Lifter bore spacing?

[FastGT31]

i was wondering if anyone knows the lifter bore spacing on a 3.1l MPFI? i want to convert to mechanical roller lifters but need the spacing measurement. if anyone knows, i would appreciate any info.

[SappySE107]

If its the same as the 3500, i can try and get you a measurement. I don't see why they wouldn't be the same.

[Guest]

Crane already makes Lifters with the anti rotation bars. Just call them up.

[FastGT31]

thats what i want, crane solid rollers but when i called summit they told me that its different then a small block's and that they dont have any for my motor (figures). i guess i could call crane direct which is what i should have done from the beginning.

[geoffinbc]

According to Curtis, Crane does not make or sell them. But Crower should be able to fix you up.

[FastGT31]

i went to crowers web site and they have ones for a 2.8L it doesnt say if they are hydraulic or solid. im assuming they are solid. part number 66208-12. these should work?

[bszopi]

Wow... are they really worth $350 to you??

[FastGT31]

if they fit the engine and work, very much worth it. i drag race it regularly and want the engine to run good all the time. ive already destroyed my flat-tappet lifters in only 7500 miles.

[CNCguy]

Lifter bore spacing is 24.5mm on the 3100 & the 3900 and I assume it would be the same on all other 60V6s.

[Superdave]

Just to chime in, Yes the spacing on the SBC is larger. I tried to fit my Comp roller lifters from the T/A in one of my 3400's and it was way off...

I don't see why you couldn't have new anti-rotation bars made for it tho. The lifters are the same size. This might be something to bring up to Comp or Crane...

[FastGT31]

i called crower yesterday and they had a set in stock so i just ordered them. now i need a cam.