cam swap gone bad.
Thread Starter
Teching In
Joined: Mar 2017
Posts: 9
Likes: 1
cam swap gone bad. hopefully this is the right section.
i have a 1970 monte carlo that i swapped a 2004 lm7 into that i pulled from a junkyard. swapped the intake and throttle body from a 2000 for drive by cable. modified factory harness from 2004 to that setup because i wanted the ev6 injectors. got a mail order tune and delete and everything ran flawless.
year later won a truck norris stage 2 cam in a raffle with accompanying springs and lifters. had the same guy do another mail order tune for that setup with a plan to go get an actual tune after it was fired up.
did the swap, used dowel rods and did not change the oil pump. starts after a couple tries every time. fuel pressure good, oil on my dakota gauge says 50psi at idle. However, number 7 header is cold, and when i pulled the valve cover it is getting a very small amount of oil (like scary small) for about 2 minutes and then it gets slightly better but not enough for me.
i pulled the rocker/spring/lifter assembly and everything looks good. injector is working and there was a couple times through trial and error where #7 did heat up but now it wont seem to replicate that. my problem is i dont want to run the car to diagnose and im confident that i didn't knick that oring on the oil pickup tube.
so im stuck, is it my junkyard mouse chewed wiring harness? did i gack something up when i slipped the cam in? is it my mail order tune? i guess im avoiding pulling the motor back apart and i dont want to just throw parts at it.
hoping someone here has had a similar experience or help in diagnosing with the wealth of knowledge that is available.
i really appreciate anyone who reads this far and offers any advice.
thank you
i have a 1970 monte carlo that i swapped a 2004 lm7 into that i pulled from a junkyard. swapped the intake and throttle body from a 2000 for drive by cable. modified factory harness from 2004 to that setup because i wanted the ev6 injectors. got a mail order tune and delete and everything ran flawless.
year later won a truck norris stage 2 cam in a raffle with accompanying springs and lifters. had the same guy do another mail order tune for that setup with a plan to go get an actual tune after it was fired up.
did the swap, used dowel rods and did not change the oil pump. starts after a couple tries every time. fuel pressure good, oil on my dakota gauge says 50psi at idle. However, number 7 header is cold, and when i pulled the valve cover it is getting a very small amount of oil (like scary small) for about 2 minutes and then it gets slightly better but not enough for me.
i pulled the rocker/spring/lifter assembly and everything looks good. injector is working and there was a couple times through trial and error where #7 did heat up but now it wont seem to replicate that. my problem is i dont want to run the car to diagnose and im confident that i didn't knick that oring on the oil pickup tube.
so im stuck, is it my junkyard mouse chewed wiring harness? did i gack something up when i slipped the cam in? is it my mail order tune? i guess im avoiding pulling the motor back apart and i dont want to just throw parts at it.
hoping someone here has had a similar experience or help in diagnosing with the wealth of knowledge that is available.
i really appreciate anyone who reads this far and offers any advice.
thank you
hopefully this is the right section.
i have a 1970 monte carlo that i swapped a 2004 lm7 into that i pulled from a junkyard. swapped the intake and throttle body from a 2000 for drive by cable. modified factory harness from 2004 to that setup because i wanted the ev6 injectors. got a mail order tune and delete and everything ran flawless.
year later won a truck norris stage 2 cam in a raffle with accompanying springs and lifters. had the same guy do another mail order tune for that setup with a plan to go get an actual tune after it was fired up.
did the swap, used dowel rods and did not change the oil pump. starts after a couple tries every time. fuel pressure good, oil on my dakota gauge says 50psi at idle. However, number 7 header is cold, and when i pulled the valve cover it is getting a very small amount of oil (like scary small) for about 2 minutes and then it gets slightly better but not enough for me.
i pulled the rocker/spring/lifter assembly and everything looks good. injector is working and there was a couple times through trial and error where #7 did heat up but now it wont seem to replicate that. my problem is i dont want to run the car to diagnose and im confident that i didn't knick that oring on the oil pickup tube.
so im stuck, is it my junkyard mouse chewed wiring harness? did i gack something up when i slipped the cam in? is it my mail order tune? i guess im avoiding pulling the motor back apart and i dont want to just throw parts at it.
hoping someone here has had a similar experience or help in diagnosing with the wealth of knowledge that is available.
i really appreciate anyone who reads this far and offers any advice.
thank you
i have a 1970 monte carlo that i swapped a 2004 lm7 into that i pulled from a junkyard. swapped the intake and throttle body from a 2000 for drive by cable. modified factory harness from 2004 to that setup because i wanted the ev6 injectors. got a mail order tune and delete and everything ran flawless.
year later won a truck norris stage 2 cam in a raffle with accompanying springs and lifters. had the same guy do another mail order tune for that setup with a plan to go get an actual tune after it was fired up.
did the swap, used dowel rods and did not change the oil pump. starts after a couple tries every time. fuel pressure good, oil on my dakota gauge says 50psi at idle. However, number 7 header is cold, and when i pulled the valve cover it is getting a very small amount of oil (like scary small) for about 2 minutes and then it gets slightly better but not enough for me.
i pulled the rocker/spring/lifter assembly and everything looks good. injector is working and there was a couple times through trial and error where #7 did heat up but now it wont seem to replicate that. my problem is i dont want to run the car to diagnose and im confident that i didn't knick that oring on the oil pickup tube.
so im stuck, is it my junkyard mouse chewed wiring harness? did i gack something up when i slipped the cam in? is it my mail order tune? i guess im avoiding pulling the motor back apart and i dont want to just throw parts at it.
hoping someone here has had a similar experience or help in diagnosing with the wealth of knowledge that is available.
i really appreciate anyone who reads this far and offers any advice.
thank you
TECH Resident
Joined: Jun 2011
Posts: 936
Likes: 472
There's no such thing as a Truck Norris Stage 2. BTR has a Truck Stage 2 and a Truck Norris. Are you sure the camshaft kit you won is legit? Not trying to be funny... there's a lot of knock off cam kits these days, and they're garbage.
12 Second Club
Joined: Dec 2017
Posts: 1,033
Likes: 221
From: San Antonio
Check the spark plug wire going to #7. It might have fallen off the plug or the coil. Mine did this recently. That #7 plug is a ***** to reach in a car. I finally bought some super-long (about 2ft) needle-nose pliers just to reach the #7 plug/wire.
TECH Regular
Joined: May 2023
Posts: 418
Likes: 139
From: Franconia, PA
this. Check the wire and spark plug if wire is fine
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
