Ly6?

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May 16, 2012 | 02:18 PM

#21

Hy82e

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From: Fort Worth, TX

Quote:

Originally Posted by 3pedals

I have an LY6, the pistons are dished, and have exhaust valve reliefs, and NO intake reliefs. Here is a pic of my pistons with very small flycuts for the intake valves

I ran a 227/235 @ .050", 114 +4 with lots of PtoV clearence, I would think a 231-239 on a 114 would fit, but as you tighten up the LSA things start to get closer.

3pedals I missed if you milled the heads at all. Also you said you had plenty of PtoV, but you have cut your pistons some, insurance, or was that for a different cam?

I'll be using a similar cam 226/234 113+3 lsa. I plan to mill about .030" and run a .040" gasket for compression. I am without a doubt going to check for clearance just getting an idea of what to expect.

Also what are you daily driver guys current opinion on keeping the ly6 oil pump after the vvt delete, and how much real world driving have ya'll put down?

May 16, 2012 | 04:33 PM

#22

3pedals

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From: WPG MB

With the 227/235 114+4 cam and un cut l92 heads I had lots of PtoV clearance.
I cut the valve releifs for a much larger cam and a substantial head cut.

May 20, 2012 | 09:27 PM

#23

jetsbaby

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From: Chandler AZ

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May 20, 2012 | 09:40 PM

#24

bad67ls

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From: Bay shore,ny

Quote:

Originally Posted by 3pedals

11.39 @ 120, @ 3425 race weight. this is using a stick shift. an auto would ET 2-3 tenths quicker if the converter was right.

unless your shifting sucks, this is simply not true.

we tested this idea in my friends 10.50 73 camaro. it ran the EXACT same e.t. it did with the 5 speed in it and mph was better with the stick.

FACT

he then took the sissy auto out and put the stick back in it. haha

May 20, 2012 | 09:44 PM

#25

GC99TA

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From: Central VA

Quote:

Originally Posted by bad67ls

What converter was used with the auto and what were the 60' for each? Same DA?

May 20, 2012 | 09:48 PM

#26

bad67ls

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From: Bay shore,ny

dont know off hand for converter, but same track same weekend same da

May 20, 2012 | 09:49 PM

#27

bad67ls

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From: Bay shore,ny

60' was in the 1.5's for both also. only thing that changed was the mph with having to drag the automatic

May 20, 2012 | 10:00 PM

#28

GC99TA

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From: Central VA

Quote:

Originally Posted by bad67ls

dont know off hand for converter, but same track same weekend same da

Quote:

Originally Posted by bad67ls

60' was in the 1.5's for both also. only thing that changed was the mph with having to drag the automatic

Interesting. I would agree that a stick can et as well as an auto car as long as you can get it to 60' the same. But that's usually the hard part....unless the converter isn't right for the auto car. Cool comparison to test two trans types all in the same weekend at the same track. Your friend must have a lot more ambition than me......lol.

Sorry for the hijack OP.