less

i understand that but was under the impression that the head itself would hold it back. basically it would lose power as it was revving that high. i saw that in the link for red death that there was a "simple valve job" did that help with the extra rpm? if thats the case could i take my simple gt40p's bolt them on have jay do me a cam with the right springs and valve train. put it together then rev the **** out of mine as well?

does RPM equal more power as well?

MadMan@TheWheel

For one, I am not too sure why you would assemble a killer cam/valvetrain combo, and do it on the GT-40P head. I mean they have their application, just not here. More RPM's do not equate to more power if you choke the motor down.

I cannot see those heads being the best option for that combo. Just me thinking out loud. I would think with that combo at 8,000 the engine would go totally flat, in fact at about 7,000 it should start to die.

That's just me though.

lxman1

I would have gotten the CompCams myself.

FLcracker9

Well, my new custom cam has been ordered and paid for. The only advice I have for going custom is, it cost money to do it right!. Jay at CI was able to convince me that without the matching springs, the cam won't perform to it'sfull potential. I was under the impression that since my TW heads were new, that the springs would be sufficient (TF says they're good to 540 lift?). Jayconvinced me that in order to be competetive,most head manufactures skimp on things like the valve springs, retainer & locks. He advised me that the factory springs on my TwistedWedge heads were not up to the task for the cam he was building, so another $179 formatching springs, and $40 for new spring cups, andmy valve train will be up to the task. I'll keep you posted on the specs once I get them. It sure would be more justifiable if I was building a new 347 instead of the stock block 302?. Looks like when it blows, I'll be building a 306 so I can use these same parts.