1986 s10 blazer ls1 swap problems help

blazingrip · 10-14-2007, 02:59 PM

So we have the ls1 in and we are having a few problems. We found out for sure that I am going to have to switch the alternator and power steering mounts to the vette mount because the camaro mounts will not work. We switched the oil pan to a truck 5.3 oil pan in hopes of not having to notch the frame as much, but even after we have notched the frame with what we thought would work it appears to still not fit. Now we didn't bang back the firewall but I didn't think we would have to. Has anyone had to bang back the firewall to get the ls1 oil pan to fit? Another thing is we are going to have to notch the frame considerably where the ac compressor interferes but I kind of expected that. Yet another problem is that the drivers side exhaust manifold won't fit in because of the steering column. I am wondering if between moving the steering column to the drivers side as much as possible and moving the engine to the passenger side an 1" or so, if it's going to be enough to fit the exhaust manifold. I am not using headers because I live in Ca. and want to pass the referee inspection. I guess I could also switch to a smaller steering u joint and set up but I need some help from others opinions please help!?!

p.s. I do have the swap book from jtr which doesn't really help with the ls1 swap at all and I also have the ls1 swap book from ls1blazer but it's all on a newer truck and a lot of it doesn't seem to be the same.

**m8w6r77** · 10-14-2007, 08:34 PM

ok you will have to notch the cross memeber in order to get the truck pan fit. i used the ls2 oil pan. there is very little notching on the top of the cross member with that pan. as far as the mainfolds. they should fit. what mounts are you using? there is another option. the pans is like 500 and some from turbo time.with no cutting. the a/c accessories. there is a kit you can get to move the a/c up top so you do not have cut the frame also,

blazingrip · 10-14-2007, 08:58 PM

Well the cross member is notched as much as we felt comfortable with but it still didn't seem to be enough. I am using the stealth mounts from jtr. I only have about 1 1/2" space between the drivers side exhaust port and the steering shaft so I'm not sure how I am going to get it to work. thanks for the post

**m8w6r77** · 10-15-2007, 11:21 AM

i think it is a 2x10inch notch they you have to take out with mod truck pan.

check this out.

http://www.s10forum.com/forum/f213/p...x-swap-283608/

PPI Typhoon · 10-24-2007, 11:39 AM

Quote:

Originally Posted by m8w6r77

ok you will have to notch the cross memeber in order to get the truck pan fit. i used the ls2 oil pan. there is very little notching on the top of the cross member with that pan. as far as the mainfolds. they should fit. what mounts are you using? there is another option. the pans is like 500 and some from turbo time.with no cutting. the a/c accessories. there is a kit you can get to move the a/c up top so you do not have cut the frame also,

I have both the motor mounts and oilpan from TurboTime.

I'm also planning on the high mount A/C.

You can see the parts in this pic:

Here are the dimensions of the pan:

From what I understand, the measurements are showing that it will clear 2WD crossmembers, but I'm not 100% sure as I have yet to see anyone try it.

**6SpeedBlazer** · 10-24-2007, 04:08 PM

did you move the steering shaft?

the 88.5 and older models have a differnt steering colum location then the 88.5 and up

10-14-2007, 02:59 PM	#1
blazingrip LS1/9 inch curry rear end Join Date: Sep 2004 Location: Los Angeles, CA. Posts: 39 Ride: 1986 chevy s10 blazer Seller Rating: (0)	1986 s10 blazer ls1 swap problems help So we have the ls1 in and we are having a few problems. We found out for sure that I am going to have to switch the alternator and power steering mounts to the vette mount because the camaro mounts will not work. We switched the oil pan to a truck 5.3 oil pan in hopes of not having to notch the frame as much, but even after we have notched the frame with what we thought would work it appears to still not fit. Now we didn't bang back the firewall but I didn't think we would have to. Has anyone had to bang back the firewall to get the ls1 oil pan to fit? Another thing is we are going to have to notch the frame considerably where the ac compressor interferes but I kind of expected that. Yet another problem is that the drivers side exhaust manifold won't fit in because of the steering column. I am wondering if between moving the steering column to the drivers side as much as possible and moving the engine to the passenger side an 1" or so, if it's going to be enough to fit the exhaust manifold. I am not using headers because I live in Ca. and want to pass the referee inspection. I guess I could also switch to a smaller steering u joint and set up but I need some help from others opinions please help!?! p.s. I do have the swap book from jtr which doesn't really help with the ls1 swap at all and I also have the ls1 swap book from ls1blazer but it's all on a newer truck and a lot of it doesn't seem to be the same.

10-24-2007, 04:08 PM	#6
6SpeedBlazer Blazin Low Supporter Zombie Killer Join Date: May 2004 Location: st. louis Posts: 6,185 Ride: 89 blazer Seller Rating: (1)	did you move the steering shaft? the 88.5 and older models have a differnt steering colum location then the 88.5 and up __________________ -mark 89 s10 blazer 4.3L T56 89 s10 blazer 5.7L T56 89 s10 blazer 4.3L T56 89 s10 blazer 5.7L T56

Thread Tools
Show Printable Version Email this Page
Display Modes	Rate This Thread
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode	Rate This Thread:

10-14-2007, 08:34 PM	#2
m8w6r77 Blazin Low Supporter LQ4 Join Date: Dec 2001 Location: richmond,va Posts: 1,417 Ride: 87 s10 2wd blazer Seller Rating: (0)	ok you will have to notch the cross memeber in order to get the truck pan fit. i used the ls2 oil pan. there is very little notching on the top of the cross member with that pan. as far as the mainfolds. they should fit. what mounts are you using? there is another option. the pans is like 500 and some from turbo time.with no cutting. the a/c accessories. there is a kit you can get to move the a/c up top so you do not have cut the frame also,

10-14-2007, 08:58 PM	#3
blazingrip LS1/9 inch curry rear end Join Date: Sep 2004 Location: Los Angeles, CA. Posts: 39 Ride: 1986 chevy s10 blazer Seller Rating: (0)	Well the cross member is notched as much as we felt comfortable with but it still didn't seem to be enough. I am using the stealth mounts from jtr. I only have about 1 1/2" space between the drivers side exhaust port and the steering shaft so I'm not sure how I am going to get it to work. thanks for the post

10-15-2007, 11:21 AM	#4
m8w6r77 Blazin Low Supporter LQ4 Join Date: Dec 2001 Location: richmond,va Posts: 1,417 Ride: 87 s10 2wd blazer Seller Rating: (0)	i think it is a 2x10inch notch they you have to take out with mod truck pan. check this out. http://www.s10forum.com/forum/f213/p...x-swap-283608/