EspaceF1Fan

I've searched and search and these engnies seem mysterious to most people.

Frist questions...That tall intake manifold that comes on it.
What does it fit? What kid of power does it make compared to the the other factory manifolds?
Also what is required to adapt it to other motors if its possible...

Does the crank accept t56 pilot bushings? or does it need machined?
Whats the differences between all the years?
Strengths?
Weaknesses?

5_02ls1

iTrader: (20)

to sum it up anything that will bolt to the ls1 will bolt to the 5.3...the main 2 differences aree the iron block "lm7" and the smaller bore....

nastychevelle

iTrader: (7)

from what ive heard the truck manifold makes more torque and is better than just about every manifold (factory) other than the ls6 which makes more power up top the only problem is people dont have room for them

SOMbitch

iTrader: (8)

^^^^ Badass 67 dude.... I LOVE those cars and would get rid of my 4th gen T/A in a second for one

nastychevelle

iTrader: (7)

haha thanks its my dads theres a thread wit hmore pics on here somewhere i think

adam1803

iTrader: (65)

the intake is tuned for more low end torque, where trucks need it, it runs out of air up top. And yes the crank will accept a t56 pilot bushing without modification.

Shawn MacAnanny

iTrader: (12)

The LS4 5.3s are all aluminum and WILL NOT bolt up to a T56. They do come with 243 heads though which is a shame.

5_02ls1

iTrader: (20)

im pretty sure he is talking truck engines...

djwimbo

O rry? The bolt pattern is different or the mounting flange on the back of the crank is different?

Shawn MacAnanny

iTrader: (12)

The bolt pattern is a 60* buik pattern which is the same pattern as ALOT of V6 engines like the 3800 SC engine, and all the camaro V6s. The T5 5 speed will bolt to them. The problem is that the LS4 block does not have a starter provision on the block. It was made to work with the 4T65E front wheel drive transmisison which has the starter built into the bellhousing. I knows this because i have both sitting in my dining room.

Shawn MacAnanny

iTrader: (12)

Yeah but i saw you mentioned any 5.3L and i didnt want to him to get confused. The LS4 is a 5.3L LSx and its the only one that wont work.

djwimbo

thank you for the info. There are somethings the internet can't teach you, like hands on experience.

LS4 could be a fun swap for the old 3rd Gen's w/ tired 3100's though.

Shawn MacAnanny

iTrader: (12)

Yeah i picked mine up with 12k and the transmission for $499 on ebay. I already knew it wouldnt bolt up but the 243s on top made it just about worth it anyway. I have been reaserching them ALOT and they use the LS2 4x cam sensor and 58x reluctor wheel so the MSD 6012 box will work for a carbed application. The LS6 intake can be swapped with mods to the throttle body (theres a sensor there on 05s) but the Victor jr would never be anywhere near the sensor.

I bought it for a swap in my dune buggy. I'm going to swap the heads to the spare ls1s i have and see if i can get the transmission to work without the ECU and run it carbed with the front wheel drive setup all mounted as RERWD. I've got apost in the conversion section where BRP is going to try to make a bracket. There is room and enough mounting places for it on the passenger side of the block so im sure they will make one.

PETE180

iTrader: (1)

My 5.3L is from a 2004 Isuzu. It's aluminum and came with 9.49 to 1 compression. The chambers were 61cc. They came in the Buick Ranier, Envoy XL, Isuzus and a few others. From what I've read the blocks are identical to the ls6 block with a smaller bore. The books I've read also said that it's still a 99mm sleeve in the bore just not bored out to 99mm. I haven't confirmed this as I did not have an ls1 to mic.

I'm building a 94 Mazda RX7. I'm running a 224-230 114*+4 cam. The heads have been taken down to 59cc's and I'm using a .027 head gasket, 7.350 pushrods. This should put me around 10 to 1. I chose the ls1 intake although not as free flowing as the ls6 with 24 cubes less to feed it should be enough, and it shouldn't starve it up top too much..... That and there is no way of fitting the truck intake iunder the hood of the 7.

The lm7 is identical cept for being an Iron block. The 05-07 L33 again is close, but uses flat top pistons to get their 10 to1 compression and uses 243 heads albeit with smaller non hollow valves like the ls6.....

HTH!

aksz71

iTrader: (9)

these motors which is what is in my truck can also be bored to a 5.7, and yes the starter is through the bellhousing as said above if u want more info on these were just about everyone can tell u about them or anything go to performancetrucks.net ur username and password on here will work over there..

gjohnson

iTrader: (4)

Sorry to highjack your thread but i have some questions along the same line. ok here's my deal I'm lookinf to swap a LSx in my Nissan 240sx with a T56, but I'm trying do keep the costs down. I haven't been able to source a LS1/T56 localy for a good price but i can get a decent deal on a T56. I've also located what I've been told is a L33 with 52k on it for $600 from my local junkyard with a 6 month warranty. I like the idea of the all aluminum L33 for weight savings, my ride is going to be a daily drived with track time possible once or twice a year. Are there any disadvantages going with the cheaper L33 compared to waiting on a LS1? Will it end up costing me more to get the same performance out of the L33 compared to the LS1? I've heard the heads are diffrent between the 2. but is that all? Are the heads interchanageable or would that require more mods. Sorry for all the newbie questions, just trying to get some knowledge and I haven't found this info lurking around or on wikipedia.

aksz71

iTrader: (9)

well as i mentioned in another thread u can bore the 5.3 to and ls1. id go with the 243's for heads if u change these not the ls1's. go the performancetrucks.net more for a 5.3 than on here