Head and Cylinder Bolts

180,000 tensile strength ARP stainless (chromoly 200,000 tensile strength studs are non-stainless).
The fluted shanks allow the studs to stretch to prevent the threads from pulling out. The bolts don’t loosen and oil leaks are eliminated. Special triangular reduced shank studs help align the head with the cylinders. Fluted bolts have a larger diameter than reduced diameter shanks and more resistance to twist than reduced diameter bolts. Stock heads require installation of US 3/8″ coarse thread TimeSerts or Helicoils. Full Auto heads with British thread Helicoils need conversion to US threads with oversize TimeSerts (“Big-Serts”).

Showing all 8 results

Kit #0 – Reduced shank ARP 3/8″ x 16 tpi SS cylinder through bolts with rolled threads for ALL BOLT THROUGH CYLINDERS (iron and alum – stock, Maney or Molnar).
$129.00 Select options
Kit #1 – Reduced shank ARP 3/8″ x 16 tpi SS head bolts with rolled threads for MANEY ALUM CYLINDERS
$129.00 Add to cart
Kit #2 – Reduced shank British ARP 3/8″ x 26 tpi SS head bolts for STOCK CYLINDERS (out of stock until end of december)
$139.00 Add to cart
Kit #3 – Reduced shank chromoly studs with rolled threads for FA/STS and STOCK HEADS WITH MANEY or MOLNAR ALUM CYLINDERS. SS spring washers and 12 pt ARP nuts. Stock and early FA heads require inserts.
$119.00 Select options
Kit #5 – Reduced shank 3/8″ x 16 tpi into head chromoly studs with rolled threads for STS and STOCK HEADS with STOCK IRON CYLINDERS. SS Spring washers. High strength 416 alloy SS Long nuts with 12 pt ARP short nut. Stock and early FA heads require inserts.
$139.00 Add to cart
Kit #6 – Reduced shank 18 tpi into cylinders ARP 5/16″ SS studs with rolled threads for MANEY ALUM CYLINDERS WITH STOCK or FA/STS HEADS. 12 pt SS nuts and spring washers
$79.00 Add to cart
Kit #7 – Reduced shank British 5/16″ x 26 tpi chromoly studs for STOCK IRON and MOLNAR ALUM CYLINDERS WITH STOCK OR FA/STS HEADS. SS nuts and spring washers. (out of stock until end of december)
$89.00 Select options
3/8″ – 16 TPI Time-Sert Kit for head studs with extra tap for bottoming
$159.00 Add to cart

Showing all 8 results

Kit #0 – Reduced shank ARP 3/8″ x 16 tpi SS cylinder through bolts with rolled threads for ALL BOLT THROUGH CYLINDERS (iron and alum – stock, Maney or Molnar).

Kit #1 – Reduced shank ARP 3/8″ x 16 tpi SS head bolts with rolled threads for MANEY ALUM CYLINDERS

Kit #2 – Reduced shank British ARP 3/8″ x 26 tpi SS head bolts for STOCK CYLINDERS (out of stock until end of december)

Kit #3 – Reduced shank chromoly studs with rolled threads for FA/STS and STOCK HEADS WITH MANEY or MOLNAR ALUM CYLINDERS. SS spring washers and 12 pt ARP nuts. Stock and early FA heads require inserts.

Kit #5 – Reduced shank 3/8″ x 16 tpi into head chromoly studs with rolled threads for STS and STOCK HEADS with STOCK IRON CYLINDERS. SS Spring washers. High strength 416 alloy SS Long nuts with 12 pt ARP short nut. Stock and early FA heads require inserts.

Kit #6 – Reduced shank 18 tpi into cylinders ARP 5/16″ SS studs with rolled threads for MANEY ALUM CYLINDERS WITH STOCK or FA/STS HEADS. 12 pt SS nuts and spring washers

Kit #7 – Reduced shank British 5/16″ x 26 tpi chromoly studs for STOCK IRON and MOLNAR ALUM CYLINDERS WITH STOCK OR FA/STS HEADS. SS nuts and spring washers. (out of stock until end of december)

3/8″ – 16 TPI Time-Sert Kit for head studs with extra tap for bottoming