05 3500 from a malibu, lt1 twin 48mm tb, hand made composite dual plenum intake, 60degreev6.com 1280 cam and pr, ls6 valve springs, ported lower plenum, 3400 modified fuel rail, 24lb injectors, 3.4 iron head head gaskets (10.26 cr), ported and polished heads, ported trueleo headers, rigged y pipe (ill get it to an exhaust shop when i can!), tce reluctor wheel (external crank trigger), 7730 ecm, flowtech muff, more explination later, im tired. heres the pics


tapped the head for the larger sensor

modified fuel lines for fiero connections

notched the decklid with an angle grinder

tce reluctor wheel, modified

dual plenum with fancy paint....not done yet


ugly

what goes here?


its obvious that its not finished yet. still gotta sort some things out. wont be long now tho! really have to get the y pipe welded up, i used flex hose and clamps!
gotta get the alt hooked up, cut the manifold studs, make an intake pipe, sort out the vac lines, test it for leaks, secure wiring from headers, make ac connections, and of course tuning.

what ya think?

part lt1, part 3500. im waiting on my brother so i can get the pictures of the guts of this thing. i recived a cracked upper plenum and this is what i did with it. its not done yet, still have to make bosses for the bolts, plane the tb flange, make vacuum fittings, sand, paint....bla bla bla. but the structure is all there. the lid is made of mat and 3k twill weave, polyester resin, jbweld the base is obviously a 3500. i did hack a perfectly good lt1 manifold for this, but its been 2 years and the damn thing wouldnt sell.

the plenum volume is about 70 cu.in. per side, throttle bore is 48mm per side. iac and tps are stock lt1, the iac port goes to a chamber that feeds both plenums (plena?) and also shares the vacuum for the iac and brake booster. the individual plenums are fed by thier own pipes in a similar fashion to the stock 3500.

im not hoping to make any extra power, i just want to see what happens here. it was a fun project to knock out while i was waiting for my new 3500 intake to come in. i will use this one if all works out well

the paint on here was just to check to see if i needed to go further with the sanding....










heres why

Dayumn d00d, thats intense, does need a little finishing work lol but thats a wild setup, can't wait to see/hear it run. I don't get what you made the intake out of, could you pm me details, I am looking for a way to make a new upper plenum for my 2.8L.

[This message has been edited by Mr.PBody (edited 12-16-2007).]

fiberglass, good old fashon layup. i used mat, 3k twill woven roving, styrephome mold, lt1plenum neck, lt1 tb, 3500 upper intake, playdoh (playdoh and jb weld is a no no!!!), styrene polester resin, mekp, lots of sand paper,and misc suplies.

if i had the time, id make you one for the 2.8. but im just to damn busy right now.

I was wondering why you didn't use the stock location for the crank position sensor then I remembered the 3500 does not have a 7x ring on the crank. I need to get in touch with my friend and see if I can have some more made for those wanting to use the internal option i'm using. Your success should encourage others to do more of these swaps over the 3.4 . You should be off to a good start with a 3.1 program and fuel injector correction in the chip initially. I'm still working out the acceleration enrichment tables so I can finally test drive the 3.9, it's starting to rev pretty fierce.

Where's the turbo

[This message has been edited by Joseph Upson (edited 12-16-2007).]

lol, fiberglass plenums....no turbo yet.

ill be starting with my tune from the 3.4 i had in there. i was using dis as well. hopefully i dont get into a KR situation. i used the 3.4 iron head gaskets and heads where milled some. so thats gonna put me much higher than the stock 9.8 compression. plus using the alum heads with the iron head fuel spark tables is gonna be bad ju ju. luckily i can detune this with the tce reluctor wheel

I've got some 10" wide fiberglass, what else do I need to buy and where can I get it. Do I sculpt it out of styrofome (sp?), seal it wit something, lay glass over that, resin it with something, then cut the fiberglass into two peices, pull it off the mold, then glue it back together? I somewhat understand how to go about it but I wouldn't know where to buy the stuff. If you want to prevent a thread hi-jack, pm me. and we can talk about it there or I can give you my AIM, I've talked to your brother the other day randomly haha.

k ill pm u later

quote Originally posted by Joseph Upson: Where's the turbo

With a 10.26CR I don't see this thing getting a turbo.

