Cordes Performance Racing

Pete brought us his Z with a setup already installed, it broke a lifter that we determined was caused by the pushrod length being extremely far off.

His setup was as follows when it came.
TSP short block 427 still with flat top pistons with -3cc reliefs.
TSP ported stock heads milled 50
Huge cam 255/263 .660/.660 110 lsa with stock rockers, all the guides were destroyed in 4k miles from that much lift on stock rocers
kooks 1 7/8
fast 102/102
halltech intake (maf forward)
13:5:1 compression
e85
614/542
run conditions were 75 degrees


New setup.
guides replaced in the heads and fixed.
cpr alpha cam lift is way less so guides won't get beat up and cam is smaller overall
arh 2'' longtubes
msd manifold (out of the box)
624/548
run conditions were 119
oh and proper pushrod length!

He now has a setup that not only makes more power in worse conditions, but drives much smoother, won't grenade the guides, and has a much flatter power band. If we could change everything we would swap out the heads for a set of wcch and port the msd but i think this thing is doing pretty well

MTPZ06

Great results Joe, and I really hope people are paying attention this bit of info right here...

Cordes Performance Racing

me too, I know there is a company that post all over fb that is trying to convince people their huge lift cams will be fine but that isn't the reality we live in...

nuke61

Ahhhhh... patience... I still have a few weeks before I drop off my car.



Another excellent result with the Alpha cam. I'm drooling.

AzDave47

Good work, Joe.

Pete, glad to see the work came out well for you. Do you expect to do any NFZ 1/2 mile events this fall?

Dave

Cordes Performance Racing

he better!!!

lamboworld

What injectors is your customer using in his setup?

jayyyw

This is what I wanted to see. Great stuff..

You said pushrod length was off and was the cause of the broken rocker. Would that not also contribute to the premature wear on the valve guides? I know the lift is a little extreme, but I haven't heard of anyone wearing the guides in just 4k miles with the valvetrain in spec.

Cordes Performance Racing

He broke a lifter.

With that much lift on stock rockers it does a lot of funky stuff to the valve in how it rides it and will wear out the guides.

Cordes Performance Racing

Sadly fast 85lb. It would idle a little crisper and be a touch smoother with a good set of Id or fic

phxcobra

Hey I know that car :-). Just to clarify, the heads are actually WCCH heads not TSP. And I think there's actually like only 2k miles on the prior build. I'm definitely glad we caught this (failed lifter, trashed guides) before it took out the whole motor. I think anyone with really aggressive cams should inspect their heads and valvetrain very frequently. Again, I had very few miles on that prior setup. Glad Joe steered me toward a more practical cam/setup.

Joe, was that dyno session done with the e85 (more accurately e54) that I already had in the tank?
Thanks,
Pete

Cordes Performance Racing

Sorry I was wrong on the heads, I just saw the old invoice in the car that had prc heads listed. This was on e85

phxcobra

Hmm,
it listed PRC heads on the TSP invoice (in the manilla folder I left in the car)? ****, maybe I'm wrong then. I do know that the prior shop did send them to WCCH for the milling,etc. I thought TSP just did a valve job with all that original work back in the day. In any case, looks like the car is make good power. Should be fun on the track.

RamAir972003

I'm jealous I will never get 600 on pump gas I quit time to build a race car....

AzDave47

CPR got me 600+ on 91 octane pump gas, cam, heads and MSD.

phxcobra

Picked the car up from Joe and the crew (at CPR) today. Holy ****! The new setup is amazing. The last cam i had in there bucked and surged like a Bronco. It sounded cool at idle, but driving around in town or especially around parking lots really became a chore. This new Alpha cam setup is like day and night. Almost no surging at all, very easy to drive. 6th gear on the freeway at 1500 rpm is smooooth. At stop lights, the only word I can think of is "angry" to describe the sound and idle. It feels like its ready to tear somebody a new one. I love it! So glad Joe steered me to this setup. I think people looking at really high-lift aggressive cams should learn from my ordeal. The beating the valve train takes along with the poor drivability isn't worth it.

Joe, thanks for doing such a great job. To be honest, it's fun to drive the car again. The old cam, if I wasn't at the track above 3k rpm, wasn't fun to drive. Now its time to get it prepped for the track. I'll also look to try and bring it to the Omega event to see what she'll do in the half mile.

I'd highly recommend CPR for anyone needed a good shop.
Cheers,
Pete

Unreal

I've driven an Alpha car. They are amazing. Drive great, make great power.

nuke61

Congrats on your awesome outcome. I had no doubts, after reading *so much* good stuff about Joe and CPR, but it's always great to hear about another happy customer. I'm really looking forward to my Alpha install

phxcobra

I think you'll love it to. You staying pump gas or going flex fuel?

nuke61

Strictly pump gas.