1965 C10 Fleet Project - unfinished business

[Paul Y]

Looks like a nice truck - when's the next instalment as I take it that you are a bit further on than the pictures above!

P.

[jmarkha1]

Thanks P
Yes - a few months worth to catch up on.
I’ll post something every day to get up to current day :-)
That way you can keep me honest with updates

Originally Posted by Paul Y

Looks like a nice truck - when's the next instalment as I take it that you are a bit further on than the pictures above!

P.

[jmarkha1]

LS engine stripdown

I bought a used 'donor' engine - sight unseen through a engine buyer in UK - a bit of a gamble and the 'first' engine that arrived looked tidy BUT one of the pistons didnt move when turning the motor over! - this engine was collected and inspected - a rod had snapped and tried to escape through the side of the case - without quibble another engine was sent overnight and I started again.

The replacement looked good on first inspection and once fully stripped down all I could find was a pitted cam lobe and a missing lifter.

The engine is a 2005/2006 LQ4 - probably out of a delivery truck or similar - the front pulley is a long version and it has 317 heads that are lower compression.

The rods are the later gen4 floating pin type but the ignition is a 24 tooth early version.

All the heads seemed good and the bores still had crosshatching intact - more on that later!

The plan was to change out mains, rod, rings and all the usual seals and put it back together. However, a schoolboy error changed things.

[jmarkha1]

Engine build - the scratched bore!

I cleaneded everything up and built the bottom end - time to install the pistons, rods - stupidly I thought I would use my trusty old ring compressor - nomally used for 90mm vw stuff so maxed it out for the LS pistons and ended up twisting a ring and then pushing it down the bore.

I might have got away with a ball hone but did not want to risk the build so decided to have the block cut .30" and decked. They also cut the heads .30" to raise the CR up a little over 10:1.

I used Summit LS PRO forged pistons along with some valvetrain upgrades from Brian Tooley Racing.

The entire bottom end was dynamically balanced and blueprinted and I sourced MSD intake kit along with a Holley 750 DP to make a simple motor that I could add onto at a later date if needed :-)

This all went together with new ancillaries and accessory drive from ICT to make a tidy little motor - now to source a 4L80e for it.