383 stroker install
02-06-2016, 07:10 PM
#1
383 stroker install thought i'd share this from ls1gto. it's just a copy / paste on
my thread over there... questions, comments, and smart ***
comments welcome.
so a few months ago, i started getting a random "knock" of some sort. figured it was a combination
of using ls7 lifters on a big cam, along with the mileage on the stock block ( 124k when we did the
cam top end rebuild, 180k upon tear down ). original plan was to replace the lifters with a set of
morel 5315's, remeasure for pr length, then back together. so...got the car to the shop for the
initial tear down.
as we pulled out the lifters, i started looking at them, and found this...
pulled the cam, and found this...
my thread over there... questions, comments, and smart ***
comments welcome.
so a few months ago, i started getting a random "knock" of some sort. figured it was a combination
of using ls7 lifters on a big cam, along with the mileage on the stock block ( 124k when we did the
cam top end rebuild, 180k upon tear down ). original plan was to replace the lifters with a set of
morel 5315's, remeasure for pr length, then back together. so...got the car to the shop for the
initial tear down.
as we pulled out the lifters, i started looking at them, and found this...
pulled the cam, and found this...
02-06-2016, 07:11 PM
#3
so.....mulled it over on what to do..
option 1 - slap a new cam / bearings / lifters in and sell it
option 2- new short block
since 04 qsm's are dropping like flies, i decided to short block
it.
so, engine / trans pull began.
got the new 383 stroker block with callies crank, wiseco pistons, and ms4 cam ( along with the new morel 5315's ).
all arp studded bottom end.
option 1 - slap a new cam / bearings / lifters in and sell it
option 2- new short block
since 04 qsm's are dropping like flies, i decided to short block
it.
so, engine / trans pull began.
got the new 383 stroker block with callies crank, wiseco pistons, and ms4 cam ( along with the new morel 5315's ).
all arp studded bottom end.
02-06-2016, 07:13 PM
#6
had to do some serious clean up on the parts that were swapped over. if i had the time, i would have
bought a new oil pan, windage tray, and other hard parts, but unfortunately i didn't.
so, did the clean up on the parts washer as best as i could, and began putting them on the new short
block.
windage tray had to be spaced out.
oil pump, pick up tube, and tray back on.
oil pan on...
new bump stick ! texas speed now does in house grinding, so no more bad comp cam blanks ( which is part of what
happened on my failure ).
timing set back on...
front cover done...
udp on...
bought a new oil pan, windage tray, and other hard parts, but unfortunately i didn't.
so, did the clean up on the parts washer as best as i could, and began putting them on the new short
block.
windage tray had to be spaced out.
oil pump, pick up tube, and tray back on.
oil pan on...
new bump stick ! texas speed now does in house grinding, so no more bad comp cam blanks ( which is part of what
happened on my failure ).
timing set back on...
front cover done...
udp on...
02-06-2016, 07:13 PM
#7
moving to the top end... cleaned the heads up as best we could, and installed the new morel lifters
and head gaskets.
morel 5315's...
heads on...
measured for push rods and came up with 7.35's. got those installed, and the rockers back on.
all in, and ready to be stabbed !
and head gaskets.
morel 5315's...
heads on...
measured for push rods and came up with 7.35's. got those installed, and the rockers back on.
all in, and ready to be stabbed !
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02-08-2016, 10:30 AM
#11
we got it back together - had zero issues.
yes, the 241 heads on it are a replica of the ai 219cc heads you can get.
had a guy in houston do the work to those specs. they are not milled.
02-09-2016, 08:00 AM
#13
you know it does have some chop, but not as bad as you'd think. i'll post
a vid up here in the next few days
mid level torque is the biggest
improvement so far that i can tell by the butt dyno. the stock motor and
ms3 cam was horrible under 2k. this thing eats from 2k on up.
a vid up here in the next few days
mid level torque is the biggest improvement so far that i can tell by the butt dyno. the stock motor and
ms3 cam was horrible under 2k. this thing eats from 2k on up.
02-09-2016, 08:54 AM
#16
oh hell yes. we were so glad we could do that on a stand. when we took the tube out,
of course the old o ring was pinched. it wasn't in the way of the pick up flow, but it
was more than likely aerating the oil as it was going through the pump, so that may
have caused a small amount of starvation issues. also had a pretty bad oil pan leak due
to us breaking the pan loose on the 1st go around, and it never did seal back up good.
but yeah... doing it this time was an absolute breeze.
of course the old o ring was pinched. it wasn't in the way of the pick up flow, but it
was more than likely aerating the oil as it was going through the pump, so that may
have caused a small amount of starvation issues. also had a pretty bad oil pan leak due
to us breaking the pan loose on the 1st go around, and it never did seal back up good.
but yeah... doing it this time was an absolute breeze.
02-23-2016, 11:04 AM
#20
well the fuel pump that had 188k miles on it wouldn't hold pressure
above 460hp @ 6500rpm, so have a dw65 pump in route. will be
here tomorrow, install on sunday, and back in dyno for completion
monday...
never had a fuel pump issue with prevoius build, 440/400. always
held 60lbs, and only dropped 1lb during wot. oh well... straub
trunions will go in at the same time.
above 460hp @ 6500rpm, so have a dw65 pump in route. will be
here tomorrow, install on sunday, and back in dyno for completion
monday...
never had a fuel pump issue with prevoius build, 440/400. always
held 60lbs, and only dropped 1lb during wot. oh well... straub
trunions will go in at the same time.
Last edited by elephantrider; 02-23-2016 at 01:44 PM.