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#1
09-19-2006, 10:48 PM
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455 is alive!!!
Dudes,
I just fired up my new 455 in my 71 Lemans convert! Awesome sound! oil pressure 55psi and holding Temp crept up to 205 after about 15 mins at 2500 rpms. I shut 'er down and I'll run it some more tomorrow. My engine, .030 over has the #15 heads, stock HEI with the RAIII cam and RA exhaust out to a set of Flowbies. I will be putting in the full PYPES Xpipe setup on this week. My question is how long and what RPM for proper cam breakin? I gleaned a ton of info regarding the exhaust and HEI setup off this board, many thanks to all contributors, it's like the PONTIAC library of congress with the loads of good info/pics regarding PONCHOS. ITO |
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#2
09-19-2006, 10:54 PM
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congrats man!
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#3
09-20-2006, 12:51 AM
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Congrats, got to love a newborn 455!! For cam break-in I run 2000 rpm's for 20 min. so I think your about done. Take it for a spin and enjoy!! I usually do an oil and filter change after about 50mi. everyone has there own break-in ritual. Have fun.
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#4
09-20-2006, 12:52 AM
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Cam is usually broken in with 20 mins. at 1800-2200rpm, then oil+filter change. After 100 or so miles change oil+filter again (vary rpms, nothing constant, to break in rings). Engine should free up and cool down after about 500 miles. Remember to use GM EOS and rotella 15-40 (or equivelent)for best cam and bearing protection.
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Derek B. Current best: 11.97@110 1.65-60' !!! '74 ventura,  (Fired july 14/06) '74 462 4-bolt (9.5-1), SCAT, Ross, T-II w/850DP (shaker455), TH350, Conti 10'' 3800, Supercomps, Magnaflow, 3'' Pypes, 3.73's, 28x13.5-15 ET streets.1970 Beismeyer 17' flatbottom vdrive, 11.8:1 455P, ported heads, dual Qjet tunnel ram. 
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#5
09-20-2006, 05:48 AM
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Change the oil with either VR1 or Rotella. VR1 preferred. Add EOS and run it for another 15 mins @ 2000+ rpm. I would change it one more time and then drive it as Billit suggests for a couple hundred miles. I wouldn't baby it but no blast to the redline either for the first hundred miles or so.
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71 Formula 433, Splayed cap 400 block, 4" stroke Scat forged crank, 6.8 Eagle rods, custom Autotec pistons. SD 295 KRE D ports, Old faithful hybrid roller, Torker II, Holley Sniper Stealth, Tribal Tubes, TKO 600, 3.73 Eaton posi. |
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#6
09-20-2006, 09:37 AM
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Thanks everyone for the great suggestions. Secondly where do I a find Rotella and GM EOS? I figure the Rotella is in the dairy section at NAPA but I have no idea where to find the EOS. I presume it is an additive offered at the dealers service dept? The engine runs smooth and sounds great after 20-25 mins at 2K and I dropped a little knowledge off to my 13 year old son. He helped alot with the re-assembly and seemed genuinely interested. I overheard him bragging to his buds about it as well, so I think the flame is flickering. Hopefully he'll drive a classic Pontiac someday instead of an import with a goofy wing on the back. Thanks again for all the info, much appreciated. ITO
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#7
09-20-2006, 10:56 AM
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GM EngineOilSupplement from any GM dealer parts department and the shell rotella 15-40 diesel engine oil can be had at most auto parts stores.
__________________
Derek B. Current best: 11.97@110 1.65-60' !!! '74 ventura, (Fired july 14/06) '74 462 4-bolt (9.5-1), SCAT, Ross, T-II w/850DP (shaker455), TH350, Conti 10'' 3800, Supercomps, Magnaflow, 3'' Pypes, 3.73's, 28x13.5-15 ET streets.1970 Beismeyer 17' flatbottom vdrive, 11.8:1 455P, ported heads, dual Qjet tunnel ram.
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