Looks like I will be building version 2.0 of this motor after inspection found a few things that need to be addressed with the motor.
As some of you know, my car is up at Street Lethal and Terry, Shawn, George and the guys have been taking good care of some major upgrades (will post a car build thread later).
The car was converted to an AOD last year and had one testing session before the flexplate and starter teeth had a disagreement. After removing the trans, the flexplate is slightly warped and there are impressions of the flexplate bolts on the front of the converter (billet 10.5" front half). Then one cylinder wouldn't hold compression while checking the valve springs, so the motor was pulled and found to have 2 cracked intake valve springs, a few loose valve guides, and bearing material in the pan from a wiped thrust bearing. Main bearings also need replacement but the cylinders, heads, pistons, rods, etc. all look fine.
So, nothing too terrible and glad it was found early. Might be for the best to allow updating the motor and making it ready for 20psi, 7000rpm traps and 1200hp
This is the plan, feel free to comment or recommend changes.
427" Short block:
W-351 9.5" 4-bolt SVO 2.75" main siamese block (same)
4.125" bore Diamond custom turbo pistons, tool steel pins, hell Fire rings (same)
4.0" Scat billet crank (will change from 28oz. to neutral balance)
6.200" Howard billet rods with ARP 2000 bolts (upgrade 4340 Scat Hs w/ regular ARP bolts)
Stef's custom pan and Melling HV oil pump (same)
ATI aluminum hub balancer and JW flexplate (new)
Induction:
TFS High Ports Ed Curtis/Flowtech Induction CNC 240cc package with 8mm 2.08/1.6 valves and LSx springs/moly retainers(replace 227cc Bennett stage 3 CNC Vic Jrs. with 2.05/1.6 valves)
Edelbrock 2828 Super Victor converted to EFI
4500 Dominator flange 4-hole TB in Vortech carb enclosure box
1.7 ratio Probe shaft rockers (replace 1.6 Comp Pro Magnum rockers)
Ed/FTI custom hydraulic roller turbo cam .624/.579 240/236 116 with 1.6s (same)
Morel link-bar HR lifters (replace FRPP factory style lifters/spider)
Stiff wall pushrods (new)
Turbo:
Same TeamZ kit with Comp cover GT4788 1.08 T6 88mm turbo, 1 3/4" turbo headers, 3" crossover. May change from 1000hp 4" air-air intercooler and 3" cold side pipe to non-intercooled 3.5" coldside and water meth injection. Same fuel system.
Plan:
The motor will be broken-in like last time with a carb on an engine dyno. Last motor made 521hp @ 56-5800 and 518tq @47-4800 with a small vic jr/750cfm no power tuning, just break-in.
Hope to make about 600hp on motor, then modifications of the turbo kit before chassis dyno tuning at Street Lethal. Last made 720rwhp at 19psi on a tight Mustang dyno (was 865/900 with the stick on a Dynojet at 15psi) and went 9.60@148 on 13.5psi with 1.58 60' leaving without boost in 90+ heat about 3250# (went 9.84@149 on 15psi with a stick).
Ultimate goal is to run consistent 8.50-60s @ 160-65mph in True Street events.
Hoping to do that with as little rpm and boost as necesary
Let me know what you think.
-J
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