whiskeytango
Well-Known Member
- Joined
- Feb 20, 2019
- Messages
- 395
- Reaction score
- 751
- Points
- 93
- Location
- NQLD
- Members Ride
- VS SIII 5.0
304 rebuild
After months of debate with myself/bank account I’ve decided I want to do a freshen up with higher compression pistons to allow for a decent mild cam while keeping it standard stroke.
I’m looking for a minimum of 9.5:1 compression to possibly pair it with a Camtech 49907. @50 223 227 and 585 lift.
Engine’s a VT roller cam 304 with MAF, banana manifold (will keep) and 5 speed manual. It’s going in a VS Ute with Pacemakers into dual 2.5” exhaust. Diff will also be 3.45 or 3.7 by then.
Honestly I’ve never rebuilt a bottom end before. I have no worries that I can do all the mechanical work, I am a little lost as to how to properly calculate compression when choosing what pistons to use. I mean will any flat top on a stock rod get me over 9.5:1 or do I have to fully measure the bores and do the math?
Throughout the rest of the year I’m going to start collecting parts so I can hopefully get it moving around the Christmas holidays.
Here’s a list I’ve started with what I believe I’ll need. Bolt ons, oils and all that good stuff. I’ve got some quotes on some items but most are just rough prices.
It’ll be a great help if you can let me know if I’m forgetting anything. Any input apart from “buy an LS” will be great even though looking at that total it’d make more sense.
Full gasket set $250
Bolts $150
Camtech 49907 $770
Link bar lifters $595
Valve Springs/retainers $462
Yalla Terra Roller Rockers $660
Rollmaster Timing chain $150
Powerbond Race Balancer $300
Pistons $300
Rings $200
Head skim/cleanup $400
Bore and hone $400
Tune $1,200
Coolant $30
Oil/filters $100
Waterpump $100
Oil pump $200
Belts $70
Engine Mounts $40
Paint/sealant/deg/random $200
Total $6,577
After months of debate with myself/bank account I’ve decided I want to do a freshen up with higher compression pistons to allow for a decent mild cam while keeping it standard stroke.
I’m looking for a minimum of 9.5:1 compression to possibly pair it with a Camtech 49907. @50 223 227 and 585 lift.
Engine’s a VT roller cam 304 with MAF, banana manifold (will keep) and 5 speed manual. It’s going in a VS Ute with Pacemakers into dual 2.5” exhaust. Diff will also be 3.45 or 3.7 by then.
Honestly I’ve never rebuilt a bottom end before. I have no worries that I can do all the mechanical work, I am a little lost as to how to properly calculate compression when choosing what pistons to use. I mean will any flat top on a stock rod get me over 9.5:1 or do I have to fully measure the bores and do the math?
Throughout the rest of the year I’m going to start collecting parts so I can hopefully get it moving around the Christmas holidays.
Here’s a list I’ve started with what I believe I’ll need. Bolt ons, oils and all that good stuff. I’ve got some quotes on some items but most are just rough prices.
It’ll be a great help if you can let me know if I’m forgetting anything. Any input apart from “buy an LS” will be great even though looking at that total it’d make more sense.
Full gasket set $250
Bolts $150
Camtech 49907 $770
Link bar lifters $595
Valve Springs/retainers $462
Yalla Terra Roller Rockers $660
Rollmaster Timing chain $150
Powerbond Race Balancer $300
Pistons $300
Rings $200
Head skim/cleanup $400
Bore and hone $400
Tune $1,200
Coolant $30
Oil/filters $100
Waterpump $100
Oil pump $200
Belts $70
Engine Mounts $40
Paint/sealant/deg/random $200
Total $6,577