I too have started down a rabbit hole and am glad to see there are others who are thinking along similar lines. This thread has a pretty good sampling of 2F and 3F/FE tech knowledge,.
I think my situation and line of inquiry aligns with the thread title and discussion, but, if after reading my situation and questions, you feel I am hijacking, I will start a new thread.
I read through all of @Dustin Messina's Sniper thread and it is FULL of extremely useful information regarding the Sniper EFI install and tuning etc...
I'll try to be succinct as possible:
TL-DR/BLUF: Is it feasible to install the 3FE head, with Chevy SS valves, on a 1986 2F block, and use the 3FE exhaust manifold and 2F intake manifold with the Sniper EFI (in a 1981 FJ40)? Is it worth the effort, or would I be better off selling the built 3FE head and parts and investing that $$ into installing the Chevy valves in my 2F head and run that?
Background details:
My FJ40 spends the vast majority of its time being trailered to events and crawling East Coast off road park trails (2F with 6 into 1 headers, exhaust run inside the frame rails, SOA, 37" tires on beadlocks, H41+Orion 4:1, 4.56 gears, FF rear with ARB lockers front and rear), but I also like to drive it around town, and on the high way at 70 MPH.
I was planning on installing a 2FE into my 40 and I have a 2F block on a stand that I plan to have refreshed/ machined and all the 3FE fixin's to build a 2FE; However, based on my latest research, I am now pretty solidly set on the Sniper kit from @FJ60Cam.
My 3FE head already has the Chevy valves installed and is ready to go.
I would have a machine shop go through the 1986 2F block, crank, and cam, and hone/machine where necessary and possibly install a different duration cam, if it would be worth the expense to noticeably improve trail and street performance.
I'd prefer to continue to run Regular octane fuel.
I understand the 3Fe head is about 2.5" shorter than the 2F head, which could actually help in matching the air filter assembly to the FI assembly.
If this is not on topic, let me know.
Cheers,
Stump
I think my situation and line of inquiry aligns with the thread title and discussion, but, if after reading my situation and questions, you feel I am hijacking, I will start a new thread.
I read through all of @Dustin Messina's Sniper thread and it is FULL of extremely useful information regarding the Sniper EFI install and tuning etc...
I'll try to be succinct as possible:
TL-DR/BLUF: Is it feasible to install the 3FE head, with Chevy SS valves, on a 1986 2F block, and use the 3FE exhaust manifold and 2F intake manifold with the Sniper EFI (in a 1981 FJ40)? Is it worth the effort, or would I be better off selling the built 3FE head and parts and investing that $$ into installing the Chevy valves in my 2F head and run that?
Background details:
My FJ40 spends the vast majority of its time being trailered to events and crawling East Coast off road park trails (2F with 6 into 1 headers, exhaust run inside the frame rails, SOA, 37" tires on beadlocks, H41+Orion 4:1, 4.56 gears, FF rear with ARB lockers front and rear), but I also like to drive it around town, and on the high way at 70 MPH.
I was planning on installing a 2FE into my 40 and I have a 2F block on a stand that I plan to have refreshed/ machined and all the 3FE fixin's to build a 2FE; However, based on my latest research, I am now pretty solidly set on the Sniper kit from @FJ60Cam.
My 3FE head already has the Chevy valves installed and is ready to go.
I would have a machine shop go through the 1986 2F block, crank, and cam, and hone/machine where necessary and possibly install a different duration cam, if it would be worth the expense to noticeably improve trail and street performance.
I'd prefer to continue to run Regular octane fuel.
I understand the 3Fe head is about 2.5" shorter than the 2F head, which could actually help in matching the air filter assembly to the FI assembly.
If this is not on topic, let me know.
Cheers,
Stump
