Slowly getting back to financial stability , I'm starting on my sd4 again. So does a sd4 have the same size/spacing as a sbc ? I've seen that crane has a new hydraulic roller lifter that will go to 8500 rpms. Also the oil passage the same ?
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85 GT 3.4 14.9 @ 90 1.9 60' Old TH125/3.06 Unknown New 4T60/3.42
I used new AC Delco # HL120 hydraulic roller lifters in my Indy's SD4 engine (good to 6500rpm). They were just the regular Iron Duke w/roller cam replacements and use the stock retainers.
Got a link to that article with a part number? I've found people "talking" about it saying it was Crane's regular SBC lifter pushed to 8500 rpm. It sounds like there was more to it than just the lifters. Cam and spring pressures also made a difference.
According to Car Craft Feb 14 they proved that their (Crane) new hydraulic roller lifters will go to 8500 with no problem. 7 will make me happy. The cam they used was 268/272 dur @ .050 AND .640 lift. Springs were 225lbs close, rated at 544 lb. My cam will be less 230/232 dur @.050, .600/.605 lift. Add 20 lbs boost = fun. Lifter PN# 11532-16
Roller lifters for SD4 is Crane PN 20518-8 (now discontinued). I don't know if that is solid or hydraulic - no description on parts list. But Crane may be able to cross-reference that to a new number equivalent.
According to that he could probably use the Cadillac CTS-VR 8500 rpm lifters for the 1998-2000 LS engine. A set of 16 is enough for TWO engines.
In my Indy's SD4 I used the stock cage type anti-rotation guides like these. Those are also the studs to attach the side cover. Don't know if "barred" lifters would work.
[This message has been edited by fierosound (edited 01-05-2014).]
Originally posted by fierosound: Delco didn't cross-reference to any V8s (only the 2.5 Duke and 4.3 V6) but the Melling lifter at Summit does. 2.5 lifter: http://www.summitracing.com...cations/make/pontiac
According to that he could probably use the Cadillac CTS-VR 8500 rpm lifters for the 1998-2000 LS engine. A set of 16 is enough for TWO engines.
In my Indy's SD4 I used the stock cage type anti-rotation guides like these. Those are also the studs to attach the side cover. Don't know if "barred" lifters would work.
http://www.northernautoparts.com/part/s4-vl115 With the link bar style, even if the OEM lifter guide boss isn't in the way, you still ha e to be concerned about lifter bore spacing or else they can bind the links
[This message has been edited by KurtAKX (edited 01-08-2014).]
Originally posted by fierosound: Delco didn't cross-reference to any V8s (only the 2.5 Duke and 4.3 V6) but the Melling lifter at Summit does. 2.5 lifter: http://www.summitracing.com...cations/make/pontiac
4.3 is a small block chevy with two cylinders chopped off. lifters are EXCATLY same as small block chevy.
once upon a time, when i was playing with the stroker 4 cyl, i had lunati solid roller lifters in it source with small block chevy part numbers
4.3 is a small block chevy with two cylinders chopped off. lifters are EXCATLY same as small block chevy. once upon a time, when i was playing with the stroker 4 cyl, i had lunati solid roller lifters in it source with small block chevy part numbers
In that case, I'd go with Cadillac CTS-VR 8500 rpm lifters for the 1998-2000 LS engine. Those are proven. The PN 11532-16 lifters sound like regular lifters, that they managed to "push" with the right cam and valve springs.
[This message has been edited by fierosound (edited 01-13-2014).]