#2
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Re: MOTOR OIL
I use Valvoline VR1 20/50 in my 427. There are several good oils with the required zinc for these engines but most are not available at your local parts store.
James
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1968 Beaumont SD396 |
#3
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Re: MOTOR OIL
I use Brad Penn 20W-50 or 15W-40 in my 69 Z/28. Also Rotella-T 15W-40 is good too.
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#4
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Re: MOTOR OIL
Valvoline VR1 20/50
With Edelbrock Zink additive. There is an old thread on hear that we discussed the same question, but I can not find it to post the link.
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"NOSTALGIA It takes us to a place were we ache to go again" |
#6
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Re: MOTOR OIL
If your motor is built right and your clearances aren't super crazy loose you sure don't need 20-50.
I run Brad Penn 10-30 , on the dyno 20-50 cost 12hp versus the 5-20 I use during racing. And those were Back to Back 180* oil temp and 160* water temp. So it's an apples to apples comparison.
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Tim Clary 68 RS/Z28 69 Olds Cutlass S 70 Chevelle SS LS6 70 AMX 390 Go-pack 71 Torino GT 429cj |
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