No dyno numbers yet but soon! 440 C5z
02-21-2008, 01:59 AM
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No dyno numbers yet but soon! 440 C5z Well we finally fired up the yellow car today and got a quick break in going.
This round of mods for my 01z included
pull the 383 (sold to a customer)
replace with
Darton sleeved ls6
4.185 bore
Callies 4.000 stroke
Callies rods
Weisco flat top pistons
ADR10 cam (high 250s low 260s 112 lsa)
TFS 235s
12:1 Compression
Kooks 1 7/8 headers
Modified TI exhaust
Fast 90/ ls2 tb
Callaway CAI
LPE 100mm maf
Tex ExoSkel clutch
C6z shifter
Sparco fighter seats, sparco 6pt harnesses
MSI roll bar
GFI stage 5 MN6 transmission
Hotchkis sway bars
quick video of my personal break in procedure do not follow...
This round of mods for my 01z included
pull the 383 (sold to a customer)
replace with
Darton sleeved ls6
4.185 bore
Callies 4.000 stroke
Callies rods
Weisco flat top pistons
ADR10 cam (high 250s low 260s 112 lsa)
TFS 235s
12:1 Compression
Kooks 1 7/8 headers
Modified TI exhaust
Fast 90/ ls2 tb
Callaway CAI
LPE 100mm maf
Tex ExoSkel clutch
C6z shifter
Sparco fighter seats, sparco 6pt harnesses
MSI roll bar
GFI stage 5 MN6 transmission
Hotchkis sway bars
quick video of my personal break in procedure do not follow...
Last edited by rmitchell242; 02-21-2008 at 02:06 AM.
02-21-2008, 04:30 AM
#3
02-21-2008, 10:04 AM
#4
What are the cam specs and compression ratio you were running in your 383? I am almost there on the power in mine but my tq is lacking seriously. Your new combo is going to be a monster. Good luck.
02-21-2008, 07:22 PM
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What kind of tq are you making now? Are you running 4.10s? I have seen 4.10 rob 15rwtq on the dyno!
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02-22-2008, 07:34 AM
#8
I am making 490rwhp and 445rwtq. I have a point more compression and a 6* on both lobes bigger cam than your old combo. I am going to up my compression some more and put my smaller cam back in and see what happens. Those are amazing numbers for your combo. It must have all been in the heads. I have LG LT's, TSP 2.5 LS6's, ported 90/90 and every bolt on save for an EWP. I haven't re-dynoed after the YT RR's though. I think my valve tain geometry was a little off with the stock rockers. I expect to be over 500/450rw next time on this current combo. I am still running the stock 3.42's but I did put on some heavier wheels. I really don't think the wheels are costing me much. The car has run 10.8's@130 so it is still making good power. I just want more tq since this is my daily driver. Thanks for the info.
Brett
Brett
02-23-2008, 04:43 PM
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I plan to keep 100 octane in it. I am installing a new fuel pump monday or so and I will get the numbers up!
02-23-2008, 04:44 PM
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I am making 490rwhp and 445rwtq. I have a point more compression and a 6* on both lobes bigger cam than your old combo. I am going to up my compression some more and put my smaller cam back in and see what happens. Those are amazing numbers for your combo. It must have all been in the heads. I have LG LT's, TSP 2.5 LS6's, ported 90/90 and every bolt on save for an EWP. I haven't re-dynoed after the YT RR's though. I think my valve tain geometry was a little off with the stock rockers. I expect to be over 500/450rw next time on this current combo. I am still running the stock 3.42's but I did put on some heavier wheels. I really don't think the wheels are costing me much. The car has run 10.8's@130 so it is still making good power. I just want more tq since this is my daily driver. Thanks for the info.
Brett
Brett
02-23-2008, 07:22 PM
#16
Thanks for the info. I am very interested in your prior project. Your new one is a complete monster as well. I love the way it sounds. It also revs up extreamly fast. When you switched to your heads how much tq did you pick up? Who does your tuning?
Brett
Brett
02-23-2008, 08:00 PM
#17
Pray,
I would guess that the head runner cc in conjunction with your SCR/DCR is what is holding you back.
My friend Rob is experiencing the same thing:
MTI 402 11:1
244/112 cam
MTI ported LS6's with nearly 240cc runner volume
C5Z through 3.90's
stock Z wheels
475whp/445wtq
My car:
TSP 402 11.6:1
240/244/111 cam
ETP 215's
C5Z through 3.90's
18" HRE's
510whp/497wtq
His car has gone 99 1/8th, 129 1/4
My car has gone 102 1/8th, and 132 1/4
Both runs were at +2,500 DA
I have been a big believer of the smaller runner heads and a strong scr/dcr as my first set of non-stock heads on my 346 were the TSP 2.5 243's, which made the car seem sluggish. I went to the ETP's with more compression and the car woke up! On my 402 these small runner's will eat tires with the 413wtq it makes at 2,800rpm...
Good luck, Just tryin to share some info!
I would guess that the head runner cc in conjunction with your SCR/DCR is what is holding you back.
My friend Rob is experiencing the same thing:
MTI 402 11:1
244/112 cam
MTI ported LS6's with nearly 240cc runner volume
C5Z through 3.90's
stock Z wheels
475whp/445wtq
My car:
TSP 402 11.6:1
240/244/111 cam
ETP 215's
C5Z through 3.90's
18" HRE's
510whp/497wtq
His car has gone 99 1/8th, 129 1/4
My car has gone 102 1/8th, and 132 1/4
Both runs were at +2,500 DA
I have been a big believer of the smaller runner heads and a strong scr/dcr as my first set of non-stock heads on my 346 were the TSP 2.5 243's, which made the car seem sluggish. I went to the ETP's with more compression and the car woke up! On my 402 these small runner's will eat tires with the 413wtq it makes at 2,800rpm...
Good luck, Just tryin to share some info!
02-24-2008, 11:54 AM
#18
Thanks for the info. I am running 11.8 SCR with 8.5 DCR. So the compression is there but the DCR is lacking. The car has gone 102+ 1/8 and 130 1/4 at +500 DA. I am running a 244/248 .612/.615 114+4 cam right now. I am going to go back to my Pat G 239/244 .651/.612 112+2 cam and a .030 Cometic for a SCR of 12.1 and DCR of 8.9. I am going to start my own thread so I don't pirate this one any more. So please chime in on my new thread. Sorry to the OP for hijacking. That was not my original intent.
