Quote:
Originally Posted by Jay S
It depends how aggressive the profile is. The body is rated for up to 500 lbs. But they won’t make it anywhere close to 500 lbs in a Pontiac and perform well. I’d say 150lbs seat an 400 open with .650ish lift is safe with the Bulter XR cam and evo’s. The OF1 could probably run about 165 lbs and 430 open with .650 ish lift and go a few hundred more RPMs than the more aggressive XR.
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Good to hear. My KREs have PAC 1914 springs:
155lbs @ 1.835, 385 lbs @ 1.200
With the Harland Sharp 1.65 rockers, my lift is .627/.632
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Will Rivera
'69 Firebird, 400/461, 290 Eddy D-Ports, HR 230/236, 4l80E, 8.5 Rear, 3.55 gears
'69 LeMans Vert, XS 350, #47 heads, TH400, 10 Bolt 3.23 gears, work in progress
‘66 Lemans, 455, 310 KRE D-Ports, HR 236/245, TH400, GV OD, 12 bolt 3.73 gears - see it here:
https://youtu.be/RP_s1wJKm_Y?si=K0NZxoTyaGcj8Dcb
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