4.8 in a Gremlin
Thread Starter
Staging Lane
Joined: May 2012
Posts: 70
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4.8 in a Gremlin Hi guys,
Looking for some basic advice and some starting points for the swap. The 360 I took out of the car had a rear sump set up and oil pan. Is there any factory oil pans for an LS that will give a rear sump set up? I'm not sure what my clearances are going to look like yet, but I would imagine that if it was rear sump on the old AMC v8 that I would need something similar to clear the front cross member.
Looking for some basic advice and some starting points for the swap. The 360 I took out of the car had a rear sump set up and oil pan. Is there any factory oil pans for an LS that will give a rear sump set up? I'm not sure what my clearances are going to look like yet, but I would imagine that if it was rear sump on the old AMC v8 that I would need something similar to clear the front cross member.
Thread Starter
Staging Lane
Joined: May 2012
Posts: 70
Likes: 0
The car was very fun with the 360 in it. However the aftermarket for AMC v8s isnt that great, and there are a lot of AMC guys who think their crap doesnt stink. None the less I had a lot of fun with the AMC power plant, but Im looking for a little more. The car originally dynoed 84hp with the factory 258 straight 6. When I built the 360, it dynoed 230hp. That was a huge change for that car.
Im hoping for double that with a turbo 4.8.
Great to be here, looking forward to learning the ways of the bow tie.
-Justin
Im hoping for double that with a turbo 4.8.
Great to be here, looking forward to learning the ways of the bow tie.
-Justin
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I love the color. Keep it.
I think after sometime around '06 the 4.8/5.3 got slightly better heads, and the newer ones may have a bit more compression. Are you set on a 4.8? the 5.3s are generally just as cheap and make more power to begin with.
I think after sometime around '06 the 4.8/5.3 got slightly better heads, and the newer ones may have a bit more compression. Are you set on a 4.8? the 5.3s are generally just as cheap and make more power to begin with.
Thread Starter
Staging Lane
Joined: May 2012
Posts: 70
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I'm under the impression that the 4.8 is basically a destroked 5.7 5.3 ect. I like the beefier skirts and shorter stroke of the 4.8. What about rod bolts? I dont plan on doing much with the engine, but if I have the pan off to swap it with one that fits, would it be worth throwing some better bolts in there?
Its a destroked 5.3. Same block, same heads. Different rotating assembly.
Do rod bolts. I'd assume a 4.8 will spin higher than a larger engine, and they all seem to have issues with rod bolts. You may want to consider a cam and springs, but it may not be needed with some boost.
http://www.hotrod.com/techarticles/h...g_bang_theory/
Do rod bolts. I'd assume a 4.8 will spin higher than a larger engine, and they all seem to have issues with rod bolts. You may want to consider a cam and springs, but it may not be needed with some boost.
http://www.hotrod.com/techarticles/h...g_bang_theory/
i just finished helping a guy i work with to stuff a 383 sbc and a th400 in a pacer! took it to ocmd for its maiden voyage. custom cowl hood, cal-tracs, and 295/65/15 dr's make for ALOT of fun and a helluva lotta looks from people lol
Staging Lane
Joined: Sep 2008
Posts: 92
Likes: 1
Ls1/amc I'll try to post a pic of my 66 American with an LS1. The AMC engine compartment and crossmember changed very little over the years. Engine fit pretty well with just a little crossmember notching to clear the f-body pan. Car now has homemade k-member with mustang II rack and late mustang coilover struts. Feel free to post or email any questions. bobg401@yahoo.com