Sardonyx even at 10.26:1, I could see you trying to slap a turbo on there, just fill it up with C16, and plug your ears.

my buddy has a turbo lt1 and the compression is higher than that.

quote Originally posted by merlot566jka: lol, fiberglass plenums....no turbo yet. ill be starting with my tune from the 3.4 i had in there. i was using dis as well. hopefully i dont get into a KR situation. i used the 3.4 iron head gaskets and heads where milled some. so thats gonna put me much higher than the stock 9.8 compression. plus using the alum heads with the iron head fuel spark tables is gonna be bad ju ju. luckily i can detune this with the tce reluctor wheel

You seriously need to reconsider this and start with a tune for an aluminum head engine, others who know a lot more about tuning than I do will probably confirm this mainly because of how different the spark table is for an aluminum head engine vs. cast iron and also because of the vastly improved flow characteristics in the 3500. Once you get your ALDL back up and running you might find quite a bit of knock retard under load and maybe even off load.

quote Originally posted by merlot566jka: coolant line caps exploding is funny. it makes you think fire really fast when working with a fiero. had a couple nipple caps blow off and scared the **** outa me. but all is well now. ill post a vid in a sec

I've done that scared the crap outa me too...
It's lookin good so far.

ur in okc.....???? im off of hefner and i35

I'm down off of 240 and Sooner.

wee should hang out some time. theres another guy up here in edmond that has an 86se 4 spd, and madcurl is up in mwc, and designone is in mwc area as well. we should get together and take over a sonic some time

Dern you guys. I used to live in Norman, now I'm way over here. Why do all the cool cars have to be over there? Well, there are some cool ones here too, but jeez.

The 3500 sounds like a sweet build, definitely sounds meaner at idle than my twin turbo L98 IROC-Z (though it isn't ), but the exhaust leak might help that, heh. Still, everyone's going to ask you which V8 you put in there.

quote Originally posted by merlot566jka: my buddy has a turbo lt1 and the compression is higher than that.

who does? someone in virgin-ya? i know no one here that i know has an lt1. letalone the $$ and time to do such a thing. well maybe eric, but he is just hooking a 3.8 up.

quote Originally posted by Mr.PBody: I've got some 10" wide fiberglass, what else do I need to buy and where can I get it. Do I sculpt it out of styrofome (sp?), seal it wit something, lay glass over that, resin it with something, then cut the fiberglass into two peices, pull it off the mold, then glue it back together? I somewhat understand how to go about it but I wouldn't know where to buy the stuff. If you want to prevent a thread hi-jack, pm me. and we can talk about it there or I can give you my AIM, I've talked to your brother the other day randomly haha.

which one were u? ive gotten 2 people iming randomly from here so far.

[This message has been edited by americasfuture2k (edited 12-19-2007).]

ttt

quote Originally posted by merlot566jka: wee should hang out some time. theres another guy up here in edmond that has an 86se 4 spd, and madcurl is up in mwc, and designone is in mwc area as well. we should get together and take over a sonic some time

That would be cool. I thought madcurl was out in cali though... maybe not

lol nope, hes in a van, down by the river

quote Originally posted by merlot566jka: ttt

WTF does "ttt" mean? im clueless on that. and IIRC. kinda sad since i frequent the s10forum, mp3car forums, and fiero.nl a bit.

quote Originally posted by americasfuture2k: WTF does "ttt" mean? im clueless on that. and IIRC. kinda sad since i frequent the s10forum, mp3car forums, and fiero.nl a bit.

To-The-Top

It keeps a topic from being submerged

Norm

IIRC (if i recall) that ttt means (to the top)

cmon mike.... lmfao

just trying to get some coverage