gen vi block
 

does anyone know where or who has a supply of these blocks ?? 454 or 502??

any leads would be great!!

Re: gen vi block
 

New blocks? Sallee Chevrolet seems to be a favorite.

Used ones, I have a 454 (2000 7.4 MPI) that needs #1 cyl. sleeved. Still has crank, rod's, pistons although #1 piston is scrap. It's a 7.4 so you may not care about the cast rotating assbly anyway. It had about 250 fresh water hours on it when a valve dropped. #1 piston didn't fair so well, neither did the cylinder wall. :eek:

Re: gen vi block
 

how much do you want for your block ?? and how far are you from houston?? and i would prefer used!!

Re: gen vi block
 

If you were going to build a 540 would you start with a gm 502 our would you buy a merlin block?? Money is a factor as well???

Re: gen vi block
 

I used a GM 502 paid around a grand for it.

Re: gen vi block
 

what's the specs on your motor??? I ready to get rid of my 454!

Re: gen vi block
 

You can build a 496 out of your 454. I used JE pistons, H beam rods and the biggest mistake was a eagle crank which after it was remachined worked out fine. The heads I used where merlin which have been replaced again with stock 454 mag heads by a friend of mine who now owns the motor.

Re: gen vi block
 

did you have problems with the merlin heads?? I have a set of them as well and i was debating on using the on the 540 that I want to build. I would like to find a proven setup that I can build this winter. Around the 625-650hp with no blower.

Re: gen vi block
 

The problem was I bought 345 intake runners which with the compression I was running turned out to be to much. The new owner had the 454 shaved down to raise it which after one season his engine builder believes the stock heads are to small and they want to buy the Merlins and shave them down. The motor is going on a dyno in the next few weeks and they believe it will be 700 to 750hp. The combo I had with the heads and mild cam was around 550hp.

Re: gen vi block
 

i just need a gen vi bare block i dont need any thing else. and used would be the best way to go. ??

Re: gen vi block
 

Python- I think I'm right on this but maybe someone else can verify. The gen6 block uses a 1 piece rear main seal and therefore uses a different crank than the gen4 style crank. I don't think there is a 4.25" stroker crank available in the gen6 style. Most of the 540's use a gen4 block and gen4 stroker crank. There is a real seal conversion kit to allow you to use a gen4 crank in a gen6 block but I don't how well they work.

Re: gen vi block
 

There are 4.25 cranks out there in the 600$ range that will work on a gen 6 block,the only problem is they are eagle or callies dragon slayer. The Eagle,Elgin,Wheeler and sact stuff is made in CHINA and often requires Re-machining plus because of its qustionable origin would not be good candidate for big hp but fine at 600-650 level,Smitty

Re: gen vi block
 

You are correct you can buy a aftermarket piece to allow you to use Gen 4 cranks on Gen 6 motors. Mine worked fine. I talked to the guys at a local marina they they have done 1/2 donzen of those.

Re: gen vi block
 

I'm actually I'm in the DFW area but the block is just outside Austin at Full Throttle Marine. Before deciding to have a 540 built instead, options with mine were to sleeve and just replace the rod and piston, sleeve and bore, sleeve/bore/stroke to 496.

If you think it's something you'd consider, let me know. OSO member bobl is who has it. I'm sure he could have his machine shop fix the block back up too. Shoot, he could build it from you if you needed. Otherwise pick it up or have it shipped if that was feasable.

As for price, I'd need to ask Bob for some guidance. I don't know what a fair price would be. Since he's building my 540, I'd like to think it's worth about $10k. LOL :evilb:

Re: gen vi block
 

yes they do make a "stroker" crank for a one piece rear main! but does any one know where there is an abundance of used blocks at??

Re: gen vi block
 

I will have a number for a guy that sell buildable marine 502s. He does a lot of swap meets in TX, but I think he is from OK. I should have the info in about 15 min and then I will call him and get the details.

Re: gen vi block
 

cool python the info would be great!! 454 would be good too!! not looking to spend too much on the block!!

Re: gen vi block
 

I left him a message. I will post the info when he calls me back. Fountain_333 are you from Houston?? I do some boating on Lake Conroe and I did live in Clear Lake for a while.

Re: gen vi block
 

i am in Houston now but i was originally form Michigan and my boat is in Florida?? ah well?? how is the boating on lake conroe?? also is there a demand for marine engines around this area and if so who is filling the demand??

Re: gen vi block
 

Hey that guys info:
Bob Sherman
405-740-8561
he said that he had a new 502 for $1100 with cam bearing and freeze plugs in it. Also, he has used stuff as well. I don't know much about marine engine builder in the Houston area. We try to-do all the work our selfs. Lake Conroe is alot of fun!!! lots of nice boats.

Re: gen vi block
 

if anyone in the Houston area needs some machining done just contact me!!