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GB 870

Dual port, Manley 43.7 intake and 37.5mm exhaust valves, welded above and below intake ports, ported, polished to larger gasket size and match ported to manifolds. Manifolds extra. Spark plugs relocated to clear bigger valve seats and increase reliability. (This is a must with 42mm intake seats, otherwise when the plug is installed it can pull the seat out of alignment). Reshaped chambers, Berg's 3-angle valve job, GB 272A Chevy type springs, GB 284 shims, GB 344 keepers, Berg seats and GB 283A heat treated chrome moly retainers. For high output/higher performance we recommend our GB 272BR springs which can be upgraded at an additional cost. Intake port bump is welded up to accommodate the larger Chevy type spring. Spring seating area welded and re-machined to captivate springs. This prevents spring breakage and fatigue providing far greater life. Pushrod tubes relocated for best ratio rocker arm clearance and large enough to accept the VW 025-109-335 pushrod tube and VW 070-109-345 seal. Includes porting and polishing labor of intake manifolds (price of manifolds additional). Bored to size of your choice. Semi-Hemi included if you desire, specify. Requires at least 1-5/8", or better yet 1-3/4", exhaust system. Inquire if you have other head needs to go with the engine parts you are buying from us. We can normally supply your needs as part of our commitment in supporting you for buying our parts.

MSRP Price: $3.00
Our Price: $2.00
Cash Price: $2,236.00
Pricing Notes: Not stocked. Require 3-5 work days to prepare.
This product was added to our catalog on Monday, January 24, 2005.
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