Now back in stock.

In photo Intake on top/exhaust below. These silicone bronze guides differ from stock Nissan guides in that they can be purchased from us in oversized outside diameters. Plus .001, .002, .003. Also Nissan guides where brass. Proper guide press fit is essential in rebuilds. Loosing a guide in older engines is more common depending on how many rebuilds have been performed.

These great kits replace factory head bolts and eliminate problems associated with head bolt use as opposed to more reliable studding of block. Common problems include bolt breakage, block thread damage and breakdowns, less clamping force, and bolt stretch. Keep that head from movin' around. Racers love this stuff. Manufacturers note: Material - 8740 Chrome moly. Tensile strength 190,000 to 200,000 PSI. U.S. made. Torque spec. 65 FT LBS Moly Lube. 75 FT LBS Oil.

Lots of extras just like our full engine sets featuring re-usable gaskets and nitrile heat resistant rubber gaskets. You build the set you need! Note our re-usable int/ext gasket can be used with the stock exhaust manifold..just remove the center web.

Parts pictured left to right, top to bottom here are your gaskets: Re-usable .093 metal sheath int/ext, cylinder head with rear oil gallery sealing ring, rubberized cork valve cover , nitrile rubber heat resistant re-usable valve cover (optional), 8 - valve stem seals, nitrile rubber oil cap, .093 metal sheath 3 - hole collector for header, 4 - hole top thermostat housing, 2 - hole bottom thermostat housing, 4 - .062 carb phenolic block, 2 - nitrile rubber carb to air filter, 2 - valve cover grommets. Carb phenolic blocks with gaskets attached available...just ask.

Lots of extras just like our full engine sets featuring re-usable gaskets and nitrile heat resistant rubber gaskets. You build the set you need!

Note our re-usable int/ext gasket can be used with the stock exhaust manifold..just remove the center web.

Parts pictured left to right, top to bottom here are your gaskets: Re-usable .093 metal sheath int/ext, cylinder head with rear oil gallery sealing ring, rubberized cork valve cover , nitrile rubber heat resistant re-usable valve cover (optional), 8 - valve stem seals, nitrile rubber oil cap, .093 metal sheath 3 - hole collector for header, 1 - 3 - hole top thermostat housing, 2 - 3 - hole bottom thermostat housing, 4 - .062 carb phenolic block, 2 - nitrile rubber carb to air filter, 2 - valve cover grommets. Carb phenolic blocks with gaskets attached available...just ask.

Special note. We can and will supply the correct early style o-ring valve seals to customers for pre ear type valve stem seal heads. We recommend replacing them with the later style pictured as they work better. They do require modification for early heads. Call for more details and help.