Yes, I know these aren't the 'best' heads for a small-block street machine, but I heard that they can make f-bodies fast.

I've been looking into what it would take to make these heads bolt up to a Gen I block and Gen I intake. This is what I have so far:

Head bolt holes are okay.

Some passage on the combustion chamber side (?) has to be plugged? What needs to be welded shut?

Ports may be 'slightly' misaligned. It's best to change the intake's runners to meet the head intake ports, rather than the other way around.

The holes that the intake are to bolt to, are in the wrong places/angle. So, you must match an intake to the converted heads with respect to bolts.

There are no provision for the water crossover that goes through the intake manifold. This is my biggest question. Does this mean, you take a punch and make a dimple in the area you need the water passage (manifold face side of head)? Bore where the punch mark is. Then, open the hole up with a die-grinder? If this is the case, then it wouldn't be that hard if you just drill straight. But, if you have to drill strait and then go to an angle to hit water, this may be a problem. Then don't make a 90* drill bit or die grinder.

Anyway, I still don't know about the exhaust ports. I would *assume* that they would line up just dandy, but they may not.

I'd love to hear from some patrons. If I can't get help here, where else can one go, eh?

Ben T.

 

Seems that this site is back up,

http://www.thirdgen.org/techbb2/show...hreadid=178262

This a guy that converted some LT1 heads for use on a Gen I block, but it's not completely applicable because he used a LT1 intake manifold. This means the bolt holes all lined up for him and all of the ports did as well. Also, he didn't do the punch/bore/grind procedure I mentioned above to make the heat cross overs that would send water through the Gen I intake manifold. This is because he used the LT1 intake.

Anyway, I got to see what passages need to be welded up. See the pictures and you will know too. Also, I have been reading that the bolt patterns are the exact same as far as bolting the head to the block. The exhaust will bolt up, but the LT1 uses d-shaped ports that may not work perfectly with virgin/untouched headers... such as truck headers.

So, I am still wondering about adding the coolant passages and wondering about port alignment on the intake side.

Thanks to anyone who posts relevant information.

Ben T.

 

Guys check the above link out! tpi_roc got his heads back from being surfaced!

They look so nice! The stroker gets Al! If you had interest to click on this thread I really believe you guys should go check the thread on thirdgen.org out.

Ben T.

 

I am in the process of putting an old set of LT1 heads on a first gen SBC. Time will tell if it's worth it but I've put most of the details on
http://www.cardomain.com/ride/2973575

I would have preferred AFR heads but too cheap to spend the bucks.

I know this is an old thread but darned if I could find any of the pictures so I went my own way. Currently plugging in the LT1 manifold bolts so I can drill out for fresh gen 1 bolt pattern as I want to use my Weiand blower manifold.

 

I've always wondered why you usually don't see people drilling new coolant holes in the intake manifold surface of the heads to use the the standard coolant crossover in an SBC manifold.

Looks good. What paint/color is that silver/gray?

 

It's a BMW color,

http://stores.shop.ebay.com/TCPGloba...86365QQ_sasiZ1

Titanium grey metallic. Still need to buff it out. The Heads work real good with no overheating or leaks so I'm quite happy. It runs darn good but not sure how to tell if it's motor or light weight.

 

Is that the actual stuff you used? Single stage, BC/CC, laquer, enamel, urithane??

 

Because it's a waist of time!! There is nothing magical about LT1 heads. And there are plenty of very good heads that don't require any mods. and aren't expensive.