Bamaboy

Does anybody know where I can get a set of lt4 heads for my lt1? Also a high rise intake manifold for a lt4. I was told they will bolt right on the lt1 and with a hot cam it will make tons of horsepower. Does this sound right? For a reasonable price,

Injuneer

GM no longer makes them. You have to look for a set of used heads and the intake manifold. They will bolt directly on, but as-cast, they offer only a small advantage over the LT1 heads. The stock LT1 heads can be ported to produce up to 500HP at the flywheel. How much HP are you looking for? The as-cast LT4 heads/intake, plus the LT4 HOT cam will not make "tons of HP". You might get to 400HP at the flywheel with a lot of supporting changes like larger throttle body, larger injectors, long tube headers and a good tune.

If its just the appearance of the red intake, you can buy an Edelbrock LT4 intake, but its just a so-so piece.

This post would make more sense in the "LT1 Based Engine Tech" forum, if you are more interested in HP than "Appearance".

Bamaboy

My goal for the car is about 450 horses at the wheels. Thanks for the help I am brand new to the site so I am still tryin to figure the site out. I was also told that with the lt1 engine it seems that mid tube headers get better performance than the long tube and ideas on this one.

rpmatredline

I don't know who is giving you your info but I wouldn't listen to them anymore. I have mids and like them but it all depends on your mods. Mids make better power than stock manifolds but if you are gonna be a heavy breather you should do longtubes. If you were gonna do an LT4 you should save up another grand and do a LE or AI heads and cam.. That will get you your desired HP.

n2ceptor

I suggest searching the the LT1 Tech section... There is alot of intel for what you are trying to achieve... Thats what I did when joining the site...

A question is never dumb, but probably been asked a few dozen times..

I see your at Fort Campbell, 11B ???

Injuneer

Since this doesn't really seem to belong in "Appearance", let's move it where it belongs.

RamAir95TA

Anything with the words "LT4" on it at this point is just a novelty.

Stock LT1 heads in the hands of a proper porter are capable of far more than 500fwhp with a matched camshaft, tuning, and all of the necessary bolt-ons.

If you want 450HP to the wheels, do what I did. Go here, and nowhere else: www.advancedinduction.com

Mid-tubes are great for emissions and mild HP gains, but long tubes make the most overall power.

Bamaboy

Thanks for all the ideas like I said I am not a great mechanic thats why I joined the site so I would appreciate it if you do want to post a good opinion not a smart mouth one just dont post one at all. thanks. But for the guys really trying to help I really do thank you guys for it like I said Im new and tryin to figure it out.

Injuneer

I'll take minor exception to the "long tubes make the most overall power" statement... . I have dyno results from the previous owner of my modified AS&M's that show the AS&M's made equal or more power above 5,000RPM than Hooker LT's, until he got over 800HP. At that level, the Hookers had a 10 HP/10 lb-ft advantage. He installed the Hookers and took it to 1,125HP. I picked up his AS&M's dirt cheap.

The LT's do good things for low RPM torque, and are great for street setups. I don't think you can go wrong with either, recognizing that each specific brand will be different from another brand.