L99/LT1 Intake?

[armybyrd]

I was browsing at my local pull-n-pay and saw a 90's Caprice with the L99(4.3 v8). From what Ive read these engines didnt make much power(200hp/245tq) but I also read some had the Lt1 intake manifold. Has anyone swapped one onto a 305 or gen I 350? I know Id need the harness but if its worth it Im sure I could get it for cheap.

[INSIDIOUS '86]

Trying to do fuel injection?
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[TwinTurbo]

Yes, a baby LT1, a 3" stroke 305 block. They do have LT1 intakes on them. You do realize that you have to modify the bolt pattern drill and then epoxy or weld a dizzy mount & hold don and then use external crossovers for the coolant?

[bohmankid]

Not worth the hassle IMO. You can pick up an entire LT1 with all accessories and wiring harness and put it in your truck for cheap.

[bnoon]

Originally Posted by TwinTurbo

They do have LT1 intakes on them.

The internal ports are not the same from the "baby" setups, they're smaller. Same modifications apply though.

I've done a few of the conversions for TPI to LT1 intake swaps and they are easy, but from carbed or TBI to LT1 it's going to take a new harness. Score a TPI harness cheap and the rest is pretty easy actually. Here's a site that still hosts some of the write ups that I saw back in the early 2000's when I did mine. http://sethirdgen.org/LT1.htm You can even use the LT4 intake with Vortec heads using the same methods!

EDIT: Oops, looks like most of those links are broken... Dang.