IDT Block Oil Pump Drive

chuck stevens wrote:The ULTRA and PREMIER blocks will go to 4.700 and, nominally, have .200 wall thickness (shared in the center due to siamesed bores).

Thanks Chuck.

Calm down Randy take a pill smoke on something brother. i know you cant JUST buy a block and hone and
go BUT i have seen some aftermarket chevy stuff very very crude and others pretty close to the builders
specs .I know what your saying .I have seen some come without holes tapped major casting flash and just
a very rough cast condition .My question was answered.Thanks

I know it wasnt .You just come across like you are trying to belittle people .I am sure thats not the
way .Just remember some of us are not prof engine builders .I have 25 years fixing cars not doing
motors thats why i come here to learn .Trust me i dont want to start crap with anyone.

chuck stevens wrote:The ULTRA and PREMIER blocks will go to 4.700 and, nominally, have .200 wall thickness (shared in the center due to siamesed bores).

Do these blocks come with a sonic test sheet?

Todd

No.

This is the second IDT Primier block I've purchased. The first one
I used for a drysump motor (645) so never ran into the oil pump
drive problem. That motor doesnt use a conventional pump.

I noticed the problem assembling this 2nd motor (Boss 600) thats
a conventional wet sump. The full hex oil pump drive that comes
with the Melling pump would work fine with the retainer ring moved
down, but it doesnt look anywhere near as heavy duty as the
Ford Motorsports piece so I've never used it.

To answer the other question, no the blocks dont come with sonic
test data, but they will go 4.700". I'm running mine at 4.650"
and 4.600". One word of caution - check for available rings before
you commit to a bore size!

Alky,
Did you run roller cam bearings or go with conv style ?

Todd

The IDT Premier block is bored for and requires
50mm roller cam bearings. So you dont have
an option for conventional cam bearings. I
used the ones from Ford Motorsports.