502 Lifter Question

Caperat · 07-14-2009, 09:07 PM

I have a mid 90's 502 with non adjustable rocker arms that came from the factory with a flat tappet hydraulic cam rated at 440 hp. The cam and lifters were sold a lond time ago. Does this block take the stock height hyd. lifter that is used in all the old MARK IV blocks or does it take a taller flat tappet lifter? I'm fairly sure that any roller cam installed in this block needs the tall lifters because of tiebar clearence. Any help would be greatly appreciated. ----- Thanks

Rich Biebel · 07-14-2009, 09:18 PM

I think you can use any std solid or hydraulic lifter but if it's a roller it needs the taller lifters as the lifter bosses are +.300". The onlyte thing you might need to check is if the lifter hangs down to far and uncovers the oil passages on the lifter body. I built a 502 for a customer a long time ago so I don't really recall the cam details but I think it was a rolller and we used the tall lifters.

Rich Biebel · 07-14-2009, 09:20 PM

I think you can use any std solid or hydraulic lifter but if it's a roller it needs the taller lifters as the lifter bosses are +.300". The only thing you might need to check is if the lifter hangs down too far and uncovers the oil passages on the lifter body. I built a 502 for a customer a long time ago so I don't really recall the cam details but I think it was a rolller and we used the tall lifters.

Mike Taylor 3601 · 07-15-2009, 07:14 AM

Flat tappets are same as any BBC. The roller lifters are only ones different have to be taller so tie bars clears tall lifter bosses.
Mike Taylor 3601

Caperat · 07-16-2009, 08:29 AM

Thankyou very much.

07-14-2009, 09:07 PM	#1
Caperat Junior Member Join Date: Jun 2006 Location: CANADA Posts: 76 Likes: 0 Liked 0 Times in 0 Posts	502 Lifter Question I have a mid 90's 502 with non adjustable rocker arms that came from the factory with a flat tappet hydraulic cam rated at 440 hp. The cam and lifters were sold a lond time ago. Does this block take the stock height hyd. lifter that is used in all the old MARK IV blocks or does it take a taller flat tappet lifter? I'm fairly sure that any roller cam installed in this block needs the tall lifters because of tiebar clearence. Any help would be greatly appreciated. ----- Thanks

07-14-2009, 09:18 PM	#2
Rich Biebel VIP Member Join Date: Jun 2007 Location: Northern New Jersey suburbs Posts: 2,314 Likes: 25 Liked 544 Times in 213 Posts	Re: 502 Lifter Question I think you can use any std solid or hydraulic lifter but if it's a roller it needs the taller lifters as the lifter bosses are +.300". The onlyte thing you might need to check is if the lifter hangs down to far and uncovers the oil passages on the lifter body. I built a 502 for a customer a long time ago so I don't really recall the cam details but I think it was a rolller and we used the tall lifters. __________________ Rich Biebel S/C 1479 Stock 147R

07-14-2009, 09:20 PM	#3
Rich Biebel VIP Member Join Date: Jun 2007 Location: Northern New Jersey suburbs Posts: 2,314 Likes: 25 Liked 544 Times in 213 Posts	Re: 502 Lifter Question I think you can use any std solid or hydraulic lifter but if it's a roller it needs the taller lifters as the lifter bosses are +.300". The only thing you might need to check is if the lifter hangs down too far and uncovers the oil passages on the lifter body. I built a 502 for a customer a long time ago so I don't really recall the cam details but I think it was a rolller and we used the tall lifters. __________________ Rich Biebel S/C 1479 Stock 147R

07-15-2009, 07:14 AM	#4
Mike Taylor 3601 VIP Member Join Date: Oct 2008 Location: Somerset,Ky Posts: 1,371 Likes: 352 Liked 304 Times in 102 Posts	Re: 502 Lifter Question Flat tappets are same as any BBC. The roller lifters are only ones different have to be taller so tie bars clears tall lifter bosses. Mike Taylor 3601

07-16-2009, 08:29 AM	#5
Caperat Junior Member Join Date: Jun 2006 Location: CANADA Posts: 76 Likes: 0 Liked 0 Times in 0 Posts	Re: 502 Lifter Question Thankyou very much.