l48 engine rebuild
Thread Starter
Advanced
Joined: Jan 2010
Posts: 69
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From: Chesterland Ohio
l48 engine rebuild
Hi just thought I would shoot this out. I just rebuilt my L48 350 I will list the new parts
Lunati voodoo cam and lifters
new main and rod bearings
new Edlebrock performer intake
new push rods
new roller rockers
new hydrolic lifters
new valve seals new regrind
new brass valve guides
new roller timing chain and gears
had quadrajet rebuilt
new rings
My main problem now that the engine is in it won't fire. I tried the first time and backfired so I checked timing and fixed that. now it turns over but seems not to want to fire at all. any help will be appreciated.
Lunati voodoo cam and lifters
new main and rod bearings
new Edlebrock performer intake
new push rods
new roller rockers
new hydrolic lifters
new valve seals new regrind
new brass valve guides
new roller timing chain and gears
had quadrajet rebuilt
new rings
My main problem now that the engine is in it won't fire. I tried the first time and backfired so I checked timing and fixed that. now it turns over but seems not to want to fire at all. any help will be appreciated.
Le Mans Master
Joined: Sep 2001
Posts: 7,739
Likes: 630
From: Unreconstructed, South Carolina
In my neck of the woods ... that's not so much a rebuild ... more of a rering&bearing job ... w/ intake, cam & rockers.
No pistons listed ... implies same old L48 LOW compression ~ 8:1 ... hope that voodoo ain't too much cam for low comp.
also check if valves-lifters set too tight; holding valves open.
No pistons listed ... implies same old L48 LOW compression ~ 8:1 ... hope that voodoo ain't too much cam for low comp.
also check if valves-lifters set too tight; holding valves open.
Instructor
Joined: May 2009
Posts: 125
Likes: 0
From: tacoma wa
to the basics
check spark. full power to dist., also crank with plug out to see spark.
check timing, this should include valve adjustments
check fuel, be careful no car-b-q's
would guess you already did this but i know how it can be in the moment those little details will get ya.
good luck
check spark. full power to dist., also crank with plug out to see spark.
check timing, this should include valve adjustments
check fuel, be careful no car-b-q's
would guess you already did this but i know how it can be in the moment those little details will get ya.
good luck
Thread Starter
Advanced
Joined: Jan 2010
Posts: 69
Likes: 0
From: Chesterland Ohio
Thanks to all for your help. I did line the dots on the gears for initial set up. The rockers are full roller and I followed per their instructions to A "t". By the way just because you don't put new pistons in dose not mean it isn't rebuilt. the lunati cam I am using is the 60103 with lift at the valve of .489 intake and .504 exhaust rocker ratio is 1.5 in and ex the new lifters valve springs retainers and valve locks installed height 1.750 equaling 108 lbs. I'm wondering if the straight up timing is wrong for this cam set up. meaning line up mark and 1 cylinder. any ideas?
Walt
a Vet with a Vet
Walt
a Vet with a Vet
Thread Starter
Advanced
Joined: Jan 2010
Posts: 69
Likes: 0
From: Chesterland Ohio
l48 engine rebuild
Thanks to all for your help. I did line the dots on the gears for initial set up. The rockers are full roller and I followed per their instructions to A "t". By the way just because you don't put new pistons in dose not mean it isn't rebuilt. the lunati cam I am using is the 60103 with lift at the valve of .489 intake and .504 exhaust rocker ratio is 1.5 in and ex the new lifters valve springs retainers and valve locks installed height 1.750 equaling 108 lbs. I'm wondering if the straight up timing is wrong for this cam set up. meaning line up mark and 1 cylinder. any ideas?
Walt
a Vet with a Vet
Walt
a Vet with a Vet
Instructor
Joined: May 2009
Posts: 125
Likes: 0
From: tacoma wa
ya i think number 6 should be firing with the marks aligned closest together. may want to double check me. do a search on this forum they got me on the money with a fuzzy fealing when i did mine. then i fired it and got butter fly's... ran great first fire.
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