My build thread.. 63 LS powered C10

[Wasted Income]

Martin takes awhile sometimes. He's SLAMMED with guys making requests for custom cams. He responded to my request with a 3 paragraph response about what cam he chose and why....and I'm just some nobody on the internet. My brother had the same experience with Martin, but it just took a bit longer for a response.

LilJohn on the other hand, never responded at all.

[Super73]

I have talked to Martin, Pat, and a few others. Most of them seem to forget that I have a large stall and could not care about power under the curve. I have yet to see any of their cams carry a 400+ CI motor well in to the 7k RPM band which is what I am doing (7,500-7,600). A motor needs overlap to do that, yet they seem stuck on 25-30* of overlap max.

Here is a great example of a cam I think Pat and Martin would not design, yet look at the power it makes and RPM it carries with 430ci. Cam is a 257/272 .630/.600 lift, 109lsa 105icl. I have yet to see Pat or Martin put something on a 105icl let alone a 109lsa.

http://ls1tech.com/forums/dynamomete...o-results.html


Now, I am not bagging on them, but neither of them seem to do max effort deals. Either that or they don't share them.

[Wasted Income]

Fair enough. That 430 inch LS3 is definitely getting it done.
However, I think that Martin and LilJohn cater more to the turbo crowd, than the NA crowd.

Martin spec'd the cam in this car. Very, very simple 370/S480 combo with 3.08 gears.

It's not "max effort" but it's cooking on a street driven, bulletproof combo.

http://ls1tech.com/forums/forced-ind...-build-52.html



http://www.youtube.com/watch?feature...&v=KtFAGr8dVxI

[Super73]

I need to get some pics up, but I am putting together the 9" now.

Yukon through bolt center
Yukon locker (since it is still street driven)
3.90 gears
35 spline axles
Still a 5x5 pattern
Wilwood 4 piston caliper drag disks

Hopefully have it together before the end of April. May tends to have good racing weather at Sac.

[GMR-PERFORMANCE]

Only 3.90 gear ?? tire height??

[Super73]

With the 4.56 and 30" radial, I went through the traps on the 100hit at 7,250rpm and 132mph. On this run:
I picked up 8.5mph to the 1/8 and only 5mph at the 1/4.
8* timing pulled which is pretty conservative for a 100 hit
Average AFR was rich at .76 lambda which IMO is rich for E85. I like .80 It was a bit richer on the top end due to INJ Duty going up as MAP went up.

I only feel comfy running it to 7,600 out the back door and have a lot of N20 to add to it. Sooo.. I think it needed a much taller gear

[GMR-PERFORMANCE]

well you are running 11. up to 11.4 at .800 I would shoot for .875 myself .. You are running a bias on map to DC?? or did you target a rich AFR at higher KPA? I would think that once you drop the hammer the KPA should be in the 100 % or at least 95%+ for the entire pull. But then I am not looking at your AFR table either .. with the taller gear the load should hit the wall right out the gate

[Super73]

Steve.. this is e85 not gas, hence the richer lambda. I will get it to .80 and then try .81 and .82..

On motor it sees about 97 kpa on bottle it goes to 100-101 kpa. I just need to lean out the higher kpa some.