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iron block indy 440-1 heads VALVE LASH SETTING???? #662901 04/06/10 08:16 PM 04/06/10 08:16 PM
Joined: May 2006 Posts: 205 Chicago,Illinois N nosboy OP enthusiast
nosboy OP enthusiast N Joined: May 2006 Posts: 205 Chicago,Illinois	I have a World Products 4.500 siamese bore Iron block with Indy 440-1 heads CNC325cc.. the cam card (crane 688821) says .020 intake and .020 exhaust.. I understand that when the motor heats up, the aluminum expands at a different rate than the iron does... My question is,,, What do I set the valve lash at COLD considering the spec says .020 intake and .020 exhaust (HOT) Thanks for all your help.. nosboy

Re: iron block indy 440-1 heads VALVE LASH SETTING???? [Re: nosboy] #662902 04/06/10 08:51 PM 04/06/10 08:51 PM
Joined: Mar 2008 Posts: 5,746 Ontario, Canada Dodgem master
Dodgem master Joined: Mar 2008 Posts: 5,746 Ontario, Canada	I would set mine .010 and .012 to acheve .020/.020 or go .012/.014 if it ends up .020 loose you will never know.

Re: iron block indy 440-1 heads VALVE LASH SETTING???? [Re: Dodgem] #662903 04/06/10 09:10 PM 04/06/10 09:10 PM
Joined: Dec 2008 Posts: 1,200 UK 6 602heavy pro stock
602heavy pro stock 6 Joined: Dec 2008 Posts: 1,200 UK	Set them @ .014" cold , this should get you pretty close assuming RR is the same as spec card. Last edited by 602heavy; 04/06/10 09:12 PM.

Re: iron block indy 440-1 heads VALVE LASH SETTING???? [Re: 602heavy] #662904 04/06/10 09:27 PM 04/06/10 09:27 PM
Joined: Jan 2003 Posts: 16,923 NC 440Jim I Live Here
440Jim I Live Here Joined: Jan 2003 Posts: 16,923 NC	Quote: Set them @ .014" cold , this should get you pretty close assuming RR is the same as spec card. Then check it hot once (quickly) and give yourself an actual number. I set my intakes tighter than that, but it isn't because of expansion, it just works with my combo. 1993 Daytona, 5.50 at 130mph (1/8) 1.19 sixty ft (PG). Link to 572 B1 - Part 1

Re: iron block indy 440-1 heads VALVE LASH SETTING???? [Re: 440Jim] #662905 04/06/10 10:49 PM 04/06/10 10:49 PM
Joined: Jan 2003 Posts: 9,983 Frostbitefalls MN (Rocky&Bullw... gregsdart master
gregsdart master Joined: Jan 2003 Posts: 9,983 Frostbitefalls MN (Rocky&Bullw...	Quote: Quote: Set them @ .014" cold , this should get you pretty close assuming RR is the same as spec card. Then check it hot once (quickly) and give yourself an actual number. I set my intakes tighter than that, but it isn't because of expansion, it just works with my combo. Like they said. 8..603 156 mph best, 2905 lbs 549, indy 572-13, alky

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