Tune or no tune?? Help!!!
#1
Junior Member
Thread Starter
Join Date: Aug 2014
Location: Ridgway pa
Posts: 64
Likes: 0
Received 0 Likes
on
0 Posts
Year: 2000
Model: Cherokee
Engine: 4.0
Tune or no tune?? Help!!!
So I got a 2000 xj. Im buying a new long block. The company I'm getting it from offers aftermarket cams. I was thinking about getting a mild one a little bigger then stock. But I don't know if I need a tune or not... anyone got an ideas on this matter?
#4
Seasoned Member
tune? like a programmer?
the 4.0 can handle a mild cam no problem. don't even need stiffer valve springs until you get into big lift/duration cams. I'd definitely work on air flow to take advantage of that cam though. intake/exhaust for sure
the 4.0 can handle a mild cam no problem. don't even need stiffer valve springs until you get into big lift/duration cams. I'd definitely work on air flow to take advantage of that cam though. intake/exhaust for sure
#5
Junior Member
Thread Starter
Join Date: Aug 2014
Location: Ridgway pa
Posts: 64
Likes: 0
Received 0 Likes
on
0 Posts
Year: 2000
Model: Cherokee
Engine: 4.0
Well funny thing. Rep just called me back after three weeks. He said the same thing. Haha.
#6
Junior Member
Thread Starter
Join Date: Aug 2014
Location: Ridgway pa
Posts: 64
Likes: 0
Received 0 Likes
on
0 Posts
Year: 2000
Model: Cherokee
Engine: 4.0
I also have the Thor cowl induction intake already. Do you think that's enough for the intake side of things?
#7
::CF Moderator::
Join Date: Aug 2011
Location: Prescott, Az
Posts: 43,863
Received 1,524 Likes
on
1,236 Posts
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Trending Topics
#8
Seasoned Member
yep, that should do it. throttle body spacer would be the only other thing on the intake side you could do. you'll fine mixed reviews on whether or not it will help. When you start opening things up, its definitely a restrictive point.
#10
Seasoned Member
#11
::CF Administrator::
Still, spacers do NOTHING. Waste of money and time.
OP FWIW, I have a 4.6 stroker, specs as follows:
Bored 30 Over
4.2 Crank
4.2 Connecting rods
Melling High Volume Oil Pump
.020 King main bearings
.010 King Connecting Rod Bearings
.030 Silvolite Pistons
.030 Hastings Piston Rings
King Cam Bearings
Elgin Performance Cam
Johnson Hydraulic Lifters
Engine Pro Timing Chain set
Fresh Head with new valves and valve springs
All new gaskets (No oil Leaks).
Venom 25 LB fuel injectors
Gibson Stainless steel ceramic coated header
I have done nothing to the computer and no issues.
OP FWIW, I have a 4.6 stroker, specs as follows:
Bored 30 Over
4.2 Crank
4.2 Connecting rods
Melling High Volume Oil Pump
.020 King main bearings
.010 King Connecting Rod Bearings
.030 Silvolite Pistons
.030 Hastings Piston Rings
King Cam Bearings
Elgin Performance Cam
Johnson Hydraulic Lifters
Engine Pro Timing Chain set
Fresh Head with new valves and valve springs
All new gaskets (No oil Leaks).
Venom 25 LB fuel injectors
Gibson Stainless steel ceramic coated header
I have done nothing to the computer and no issues.
#14
CF Veteran
Join Date: Jul 2011
Location: Warren, Pa
Posts: 2,164
Likes: 0
Received 1 Like
on
1 Post
Year: 97
Model: Cherokee
Engine: 4.0L
Still, spacers do NOTHING. Waste of money and time.
OP FWIW, I have a 4.6 stroker, specs as follows:
Bored 30 Over
4.2 Crank
4.2 Connecting rods
Melling High Volume Oil Pump
.020 King main bearings
.010 King Connecting Rod Bearings
.030 Silvolite Pistons
.030 Hastings Piston Rings
King Cam Bearings
Elgin Performance Cam
Johnson Hydraulic Lifters
Engine Pro Timing Chain set
Fresh Head with new valves and valve springs
All new gaskets (No oil Leaks).
Venom 25 LB fuel injectors
Gibson Stainless steel ceramic coated header
I have done nothing to the computer and no issues.
OP FWIW, I have a 4.6 stroker, specs as follows:
Bored 30 Over
4.2 Crank
4.2 Connecting rods
Melling High Volume Oil Pump
.020 King main bearings
.010 King Connecting Rod Bearings
.030 Silvolite Pistons
.030 Hastings Piston Rings
King Cam Bearings
Elgin Performance Cam
Johnson Hydraulic Lifters
Engine Pro Timing Chain set
Fresh Head with new valves and valve springs
All new gaskets (No oil Leaks).
Venom 25 LB fuel injectors
Gibson Stainless steel ceramic coated header
I have done nothing to the computer and no issues.