Aluminum Block ???

SY2455

SY2455

70's Veteran
1.Has any one done a build up around this GM Part #14011069

2. If they have what other parts were use?

3. What was the final HP & TQ numbers?

4. Did GM make both big valve & small valve Vortec Cyl heads?
 
ghettosled

ghettosled

SYTY SUPERSTORE
i also have one of these for sale at my shop if interested. There have been a couple high hp builds with aluminum blocks, but one must also consider the tradeoffs.
 
TT350

TT350

Manufacturer
What is the trade offs other than the money. I’d like to do the new aluminum V-8 dart block!
 
SY2455

SY2455

70's Veteran
Hey Mike what are tradeoffs or PRO & CONS of doing this, outside of money? It one way to reduce weight & keep the truck looking stock,with all the good stuff like A/C ETC... And by painting the block& heads no one would know but you & the builder. I know that GM only rate these V-6 blocks (good for 750hp) but it would give you a all aluminum engine.

1.On the builds you know off what was the (Cost vs HP & TQ & Weight)comparison between the aluminum & iron build?????

2.While we're on the build topic how much HP & TQ can we get below a 6000 rpm redline & STILL PASS CALIF EMISSIONS???
 
TT350

TT350

Manufacturer
I think all the ratings are very conservative. I’m running a 2 bolt main one peace seal 350 block and a stock cast crank if I had to guess I’m making over 700 HP. Way way past
what people say they are good for! Not guest 1 or2 passes 4 years and 100’s of passes!!!
Now that I’m bragging on it it will probably cum unglued the next time I put my foot in it. :D
 
SY2455

SY2455

70's Veteran
GM TURBO said:
Aluminum blocks can't handle the HP an iron block can.
Click to expand...

I not too sure about this the new LS1 block has kits to installed Turbos or blowers rated for 550hp to 700hp without changing pistons.
 
bigtime

bigtime

Sy-Ty Builder
Aluminum blocks do not have the rigidity that the iron blocks have so they give up ring seal right away. bearings have a shorter life to. cast makes more power period. just like anything else there are trade offs

Top fuelers use them because you can fix them, easy to change, light so they can put the weight other places. Remember a top fuel car makes more power than it can use anyway so giving some up really does no matter.
 
ghettosled

ghettosled

SYTY SUPERSTORE
aluminum has a tendancy to move, so your clearances for a performance motor will tend to vary much quicker then a cast block. Other then that i believe the blocks are 2 piece which means billet crank and our 2 piece rear main oil pan. i could go on and on, but unless you are in some serious competition i dont believe aluminum would be the way to go for the block. i may be mistaken but i think the LS1 aluminum blocks will only hold 1000hp or so reliably.
 
K

KGB Pilot125

New member
glad this topic came up. I was looking to building an aluminium motor for the Sy. the stock block and crank can only be pushed so far. we ahvnt found it yet. but I have a feeling it will soon. (821hp at the rear wheels)

I was looking to save weight. Guess it will be cast iron after all. have to buy a bunch of fiberglass instead.
 
TT350

TT350

Manufacturer
Has any one used a stud girdle will the clear pan the?
I’m running a modified 4.3 4X4 pan on my motor.
Guest looking at it it looks like it would be tite fit between
the timing cover and the sump.
 
K

KGB Pilot125

New member
I only found one company that sells a girdle for the small block I found em in the back of national dragster. anyways the GF threw it away and I cnat find em now. if you do find one let me know.
 
Syborg Twin Turbo

Syborg Twin Turbo

Syborg Twin Turbo
i am currently building a 4.3 aluminum v6 however it's the 067 block. I am not going for big hp so i am not so concerned about movement.

I agree with Mike that if you are going for high HP (over 600) you may want to consider a cast iron block or a v8
 
You must log in or register to reply here.
Top