#1
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427 rebuild
A few months ago I bought a rebuilt gen IV 427 on EBay for my 69 Camaro and had nothing but problems with it. Low oil pressure (5-10 psi) and high temperatures (210-220 degrees F).
I brought it to Precision Automotive in Simsbury, CT to be checked and was told: Bores 4.313 - 4.3135 Pistons 4.307 = 0.0065 CL Ring Gap 0.027 to 0.028 Crank Mains 2.7385 0.10 under Main Housing Bore +0.005 0.006 CL Bearing Rods 2.1895 0.010 0.0015 CL Cam is Comp Cams 294S (# 11-219-4) 0.022 Lash 595 248 110 degrees 595 248 (not same as book) Spring 1.88/1280 1.45/380 he also said: - it was originally a 2 bolt converted to a 4 bolt - the mains are way over (6 thou clearance) - the rods are a little tight - the bearings are history - he will hone and ring it so they rebuilt it and put it on the dyno today. Dyno setup: Running: went to 505 hp
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68 Camaro (?350 SB) 69 Camaro (L72 427 BB) 69 Camaro (DZ 302 SB - www.z28.net) Camaro - A friendly flying car – from the French - the first half "camarade/friend" and the last half “aero/of the air". |
#2
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Nice!
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Ron 85 Monte SS, 2004 Corvette LS6 w/02 T56, 9" rearend, 390/364 rwhp/tq ,Slowhawk tuned, 3575 lbs 11.74@114.6mph BACK IN THE GAME!! DD 06 Cobalt SS/sc, stock w/k+n only 14.78@97mph http://www.cardomain.com/ride/2151623 http://www.racecarsbyhalls.com http://www.slowhawkperformance.com Another show Lady- Why does your car say Corvette on the engine? We have a Corvette and your car doesn't look like one. LMFAO |
#3
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Kick Ass!!!!! now what about the torque??? i dont care about HP!!!!
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1998 Firebird:buncha parts thats used to make it go fast..... not so much anymore. BAAAAAA!!!!!! |
#4
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Quote:
Dyno sheet:
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68 Camaro (?350 SB) 69 Camaro (L72 427 BB) 69 Camaro (DZ 302 SB - www.z28.net) Camaro - A friendly flying car – from the French - the first half "camarade/friend" and the last half “aero/of the air". |
#5
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nice!
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#6
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repectable numbers.
more than ya need David.
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"As I lay rubber down the street, I pray for traction I can keep, but if I spin and begin to slide, please dear God protect my ride." -Amen US NAVY RETIRED |
#7
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95 Z28 hard top - LT1 | 4L60e | bolt ons | Yank SS3600 | suspension | viking coil overs | 3.42 10 bolt | 3520 lbs - 12.331 @ 108.22mph 1.668 60' 08 Saab 9-7x - L96 6.0 swap | L92 heads/intake/TB | LS6 cam | LS9 springs | 7.425" hardened pushrods | CAI | 1-3/4" stepped LT's | catback | 4L60E | FTI 3000 278mm converter |
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