8. Heads. There are many heads you can use and there are little differences between them.

First off there is the GSR head which give you a higher compression than the other b-series heads because of its 41.6cc combustion chamber. The smaller combustion chamber makes .2 more compression. Then there is the b16/17a head which are the same the only difference is that the b17a has a p61 stamped on the back of the intake manifold the b16/17a head is a better flowing head 5.25% in fact and a larger combustion chamber 42.7cc's. Then there is the type r which flows even better than the b16a head and has the same combustion chamber. To put this in perspective the b18a/b has a 45cc combustion chamber.



9. GSR Block Girdle. You can use the GSR block girdle on the ls. This will reinforce the bottom end and keep the moving parts in its place. All you need to get is the 3 main caps in the middle, bolts, windage, oil pan and oil pick.



10. Pistons. You can use any b-series vtec piston in your ls block. Any 1.6 b-series piston will be raised by about one full point in the ls block like the b16a(pr3 pistons will raise it from the stock 10.2 comp in the b16a to 11.2ish in the ls block so keep this in mind when building the ls block. Also keep in mind about the combustion chamber size (See heads) when building the motor. . With a GSR, add .2 comp to the stock ratio. (Warning: these are all estimates: they could be off a little).

B16a head and pr3 pistons 11.2

B16a head and p30 pistons 11.4

B16a head and p72 (ao) pistons 9.9

B16a head and p72 (00) pistons 10.5

B16a head and p73 (ao) pistons 10.7

B16a head and p73 (00) pistons 11.2

B16a head and p61 pistons 10.4

B16a head and pct (CTR) pistons 12.2-3ish

B16a head and pr4 pistons 9.5

Add .2 to all to calculate the GSR head with all of these.

Type r and b17a heads have the same combustion chamber so calculates the same.