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Pushrod Clearance 1.6RR Vortec Heads

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06-16-2009, 10:12 PM

LB87FORMULA

Junior Member

Join Date: Aug 2001

Location: Sagamore Hills, Ohio, USA

Posts: 68

Car: 87 Pontiac Formula

Engine: 5.7L Crate Engine

Transmission: 5spd NWC

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Pushrod Clearance 1.6RR Vortec Heads

I am in the process of converting my 350 TPI to ramjet intake and vortec heads. I installed a ZZ4 cam and modified "ZZ5" vortec heads with 1.6 RR Comp Cams Pro Mag Rockers. The push rods are 10241740 new GM Performance.

Per the pictures, I have very slight clearance. Do I need to elongate the holes, or is this enough?

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	IMG_1345s.jpg (170.0 KB, 8 views)
	IMG_1348s.jpg (166.8 KB, 7 views)

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87 Formula TPI 5spd
350 Crate Engine
LT1 Cam, 24lbs Accel Injectors,
180 Thermo, SLP Cold Air Intake, Self-Modified EPROM

06-16-2009, 10:12 PM

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Pushrod Clearance 1.6RR Vortec Heads

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16, 16rr, clearance, heads, pushrod, pushrods, rr, vortec

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