85 burb meets 6.0 lq4

[68GMCCustom]

x-pipe will help....it has a quieting effect on any system.

[85burb]

Still cant beleve i cant find any dang headers that WILL fit. With tons of swaps done on 73-87 trucks no one sells them yet. I dont under stand why they are not made yet. Hell they even sell them for 88-98 trucks. That is crap they skipped one of the most popular body styles. Guess i will have to get fbody headers and hope for the best...

[85burb]

I am also getting woried about my mounts i got. One diagram shows them to set the engine 1.5 inches forward of stock location. I have 4592 plates. Maybe i am just getting overly excited about all this stuff due to time limits i have to put motor in.....

[okieraptor]

Why wont the 73-87 ones fit. Fire wall forward is the same as the trucks.

[85burb]

Originally Posted by okieraptor

Why wont the 73-87 ones fit. Fire wall forward is the same as the trucks.

they dont make headers for that year if that is what you are refering to.. only S&P makes them for 600 bucks for mid lenght.

[68 TT]

Originally Posted by 85burb

Still cant beleve i cant find any dang headers that WILL fit. With tons of swaps done on 73-87 trucks no one sells them yet. I dont under stand why they are not made yet. Hell they even sell them for 88-98 trucks. That is crap they skipped one of the most popular body styles. Guess i will have to get fbody headers and hope for the best...

You can do like the third gen F-body guys were doing and modify a set of big block headers to fit. The tube spacing is pretty close to the LS and doesn't take much to make them line up with a set of LS flanges.

I put these on my 67 C10 when it had a big block in it. They fit well and have 1-3/4" tubes which is great for an LQ4.

http://www.summitracing.com/parts/SUM-G9011/ $120

Add $40 for the flanges http://www.summitracing.com/parts/PTE-H7892/

Just need a little quality time with a cut off saw and a welder.

This is what I will be doing when I get to the LS swap in my 67.

[68GMCCustom]

you need to find yourself an extra day or two somehow. That way you'll have time to order something from Summit or somebody for O/N delivery for whatever you need. Like start Thur. afternoon and you can order till late at night. for Fri. and/or Sat. deliveries.

[85burb]

Originally Posted by 68GMCCustom

you need to find yourself an extra day or two somehow. That way you'll have time to order something from Summit or somebody for O/N delivery for whatever you need. Like start Thur. afternoon and you can order till late at night. for Fri. and/or Sat. deliveries.

I may wait tell i move after lease is up. I will be trying to find a house to rent that will have garage. That way i am in no rush at all. I dont need to drive it. We will see. I guess it all depends on how fast i get my parts and as you can see has slowed to a crawl. Also saving for trip to colorado next month.

I will be trying the fbody headers and trying to get a set of maniflods from 6.2 liter or one like yours. They look sweet and i know what i have to do to make them fit. Will only have to notch frame lip a tiny bit. So i will have a back up plan if the fbodys dont fit.

[85burb]

I got a cam rec from comp today. Below is what he said but with coustom girnd for 110 LSA. What do yall think?

PART NO. 54-414-11
01 INTAKE MASTER 3766R
02 EXHAUST MASTER 3767R
03 ENGINE LS1 XR269HR-14
04 GRIND NUMBER LS1 XR269HR-14

rpm range:13-6300
Valve timing: 0.006
Lobe-center angle 114
Intake center line 112
Duration Int:269 exh:273
@ .050: 216int 220exh
Lift int:525 exh:532
lobe lift: int:.309 exh:.313

[87chevy.com]

My friend bough the mother thumper cam from Comp.. pretty nasty. It was for his 5.3 in his 76 nova... he is getting the 5.3 stroked and poked to a 383... cant wait..

[68GMCCustom]

other then the exh. lift number that cam is a little milder then the GM Hot cam but hotter then say the '01 Z06 cam. So what are you thinking?

the thumper cams are more about the idle and sound, then about making big power.

[okieraptor]

Looks like it would be ok. I don't think you would want to any bigger so not to lose ta seeing how you have a 4x4.

[85burb]

I not really sure what i think i want good power. But sitll want to hear it some. Dont want it to idle like grandmas cadillac. But also dont want a 2000 rpm base idle. So far still going with the GM Hot Cam. Still a while away for cam purchase. Thanks. Is it true that the less lobe seperation angle helps carb motors get better signal to carb for better throttle response? Think i read that some ware.

[68GMCCustom]

not sure...but my LSx motor guy suggested 112LSA for me...and he knows I wanted it nasty... but streetable.

by comparison....my cam is a 223/231 @ .050, .610/.617 lift, 112LSA. Using Patriots Gold .650 dual spring kit with bases, titanium retainers, keepers, and seals.

[68GMCCustom]

with all the other work I have to do....thats too much work for me! I'll just buy a set of LS1 swap headers for a 2nd gen.

[okieraptor]

68, that's a good tip.

Now is it long tube headers for torque and Shorties for high rpm horsepower or the other way around?

[85burb]

Comp cams says the 110 will give choppy idle and better low end tq. Does that make cents to any one? I always thought the choppy idle cams were for top end power not low end tq....

[okieraptor]

The amount of "lope" or choppy sound is the amount of lobe seperation you have.

[85burb]

so what they are saying is ones with massive lope have good low end tq? makes no sence...

[68GMCCustom]

check out this arcticle:

cam_lobe_centerline_angle_tech


and this one:
camshaft_lobe_separation_angle_performance_test

[85burb]

Thanks for the info i will have to read friday after work. Sure it will clear some things up for me.

[85burb]

I liked the second article better. Think they both say the same thing tho. Looks like comp was right. Still up in the air about what one. I asked him how comps would compair to the GM Hot Cam. Sent him specs for it and waiting on a reponse. He has ben pretty fast so far. Thanks for the links. Now that i have read that i can remember learning that in school....

[68GMCCustom]

you'll have to re-tune (and possibly re-jet/etc) that carb for your LSx when you install it. But at least you'll have your new fuel system in and taken care of so its not as much of an issue when you do the motor swap.

[85burb]

Do you think it will be pretty close for my elderly 350? All i want to do is set the idle and speed. It has ben so long cents i have adjusted one. What is the best way to set idle mix?

[85burb]

TA DA as my little girl would say....