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87 regal grand national clone ls1 swap

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Old 04-14-2005, 09:53 PM
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Talking 87 regal grand national clone ls1 swap

hey whats up guys!!
I live in a cold frozen area with 3-4 months of semi warm days which it usually rains,it's called minnesota!!! any ways because of this are season for any street rod or race whatever is short. so here's my problem I want to completly swap out a stock 87 regal and clone it (hood,spoiler,trim, paint,etc)
to look like a g/n! well body parts are easy. I came across a 2001 camaro ls1
warrenty pull out long block roughly 20k and it ran it just had bad scoring in #7 caused tick when accelerating, I've had it rebuilt to stock .10 over with gm pistons etc and used existing heads. slowly over the past year i've pieced the stk coils fuel rail and 28lb injectors also have th350 trans with adaptor plate and 98 computor. I installed truck oil pan and stk t-body.
Here's my question what do i have to do for a vss on trans?also will my stock crossmember work in factory bolt pattern does it need diff c/m or ?
and will a a/c delco grand national fuel pump (which fits in my tank)
push enough fuel pressure???
one last question has anyone ever had ls1 performance make a custom
conversion wiring harness for them the guy there says it can be done??
all and all this is a long term hobby for me where i learn as i go, i'm not looking for serious h/p at this time i just want correct fit and reliablity,than
the goodies can be bolted on.

any info is good info

thanx
lsgb-1
(shawn)
Old 04-14-2005, 11:55 PM
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nice swap!

you dont need a vss signal for that trans, only the 4l60e and 80e
kickdown and vacuum for 350's

you can modify the stock underhood harness the power the stock engine harness
with just 3 factory connectors(you could make it 1 big).
you just remove the junk you dont need(non engine/emissions)
like this.
https://ls1tech.com/forums/conversions-swaps/99135-finished-my-underhood-wiring-harness.html

or just use speartech ------------------sponser-------->
nothing but great reviews on his work, off-board programming harness is bad ***!
Old 04-15-2005, 06:03 AM
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i installed a 6.0 im my 86 cutlass using a th-350 and adapter plate as well. the truck oil pan won't work, it hangs down about 3 inches below the crossmember. you'll need an f-body oil pan. if you have any questions pm me. thanks.
Old 04-15-2005, 07:05 AM
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that sounds awesome.....but how about a turbo LS1??
Old 04-15-2005, 09:35 AM
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thats the plan!!!!!!!!!!cool huh???
Old 04-15-2005, 05:00 PM
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If you need the 5 piece original Buick GN rear spoiler I have one that needs repainting. $150

You should send the heads off to Bo White for some porting and install a bigger cam. Plenty used cams for sale.

gnx7@hotmail.com

-Mark
Old 04-15-2005, 05:33 PM
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can i hve the 3.8 motor?..lol
Old 04-15-2005, 07:02 PM
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Originally Posted by 8KickassRS9
can i hve the 3.8 motor?..lol
you can have it free it ran and has a trans attached!!!
its sitting in hudson wi at a dealership by dumpster!!!
i figured a scrap guy might need it cause they haul em away!!!
better hurry though
Old 04-15-2005, 07:09 PM
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Originally Posted by 5.3 racer
i installed a 6.0 im my 86 cutlass using a th-350 and adapter plate as well. the truck oil pan won't work, it hangs down about 3 inches below the crossmember. you'll need an f-body oil pan. if you have any questions pm me. thanks.
I'VE GOT LOTS OF QUESTIONS????
LIKE WHAT DID YOU USE FOR STANDS ON FRAME FOR ENGINE AND VSS
SIGNAL FROM TRANS WHAT TO DO IN DETAIL????
DID YOU USE STK CROSSMEMBER???
WHAT FUEL SET UP WORKS BEST???
WILL A STOCK G/N FUEL PUMP WORK IF SO WHAT DO I NEED FOR A REGULATOR???

AND MANY MORE!!!

THANX ALOT
SHAWN
Old 04-15-2005, 07:11 PM
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Originally Posted by gnx7
If you need the 5 piece original Buick GN rear spoiler I have one that needs repainting. $150

You should send the heads off to Bo White for some porting and install a bigger cam. Plenty used cams for sale.

gnx7@hotmail.com

-Mark
I ALREADY HAVE ONE, BUT I DO NEED BUMPERS AND HEADLAMP BEZELS
OH FRT BUMPER LIGHTS ALSO???


SHAWN
Old 04-16-2005, 05:39 PM
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sent you a private message. thanks!
Old 04-16-2005, 06:29 PM
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I've Got Batwing Vette Oil Pan For Sale Its Brand New Never Used!!!
Other Misc Vette Parts Also Email With What You Need!!
Also Misc G-body Parts!!!
Old 04-16-2005, 06:41 PM
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My brother in law parted out a 87 Grand national. Has alot of the parts in the garage still, could prolly email him and see what he has left.

Billdogg86@hotmail.com
Old 04-22-2005, 08:35 PM
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Originally Posted by Gen3Benz
nice swap!

you dont need a vss signal for that trans, only the 4l60e and 80e
kickdown and vacuum for 350's

you can modify the stock underhood harness the power the stock engine harness
with just 3 factory connectors(you could make it 1 big).
you just remove the junk you dont need(non engine/emissions)
like this.
https://ls1tech.com/forums/showthread.php?t=99135

or just use speartech ------------------sponser-------->
nothing but great reviews on his work, off-board programming harness is bad ***!
dude thanx for all the info but i am not a wiring type guy soooo wondering if you are using a 98 pcm and if you had wiring diagrams so my friend can copy this ????



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