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#1
01-19-2014, 11:04 PM
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421 Piston Recommendations
Hi all, Time to get pistons for the original WG 421 for my 1965 2+2. Planned build will be .060 overbore (necessary) aftermarket forged rods, moly rings, original 76 casting heads, Ram air IV cam, Rhodes lifters, Tripower and H.O. exhaust manifolds. I do not have a ton of $$$ for this motor so no custom units for me. Should I go cast? forged? any recommendations for a manufacturer? The last one I built had a set from Warrior racing and I do not think they are in business any longer. any suggestions would be helpful. Thanks in advance!
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1965 2+2 1966 Catalina Convert 1968 Firebird 350 1969 GTO 1967 Bonneville 4 Dr Brougham 428 1967 Bonneville 2 dr 1959 Buick LeSabre 2dr |
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#2
01-19-2014, 11:12 PM
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| The Following 2 Users Say Thank You to b-man For This Useful Post: | ||
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#3
01-26-2014, 12:22 PM
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My two cents, going .060 over will create more heat.
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#4
01-26-2014, 03:23 PM
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If you're gonna beat on it Forged pistons are a must. A good balance Job is a must also
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so many pontiacs, so little time.................. moderator is a glorified word for an unappreciated prick.................. "Only two things are infinite, the universe and human stupidity, and I'm not sure about the former." --Albert Einstein "There is no such thing as a good tax." "We contend that for a nation to tax itself into prosperity is like a man standing in a bucket and trying to lift himself up by the handle." - Winston Churchill |
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#5
01-26-2014, 06:04 PM
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I'm running BRC forged in the Catalina.
Jim
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65 Catalina sedan. Allen Thomas Performance 495. KRE Heads at 310cfm ported by SD Performance, ProSystems Dominator carb on ported Victor intake, P-Dude custom grind hydraulic roller, MSD ignition, 3.50 Moser/Ford rear. F-Glass front bumper by son Rob, rear by the old man and joint effort for trunk lid. 3950# w/driver. Best of 9.5761/139 on 175 shot, 6.01 /114 in 1/8. |
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#6
01-26-2014, 08:04 PM
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8 lug, I dont have a choice on .060. I know the heat build up will be a problem but I really want to use the original block. I will not be drag racing but will be thumping around on the street. being a manual trans car, it will see lots of RPM swings.
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1965 2+2 1966 Catalina Convert 1968 Firebird 350 1969 GTO 1967 Bonneville 4 Dr Brougham 428 1967 Bonneville 2 dr 1959 Buick LeSabre 2dr |
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#7
01-26-2014, 10:45 PM
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.060 is not a problem in these early motors. Won't run noticably warmer.
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 Mike McCarty You can drop the line, but you'll never kill the spirit!Pump gas 535 w/Marcella cv/1's. 11.0 compression, 4000 stall, 3.73 gears, 275 radial, to the axle exhaust, 3470# w/driver. 9.49 @ 140..........so far |
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#8
01-27-2014, 11:30 AM
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As with Jim above, I am also running BRC Forged pistons in my 63 - 421 bored 30 over (~428).
BRC has a very good tech dept should you have any questions. (386)364-5623 However, I did not purchase them directly through BRC,. Mine were purchased through Ken at Ken's Machine Shop 512 S. Main Street Brooksville, FL 34601 Phone (352) 796-8800 Email: [email protected] http://www.angelfire.com/fl4/pontiacdude428/ Ken helped in determining the correct dish-out which enabled me to run on pump gas ~ 9.8 compression ratio. |
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#9
01-27-2014, 12:51 PM
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Did the block already go +030?
If you could sneak by at 4.125 that gives you a lot of ring choices. The +.005 Race Tec is a sweet piece. |
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#10
01-27-2014, 02:31 PM
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Assume all thread watchers have seen the build in HPP -- very cool, and much along these lines. Really put a hurt on the dyno!!!
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