Comp 127400

[aleborjas]

hi what you all think about this cams on a stock short block just stage 2 heads and springs and phasers, long tubes, 4.30 gears, jlt intake, manual, and regular bolt on's, just whant power and torque dont whant race car sound... so dont tell me hot rods or thumpers...

 

[JeremyH]

you might wanna look at a bigger cam to go with those stage 2 heads (127600)

 

[weeloGT]

127600 would be better however he said he didnt want that race car sound, so the thumpers wont be as bad, however i agree with lightblade, you wont be getting full use out of your heads

 

[US-1]

hi what you all think about this cams on a stock short block just stage 2 heads and springs and phasers, long tubes, 4.30 gears, jlt intake, manual, and regular bolt on's, just whant power and torque dont whant race car sound... so dont tell me hot rods or thumpers...

About time someone figured these cams out. Best kept secret in the line for N/A cars.

127600 would be better however he said he didnt want that race car sound, so the thumpers wont be as bad, however i agree with lightblade, you wont be getting full use out of your heads

You'd be surprised.

 

[aleborjas]

i dont like to go too big on cam because of torque the is complete stock weight even 2 JL amps and 2 ARC audio 12" subs... and for the track i will use 26" slicks

 

[AlbertD]

hi what you all think about this cams on a stock short block just stage 2 heads and springs and phasers, long tubes, 4.30 gears, jlt intake, manual, and regular bolt on's, just whant power and torque dont whant race car sound... so dont tell me hot rods or thumpers...

I think you will be satisfied with those cams, idle won't be as drastic as the 127500's or 127600's and you will still get some really decent power out of them. I have the 127500's in right now with P&P heads and the idle isn't that bad at all, so I would imagine the 127400's being alot tamer. Would probably be a good sleeper cam

 

[US-1]

Check the duration numbers vs. the lift figures. Lots of lift, lower duration and a relatively tight lobe sep number (112). Excellent cylinder filling so you end up with much higher cylinder pressures than you would with the 127500 or 127600 cams. This will yield much more torque.

 

[aleborjas]

Check the duration numbers vs. the lift figures. Lots of lift, lower duration and a relatively tight lobe sep number (112). Excellent cylinder filling so you end up with much higher cylinder pressures than you would with the 127500 or 127600 cams. This will yield much more torque.

that's what i want for drag racing you need torque to move a heavy car out of the hole... should be a torquie cam

 

[aleborjas]

i already bought the cams but now dont know wich springs i need between 26113-24 and 26125-24 and can i use stock retainers?

 

[US-1]

26113-24

 

[Rasmus]

26113-24

I looked up the difference in the two springs, and the 125's have a higher spring rate and seat load than the 113's. What kind of impact would that have on a motor running 127400's or 127300's? A bit harder on the heads?

 

[ShadowLands]

Not really needed unless you're running 10 passes every single time the track is open and/or you are running an entire points season in something like NMRA. For an average street/strip car the 26113-24 springs are fine.

 

[RED09GT]

The mentality that more head flow requires more duration is a tough one to break.
For a streetable combo, a more efficient head requires less cam duration to fill the chamber than a stock heads does.

 

[ShadowLands]

With this type of profile it isn't really a matter of "more cylinder head flow." What these cams achieve with their profile is cylinder charging. By opening the valve over .500" but not holding it open very long allows you to move the valve opening points around to a point where you get increased cylinder pressure. More cylinder pressure, more power potential. The specs on these cams also show that low speed torque production and off-idle/part throttle response will be excellent.

 

[RED09GT]

With this type of profile it isn't really a matter of "more cylinder head flow." What these cams achieve with their profile is cylinder charging. By opening the valve over .500" but not holding it open very long allows you to move the valve opening points around to a point where you get increased cylinder pressure. More cylinder pressure, more power potential. The specs on these cams also show that low speed torque production and off-idle/part throttle response will be excellent.

Either way, having ported heads does not require to go near the bottom of the page to find the right cam, that's the point that is missed on these boards.

 

[ShadowLands]

Very true. Picking the numbers on camshafts is something that 98% of enthusiasts just don't get.