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01-17-2018, 09:50 PM | #1 |
Registered User
Join Date: Oct 2016
Location: Dallas Texas
Posts: 2,879
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bbc retrofit roller update
Doing a cam swap on my BBC. Would like to get you all's opinion on the combination of parts...
BBC 1970 402 4-bolt block bored out .030 over ( .060 over 396 ) stock stroke piston dome at 10 to 15cc piston deck meets block deck at zero #063 Cast Iron heads, stock valves, 102cc combustion chambers ( may mill a bit ) will be adding long tube headers, 2 3/4 inch tubes dual plane Edel Performer II+ intake 1000 CFM MSD EFI TBI will be adding a 1" carb spacer 700r/1800 stall/3.73 posi compression is between 9:1 and 9.5:1 The cam we have chosen is the Comp xr276hr ( 224/239 Dur @.050, 110 LSA, 1900-5600 RPM: 410HP@5000, 467TQ@4000 ). A close second was the comp xr270hr. With this update, I'm looking for a gain in off the line performance ( may need more stall ) and mid range torque. Fire away please. No parts have been purchased yet, well except for the rocker arms -klb
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67 C10 fleet fuel injected '70 402, 700r4, 3.73 posi 07 335 sport turbo 6sp 94 Trans Am GT LT1 6sp posi -- sold after 22yrs 99 540 sport V8 6sp -- sold 73 240z L24 4sp -- given to friend 68 C10 step 350/350 3.73 open -- sold |
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