Stroked 4.8L
Feb 15, 2004 | 12:54 PM
#32
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From: Americus, GA
Originally Posted by BADMOFO
I was considering the same engine from John Barrett, but it is the older one for use with the 4L80E so I had to pass. Are you running the 4L80E sierrac3?
Feb 15, 2004 | 04:58 PM
#34
Cuz I AM a BADMOFO
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From: Mission to Uranus
I inquired with John Barrett racing engines the first time this motor was on Ebay and didn't reach its reserve. He told me the reserve was $1600 BUT, the crank was for the 4L80E. Maybe the person who answered my email didn't know, but thats what he told me. I ask if he had any for the 4L60E, and he said NOPE! Hope it works out for ya, but I'll be pissed if I missed out! LOL 
Feb 16, 2004 | 01:38 AM
#35
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From: Americus, GA
Ok well my motor is at the shop with my truck so I will have to call and have them check it out.
If I do have the crank that only works with the 4L80E can I simply swap the crank from my other engine? Are there any differences in the blocks? I hope I didn't get screwed here.
What do people do when they upgrade to a 4L80E? Do they have to change cranks also?
If I do have the crank that only works with the 4L80E can I simply swap the crank from my other engine? Are there any differences in the blocks? I hope I didn't get screwed here.
What do people do when they upgrade to a 4L80E? Do they have to change cranks also?
Feb 16, 2004 | 05:10 AM
#36
dont sweat it just yet, so far every motor with aluminim heads is the right crank for the 4l60e and the one they have pictured looks like a flush flange to me.
on the newer style motors they use a crank spacer when mating with an 80 and just leave the spacer out when not mated to a 60
on the newer style motors they use a crank spacer when mating with an 80 and just leave the spacer out when not mated to a 60
Feb 16, 2004 | 06:37 AM
#37
Cuz I AM a BADMOFO
Joined: Apr 2003
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From: Mission to Uranus
Keep us posted. I may get back with Barrett engines and get me one if everything is everything. Like I said, I'm just telling you what they told me when I first bid on that very engine like 2-3 weeks ago, but whomever answered my email may have been confused.
Feb 16, 2004 | 10:10 AM
#38
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From: Albuquerque, NM
Thanks to all those posting info!
Parish8, I went down my current path due to finding a cheap 5.3L motor ( $300 shipped ). I would have loved to do a 6.0L but I am having too much fun with the smaller block so far. It may be on my list of projects but for now the 5.3 to 5.7 conversion is a blast. I am picking up the block today and hope to be going back together soon. I'll keep updating as I progress.
Again, thanks for all the posts and suggestions! Ain't the internet fun, finding all this info out a couple of years ago would have been next to impossible.
Parish8, I went down my current path due to finding a cheap 5.3L motor ( $300 shipped ). I would have loved to do a 6.0L but I am having too much fun with the smaller block so far. It may be on my list of projects but for now the 5.3 to 5.7 conversion is a blast. I am picking up the block today and hope to be going back together soon. I'll keep updating as I progress.
Again, thanks for all the posts and suggestions! Ain't the internet fun, finding all this info out a couple of years ago would have been next to impossible.
Feb 16, 2004 | 10:14 AM
#39
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From: Americus, GA
Well I just talked to the shop and they said the crank is for the 60. 
Man you guys really had me worried. I hope this week or the next the motor will get installed and I can tell you guys how it runs. Then I get to start building my old engine. Thanks again for all the info guys, if nothing else I learned something through all of this.
Man you guys really had me worried. I hope this week or the next the motor will get installed and I can tell you guys how it runs. Then I get to start building my old engine. Thanks again for all the info guys, if nothing else I learned something through all of this.
Feb 16, 2004 | 06:21 PM
#40
On The Tree
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From: BOSSIER CITY LOUISIANA
Originally Posted by Scream
Yeah, but F1 motors rev to like 10-12k rpm...so they need the shorter stroke.
and, there can't be that much less rotating mass. The cranks are the same, the pistons are only marginally smaller, and the rods in the 4.8 are actually longer than in the 5.3, so that would probably make up for the smaller pistons.
and, there can't be that much less rotating mass. The cranks are the same, the pistons are only marginally smaller, and the rods in the 4.8 are actually longer than in the 5.3, so that would probably make up for the smaller pistons.
IF YOU LOOK IN DEALER SPECS SI2000 THE PISTONS ARE THE SAME FOR 02 & 03.