Need to find someone that knows small-block chevys Gen III - Toyota Yaris Forums

Slick · 10-10-2009, 09:06 PM

Hey everyone, I am in search of someone who knows about the Gen. III LM7 (5.3L) or at least the small block chevy line. I am looking for someone with some experience in small block performance. I plan on coverting, what parts I can, LS6 parts to my LM7 engine; with my eventual plan of a twin turbo or two stage turbo set up.

Anyway, thanks for any responses :) BTW, I realize this is a Micro forum, but you never know someones background until you ask :)

Thanks in advance.

lilredrocket · 10-11-2009, 12:27 AM

Put a match in the tank!!! Haha.......(need help?).........j/k................maybe

Good luck with the truck bud

yaris-me · 10-11-2009, 02:26 AM

LS6 is not a small block.

coheed · 10-11-2009, 07:45 AM

Depends on which LS6 your talking about. Because that stamp was on 2 engines with different displacements; a 454 and a 5.7. The 5.7 is just a higher output version of a LS1. As for interchangeable parts.... not to knowledgeable about those. Sorry.

yaris-me · 10-11-2009, 11:53 PM

Quote:

Originally Posted by coheed

Depends on which LS6 your talking about. Because that stamp was on 2 engines with different displacements; a 454 and a 5.7. The 5.7 is just a higher output version of a LS1. As for interchangeable parts.... not to knowledgeable about those. Sorry.

I'm corrected. Thank you. Off hand, I would say that it's a bad idea. The LS6 is a high performance engine with a different displacement. I can think of one good reason. The LS6 cam would have a higher lift and the pistons would have to be notched or shaped to allow valve clearance.

coheed · 10-12-2009, 03:17 AM

Quote:

Originally Posted by yaris-me

I'm corrected. Thank you. Off hand, I would say that it's a bad idea. The LS6 is a high performance engine with a different displacement. I can think of one good reason. The LS6 cam would have a higher lift and the pistons would have to be notched or shaped to allow valve clearance.

Not a problem man, no worries. Honestly I think it would just be easier to buy aftermarket performance parts for the LM7, but thats my take on it.

Looking at a few things it seems that the intake manifold is interchangeable, along with the cams. But if you change the cams you may want to see if you can find pistons that have correct dimples in them or are short enough to clear the valves. It also seems that most ls headers are interchangeable as long as they clear the inner fender and the firewall. The heads also swap over, which will give you a lower compression ratio, which in turn is good for boost.

Slick · 10-12-2009, 12:12 PM

Quote:

Originally Posted by coheed

The heads also swap over, which will give you a lower compression ratio, which in turn is good for boost.

ding ding. That's what I wanted to hear :)

coheed · 10-12-2009, 08:54 PM

Research is a good friend. I found all that on google books. The book said that if you swap LM7 heads on a LS1 it will raise the compression so the opposite must be true because the LS1 heads have a bigger combustion chamber.

10-10-2009, 09:06 PM	#1
Slick View User's Garage Drives: '09 3-Dr Join Date: Apr 2009 Location: Houston, Texas Posts: 616	Need to find someone that knows small-block chevys Gen III Hey everyone, I am in search of someone who knows about the Gen. III LM7 (5.3L) or at least the small block chevy line. I am looking for someone with some experience in small block performance. I plan on coverting, what parts I can, LS6 parts to my LM7 engine; with my eventual plan of a twin turbo or two stage turbo set up. Anyway, thanks for any responses :) BTW, I realize this is a Micro forum, but you never know someones background until you ask :) Thanks in advance. __________________ In a world... where things squeak, wont fit,start to bleed, or are just plain hard to do.... ArmorAll will fix that

10-11-2009, 12:27 AM	#2
lilredrocket Slowy getting there View User's Garage Drives: 08 Liftback Join Date: Nov 2008 Location: DFW, Texas Posts: 1,464	Put a match in the tank!!! Haha.......(need help?).........j/k................maybe Good luck with the truck bud __________________

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10-12-2009, 08:54 PM	#8
coheed Drives: 08 BB LB Join Date: Dec 2008 Location: Maiden, NC Posts: 785	Research is a good friend. I found all that on google books. The book said that if you swap LM7 heads on a LS1 it will raise the compression so the opposite must be true because the LS1 heads have a bigger combustion chamber.