6 bolt head on a 7 bolt block?

[ktowntalon]

My friend is selling his SBR head with HKS 272 cams in it. It is on the 6 bolt motor. I have a 92 (second half) so my engine is a 7 bolt. Will this head fit my engine? What all would I need to do in a project like this. Is it just as simple as taking the old one off and bolting the new one on, timeing and that stuff?
ktowntalon

 

[boostx]

it should work fine , but they say that the stock 2g head flows better that a stock 1g ..
is the head you are getting ported

 

[gsxeclipse97]

If he has a 92 he has the exact same head thats on the. they didn't change the head until 95. that head has smaller ports and provides more tq. Stock to stock the 1g head flows more air

 

[romeen]

My friend is selling his SBR head with HKS 272 cams in it. It is on the 6 bolt motor. I have a 92 (second half) so my engine is a 7 bolt. Will this head fit my engine? What all would I need to do in a project like this. Is it just as simple as taking the old one off and bolting the new one on, timeing and that stuff?
ktowntalon

Yes, it will fit. gsxeclipse97 is correct, all 1G heads are the same regardless of whether it is from a 6 or 7 bolt block. The 2G head has smaller intake ports which makes the motor more responsive at lower rpm's but the 1G head flows more air in the higher rpm's. With the addition of the 272 cams it should flow quite well in the top end.

 

[ktowntalon]

well it is actually a Slow Boy Racing Head. It is ported and has larger valvse and tighter springs. But you are saying it is going to fit fine?

 

[TurboChrged93]

Yes, it will fit. gsxeclipse97 is correct, all 1G heads are the same regardless of whether it is from a 6 or 7 bolt block. The 2G head has smaller intake ports which makes the motor more responsive at lower rpm's but the 1G head flows more air in the higher rpm's. With the addition of the 272 cams it should flow quite well in the top end.

Wrong. all 1G heads are not the same. In SOME cases 7bolt 1G heads utilize slightly smaller machined holes for the headbolts. Make sure you use the corresponding headbolts.

 

[gsxeclipse97]

No that is not true. the head bolt just have to correspond witht the block not with the head. other wise they wont screw into the block.