Which batch of parts should I use
Posted: August 18th, 2022, 7:54 am
have been gathering things to build a stroker for several ( over 20 years ) and so now I have batches of parts. Yesterday I picked up a fully machined block and balance assembly and so now I have several directions I can go, which is confusing. ( I have all of these parts )I originally owned 2 jeeps and planned to do two builds.
Here are the parts I picked up. The guy was building a stroker for a 69 Rambler that was to be Turbo charged.
Block 1997 NVH, fully machined .030 over, decked for zero, line bored with main studs
Pistons AutoTEC Bore 3.905, CD 1.380, INV Dome -36.5 CC Pressed Pins
Rods Appear to be SCAT forged
Crank is a 4Counter Weight Short Snout
Rings Total Seal Gapless
Assembly was balanced
This will be going in a 1988 YJ with a 999 Automatic and Replacing a 4.2 with a 4.0 head and efi system. ( And V-BELTS )
I have 2 Heads that I have had done in Indianapolis. One my be ruined since the bag was cut that it has been stored in and it has rust on it. I was thinking that I might take this head and see if it can be milled and saved. It was ported and polished and had the Mopar performance oversized valves and springs installed.
Using the compression calculator on the strokers site I see 8.2 about for the compression ratio, which is about the same as a 4.2 Stock.
If the head can be saved and milled .060 would this be a decent build since the block is set up for this combination ? Also what cam would you recommend ?
My second option
Use the block from above
Pistons Ross Net Dia 3.90, CH 1.365, Pin .912 ( Full Float ) Dome CC -26
Rods Eagle H Beam 6.150
Crank HW 12 Counter Weight, Long Snout Casting 3214723
Rings Total Seal Classic
This assembly was spin balanced with weight added to the crank
Head
Indy Cylinder Head reworked, ported polished with Mopar oversize valves & Springs checked for a .486 lift cam
Rockers (Mopar) Aluminum fully adjustable ( I heard there are no good ?)
Here are the parts I picked up. The guy was building a stroker for a 69 Rambler that was to be Turbo charged.
Block 1997 NVH, fully machined .030 over, decked for zero, line bored with main studs
Pistons AutoTEC Bore 3.905, CD 1.380, INV Dome -36.5 CC Pressed Pins
Rods Appear to be SCAT forged
Crank is a 4Counter Weight Short Snout
Rings Total Seal Gapless
Assembly was balanced
This will be going in a 1988 YJ with a 999 Automatic and Replacing a 4.2 with a 4.0 head and efi system. ( And V-BELTS )
I have 2 Heads that I have had done in Indianapolis. One my be ruined since the bag was cut that it has been stored in and it has rust on it. I was thinking that I might take this head and see if it can be milled and saved. It was ported and polished and had the Mopar performance oversized valves and springs installed.
Using the compression calculator on the strokers site I see 8.2 about for the compression ratio, which is about the same as a 4.2 Stock.
If the head can be saved and milled .060 would this be a decent build since the block is set up for this combination ? Also what cam would you recommend ?
My second option
Use the block from above
Pistons Ross Net Dia 3.90, CH 1.365, Pin .912 ( Full Float ) Dome CC -26
Rods Eagle H Beam 6.150
Crank HW 12 Counter Weight, Long Snout Casting 3214723
Rings Total Seal Classic
This assembly was spin balanced with weight added to the crank
Head
Indy Cylinder Head reworked, ported polished with Mopar oversize valves & Springs checked for a .486 lift cam
Rockers (Mopar) Aluminum fully adjustable ( I heard there are no good ?)