HP difference between 280xfi and LE3 cam with LE3 Heads
09-21-2018, 08:59 AM
#1
HP difference between 280xfi and LE3 cam with LE3 Heads I am going to be sending my heads off to Lloyd over the winter to get the LE3 heads, and I am currently running the 280 xfi cam (230/236 .576/.570 113lsa). I am wondering what the difference in what the HP numbers will be with the LE3 cam (236/244) over the 280xfi cam and if i should even bother changing my cam out when i get the heads ported. I have all the supporting mods to help as well. Some hp numbers with the 280 cam and the le3 cam with le3 heads would be nice to know so i can get an idea of what ill be seeing through an A4.
Thanks !
Thanks !
09-21-2018, 01:05 PM
#3
Which engine LT1 or LT4? Displacement 350, 355, 383, 396?
I would imagine depending build quality, tune and supporting parts the difference in hp between the cams would be 3whp to 18whp.
As mentioned LE probably has a good idea of the difference.
LE3 383 whp
With LT1 /LT4 383/396 good set up and tune maybe 430whp to 450whp best case. With marginal LT1/LT4 builds I have seen two make ~375 whp & 393 whp. One had build issues with 3 different types of pistons tossed in of varying compression and the other the tooonneer was 3 dyno pulls, we are done, $500 please!
I'd go smaller cam and add a supercharger later
There used to be several 700+ whp LT1's running around.
Just imagine the butt-hutt a Storm on Steroids could hand out to 5.bros, LSx and new LT's. I bet more than a few C7 Z06 owners would cry
I would imagine depending build quality, tune and supporting parts the difference in hp between the cams would be 3whp to 18whp.
As mentioned LE probably has a good idea of the difference.
LE3 383 whp
With LT1 /LT4 383/396 good set up and tune maybe 430whp to 450whp best case. With marginal LT1/LT4 builds I have seen two make ~375 whp & 393 whp. One had build issues with 3 different types of pistons tossed in of varying compression and the other the tooonneer was 3 dyno pulls, we are done, $500 please!
I'd go smaller cam and add a supercharger later
There used to be several 700+ whp LT1's running around.
Just imagine the butt-hutt a Storm on Steroids could hand out to 5.bros, LSx and new LT's. I bet more than a few C7 Z06 owners would cry
Last edited by 99 Black Bird T/A; 09-21-2018 at 01:22 PM.
09-21-2018, 06:07 PM
#4
Like mentioned.....ask lloyd he will give you a good idea.
the 280xfi is a good cookie cutter cam and makes good power.
However the LE custom cam will be optimised to his le3 heads. More duration, more lift, and a tighter lsa will def out perform the 280 cam. I will guess 15rwhp and better driveability.
Sell the 280xfi for $225 and put it towards LE's custom billet ground cam to match the heads!
the 280xfi is a good cookie cutter cam and makes good power.
However the LE custom cam will be optimised to his le3 heads. More duration, more lift, and a tighter lsa will def out perform the 280 cam. I will guess 15rwhp and better driveability.
Sell the 280xfi for $225 and put it towards LE's custom billet ground cam to match the heads!
09-22-2018, 09:48 AM
#6
Like mentioned.....ask lloyd he will give you a good idea.
the 280xfi is a good cookie cutter cam and makes good power.
However the LE custom cam will be optimised to his le3 heads. More duration, more lift, and a tighter lsa will def out perform the 280 cam. I will guess 15rwhp and better driveability.
Sell the 280xfi for $225 and put it towards LE's custom billet ground cam to match the heads!
the 280xfi is a good cookie cutter cam and makes good power.
However the LE custom cam will be optimised to his le3 heads. More duration, more lift, and a tighter lsa will def out perform the 280 cam. I will guess 15rwhp and better driveability.
Sell the 280xfi for $225 and put it towards LE's custom billet ground cam to match the heads!
OP, not sure of HP difference between the two, need to calculate the valve events to really get a good feel. As to which cam is better, depends on your entire setup and how the car is used, your goals, converter size, gearing, compression ratio, etc. I suggest speaking with Lloyd, he won’t steer you wrong.
Last edited by StealthFormula; 09-22-2018 at 09:54 AM.
09-22-2018, 09:53 AM
#7
The XFI 230/236 cam will have far better drivability than the 236/244 cam not the other way around. The 230/236 cam has +7 degrees of overlap while the 236/244 cam has +20 degrees overlap.
OP, as to which cam is better, depends on your entire setup and how the car is used, your goals. etc. Nobody can provide an accurate assessment without more information. I suggest speaking with Lloyd, he won’t steer you wrong.
