Cam selection.
Thread Starter
Launching!
Joined: Apr 2015
Posts: 200
Likes: 2
Cam selection. Hello all,
I have a LT1 383 built by Karl Ellwein. It is awesome! It had Dart Pro 1, 23° 11121112L4 heads, GM 846 cam, 1.6RR, Mahle Power Pak pistons with 11.7 compression, stock LT1 intake. On a crank Dyno with Carb it made 500hp/530 tq.
Now I will have a 383 LT1 with AFR 195CC Competition heads flowing 308@.600, with a 58cc, and Mahle Power Pak pistons at 11.7 compression. The bottom end is built, but I don't want to shift past 6500. I am trying to get the best cam for power between 2000/2600 and 6000/6400rpm. I want to try to get upper 500s all motor if possible. I need a HR cam , and have 1.6RR. This is an M6 with stock 10bolt rear. I have H beam callies Rods and Callie's crank. I will port intake too. I have a 58 throttle body.
I am thinking about a LE 231/239 110LSA
I just read about the comp cam xfi 292...looks powerful, but it may be to much duration.
Any ideas? Thank you!!
I have a LT1 383 built by Karl Ellwein. It is awesome! It had Dart Pro 1, 23° 11121112L4 heads, GM 846 cam, 1.6RR, Mahle Power Pak pistons with 11.7 compression, stock LT1 intake. On a crank Dyno with Carb it made 500hp/530 tq.
Now I will have a 383 LT1 with AFR 195CC Competition heads flowing 308@.600, with a 58cc, and Mahle Power Pak pistons at 11.7 compression. The bottom end is built, but I don't want to shift past 6500. I am trying to get the best cam for power between 2000/2600 and 6000/6400rpm. I want to try to get upper 500s all motor if possible. I need a HR cam , and have 1.6RR. This is an M6 with stock 10bolt rear. I have H beam callies Rods and Callie's crank. I will port intake too. I have a 58 throttle body.
I am thinking about a LE 231/239 110LSA
I just read about the comp cam xfi 292...looks powerful, but it may be to much duration.
Any ideas? Thank you!!
Teching In
Joined: Apr 2017
Posts: 24
Likes: 0
From: Flushing, Michigan
The 231/239 would be a perfect fit, Comp lists the 292 powerband as 2200-6200 rpm, in reality its a ~3000-7000+ rpm powerband. If your intentions are to drive it on the street on a regular basis stick with the LE cam.
Thread Starter
Launching!
Joined: Apr 2015
Posts: 200
Likes: 2
The XFI 292 would make it easier to achieve your power goals but I think it's too much cam for what you're looking for. I could see that LE cam working out well for you. Is it a cam that Lloyd spec'd for you? If not, I'd give him a call and see what he thinks.
Thread Starter
Launching!
Joined: Apr 2015
Posts: 200
Likes: 2
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TECH Veteran
Joined: Apr 2008
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OP
My $.02 would be go with a LE cam, especially if you want to keep max power under 6500 RPM.
The XFI you note makes good power but wants to spin close to or at 7k RPM to make peek power.
In drag racing you want to shift 300-500 RPM past max power so you land closer to the cams max power band on the next shift.....so a cam that makes power up to about 7k, IMHO, is a bit much
My $.02 would be go with a LE cam, especially if you want to keep max power under 6500 RPM.
The XFI you note makes good power but wants to spin close to or at 7k RPM to make peek power.
In drag racing you want to shift 300-500 RPM past max power so you land closer to the cams max power band on the next shift.....so a cam that makes power up to about 7k, IMHO, is a bit much
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