Mid-Buck/Modified 4.6 carb build
Posted: November 2nd, 2013, 6:43 am
Been a long time lurker and finally started my build. Been collecting parts for a while, and finally took everything to the machine shop last week, so thought I would make a build thread. I'm calling this a mid-buck build since I've already spent too much money to call this a 'low-buck' variant, lol. But other than using the longer rods, and IC944 pistons, it's basically a stockish type build. Looking to get in the 250-260 HP range, but even the low end of that is better than what I currently have...which is probably LOW 100's, if that!!
Its going in an 88 YJ, currently 4.2L with a BA10 craptastic tranny. Sticking with a carb for simplicity...my wiring harness is a rat's nest (previous owner hacked it up) and I cant imagine trying to splice the computer into this mess. Once the engine is in and drivable, I am planning to rewire the whole thing. One major project at time!
The build:
(will add parts as they are purchased)
complete 4.0l - $500 (Craigslist)
Scat 4.2 crank, 9-4.2L-3898 - $560 (Hesco)
Aluminum pistons, IC944-030 - $511 (Summit)
Holley 470 Truck Avenger, 0-90470 - $410 (Summit)
Clifford 4bl intake, 08-1014 - $320 (Clifford)
Chrysler 229 'Purple' cam, 4529229AC - $173 (Monicatti)
SS intake/exhaust valves, P5249875 int/P5249880 exh - $112/$97 (Monicatti)
Stock springs/retainers/locks, P4529215/P4529217/P4529218 - $82/$82/$24 (Monicatti)
Rocker arm kit, HES7699RA - $150 (Hesco)
ARP main/head/rod bolts, 146-5001/146-3601/146-6001 - $50/$62/$90 (Summit)
HEI dizzy, SUM-850047 - $150 (Summit)
exhaust - cant decide yet, but leaning towards JBA
Other sorta-kinda-related items to the build (trans and TC):
AX15 (swap from BA10) - Craigslist ($400)
AX15 master rebuild kit - Southwest Gear
NP231 master rebuild kit - Southwest Gear
NP231 big chain kit - JB conversions
NP231 6 gear planetary set - JB conversions
Everything else is basically stock parts...mostly from O'Reilly Auto Parts. I'm doing most of the work myself, including porting/polishing the head and polishing the rods. On the head, I'm really just cleaning it up...smoothing out the intake, polishing the exhaust ports, and matching the intake manifold runners to the intake ports (port matching, not gasket matching).
Machine work is being done by a local machine shop, Mark G's Machine, in central Texas. First time using this shop, but he comes highly recommended...and Mark, so far, has really impressed me.
Picture Time!
(sorry for the quality on some of these)
'Complete' 4.0
The big man (my son) taking it apart
Crank
Pistons
Hesco Rockers (profiled and shot peened...these look really nice in person)
Holley
Clifford Intake
DUI Dizzy
Polished Rods
AX15 with cases removed
AX15 major components
Its going in an 88 YJ, currently 4.2L with a BA10 craptastic tranny. Sticking with a carb for simplicity...my wiring harness is a rat's nest (previous owner hacked it up) and I cant imagine trying to splice the computer into this mess. Once the engine is in and drivable, I am planning to rewire the whole thing. One major project at time!
The build:
(will add parts as they are purchased)
complete 4.0l - $500 (Craigslist)
Scat 4.2 crank, 9-4.2L-3898 - $560 (Hesco)
Aluminum pistons, IC944-030 - $511 (Summit)
Holley 470 Truck Avenger, 0-90470 - $410 (Summit)
Clifford 4bl intake, 08-1014 - $320 (Clifford)
Chrysler 229 'Purple' cam, 4529229AC - $173 (Monicatti)
SS intake/exhaust valves, P5249875 int/P5249880 exh - $112/$97 (Monicatti)
Stock springs/retainers/locks, P4529215/P4529217/P4529218 - $82/$82/$24 (Monicatti)
Rocker arm kit, HES7699RA - $150 (Hesco)
ARP main/head/rod bolts, 146-5001/146-3601/146-6001 - $50/$62/$90 (Summit)
HEI dizzy, SUM-850047 - $150 (Summit)
exhaust - cant decide yet, but leaning towards JBA
Other sorta-kinda-related items to the build (trans and TC):
AX15 (swap from BA10) - Craigslist ($400)
AX15 master rebuild kit - Southwest Gear
NP231 master rebuild kit - Southwest Gear
NP231 big chain kit - JB conversions
NP231 6 gear planetary set - JB conversions
Everything else is basically stock parts...mostly from O'Reilly Auto Parts. I'm doing most of the work myself, including porting/polishing the head and polishing the rods. On the head, I'm really just cleaning it up...smoothing out the intake, polishing the exhaust ports, and matching the intake manifold runners to the intake ports (port matching, not gasket matching).
Machine work is being done by a local machine shop, Mark G's Machine, in central Texas. First time using this shop, but he comes highly recommended...and Mark, so far, has really impressed me.
Picture Time!
(sorry for the quality on some of these)
'Complete' 4.0
The big man (my son) taking it apart
Crank
Pistons
Hesco Rockers (profiled and shot peened...these look really nice in person)
Holley
Clifford Intake
DUI Dizzy
Polished Rods
AX15 with cases removed
AX15 major components