Where can i find a used indy aluminum wedge big block? Really cant afford new right now so my only option would be used.

Just check around. Here, Yellow Bullet, ForAbodiesonly, forBbodiesonly, forEbodiesonly, Facebook. I got mine off of Racing Junk. Cheap, but needs sleeves. I can deal with that.

Good luck with that.

They are around but guys want them for nothing or hesitate and if the price is right they go fast.

Engine builders that have them want to build them into engine and sell them. Others that have them do not let them go like their stock blocks. We have had to fix what ever was wrong with them and getting another is a real pain somtimes.

Why do you want aluminum?

Why wouldn't you want aluminum? If I could afford it, all my engines would be aluminum.

I have an iron World wedge block that needs all 8 sleeved.
Prob going to sell it, just havent listed it yet.
Has 4.600 bore. Thats why it needs sleeved.
#8 has hair line crack.
So i figure all 8 need sleeved.

I want the weight loss and the ability to repair. I am going to run a f2 procharger and i would rather not use the old iron blocks.

All the guys I know who run heads up, N/A or power adders, that have raced with cast grey iron and or with Compact Graphite Iron blocks and with good race aluminum blocks with the same parts in them ran faster at the track and made more power (30 to 80Hp depending on the race,r motor size and RPM and who was telling the story) on the engine dynos they tested on
What type of blocks do all the Pro Stock team use
I'll give you a clue, they ain't aluminum the last time I checked

I'm glad you did your research on this before making your decision


Good luck on finding a used block
I talked to Tim Banning at FHO last week about a new KB low deck aluminum street wedge block (no wet sleeves) for one of my local customers, he said they will make them soon but they ain't cheap
I assembled a KB street hemi dry sleeve block(#55, I think) for a blower on the street for a customer years ago when Mopar sold them through their dealer network, it work good once we got the EFI problems sorted and tune up correctly

Well a few observations. I basically prefer aluminum all the time these days, reparability is a part of it but for me weight is the main reason. I think we make a bit of power but I no way believe that the loss of power, if any is made up but the weight savings. Give me the 165-175lbs less weight any day.

The heads up car is also an ALUMINUM block and being a SB Chebbie the choices are endless. The aluminum block was chosen for the same reason. Weight savings.

As for Mopar blocks, they are out there to be certain. When you see one you need to be ready to act. Another thing is on some(indy)if they need sleeves it can get expensive to purchase and have them installed. Not a lot of places will do sleeves in those blocks. Also beware of a block with zero history. At a point aluminum gets "soft" through heat cycles. No different than aluminum rods. I have purchased a few over the years and been bitten once by "soft" material.

I'm aluminum all the way. I have a steel engine and an aluminum engine. They both have the same heads and the steel one makes 100 more HP than the aluminum engine. It takes a lot more HP to make up for the extra weight. The aluminum engine is faster with less porting, less camshaft, less compression, less flow, etc.

All things equal the aluminum wins hands down. I did ready some where that ring seal was an issue with aluminum but like stated above the weight saving far outweighs the power lose if there is any.

Ring seal perhaps was a problem on the aluminum blocks of old, but not so much anymore. I know people that run 4.560 sleeves in Mopar aluminum blocks.

they use iron because it's in the rule book.

Carl, NHRA tech and the Pro stock team owners and drivers have a rule changing meeting at the end of each year to decide what and how they will change the rules for the next year.
They could have had aluminum blocks years ago but most of the teams like Compact Graphite Iron blocks better
I wonder what type of blocks NASCAR cup teams use

Last I checked not many here are chasing ever last little HP..Trust me aluminum is the way to go unless you are one of those Comp, Pro Stock or Nascar guys on here...

I want to boost the bajeezers out of one! lol

Current LSX development suggests that aluminum moves around more than you want at really high power, and that the smallest bore size thickest wall) doesn't hurt much at high boost.