400 project
Thread Starter
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Mountain Pass
Joined: Feb 2017
Posts: 242
Likes: 17
From: OH
400 project
So my build started as a 400 full build... Molnar rods, Moldex crank, and Racetec pistons with iron heads.
Now it's turned into a whole other animal. TMI 444 stroker, aluminum heads, and a 6-71. The numbers are quite astounding that I'm estimating while only aiming for 7200 rpm. Wish me luck guys I've got 10k in it so far and I'm pretty sure I'm going to split the block when I lean on it hard. I'll post a few pics of my collected parts when I get home from work.
Just a slow little grudge build... Oh yeah 2 kits of giggle gas on top as well (real small maybe 75 shot each)
Now it's turned into a whole other animal. TMI 444 stroker, aluminum heads, and a 6-71. The numbers are quite astounding that I'm estimating while only aiming for 7200 rpm. Wish me luck guys I've got 10k in it so far and I'm pretty sure I'm going to split the block when I lean on it hard. I'll post a few pics of my collected parts when I get home from work.
Just a slow little grudge build... Oh yeah 2 kits of giggle gas on top as well (real small maybe 75 shot each)
Thread Starter
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Mountain Pass
Joined: Feb 2017
Posts: 242
Likes: 17
From: OH
Aaaand now shopping for a cam since I just remembered this thing won't like a 6-71... Recommendation? Heads are set up for flat tappet up to .580 but realistically more like .525-.550 intake side with boost
Thread Starter
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Mountain Pass
Joined: Feb 2017
Posts: 242
Likes: 17
From: OH
It "should" be a race only setup.... But I'll probably run it to work or something, Prosystems sent me a Venom VX set up for e85 with extra Jets and bleeds for e98 with I might get by the barrel.
Work is less than 2 miles. So it'll be out a bit for sure.
I'll probably need a pair of these carbs if I turn it up. Pulleys I have are 1:1, 20, 40, and 60% OD (58.3333%)
Work is less than 2 miles. So it'll be out a bit for sure.
I'll probably need a pair of these carbs if I turn it up. Pulleys I have are 1:1, 20, 40, and 60% OD (58.3333%)
Thread Starter
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Mountain Pass
Joined: Feb 2017
Posts: 242
Likes: 17
From: OH
Super Moderator
Joined: Apr 2004
Posts: 34,466
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You can't run an overdriven 6-71 on top of 13:1 + compression.
Where are you getting your engine building information?
Where are you getting your engine building information?
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Mountain Pass
Joined: Feb 2017
Posts: 242
Likes: 17
From: OH
Who says you can't? I expect stuff to break when I lean on it hard but I won't know till I do it. I'm looking at some of the very very few facts I can find from TAD builders I run across that doesn't give their combinations away plus a couple nitro guys I have on FB if they ever post.
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Thread Starter
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Mountain Pass
Joined: Feb 2017
Posts: 242
Likes: 17
From: OH
I appreciate it buddy! Ill double check my numbers though but I think it'll hold. Also I'll look at a 10% underdrive pulley set as well. I'll probably need it when going to 10-71 and billet block.
Laughing Gas
Joined: Sep 2013
Posts: 1,112
Likes: 101
From: North Idaho
LiquidCowboy,
I'm all about hotrodding the 400.... however....
I think "leaning on it hard" would actually include starting said engine. I'm going to go do some research and see how 13.5:1 looks in the forced induction world. Obviously you're on race gas or straight methanol. Are you going to run a fully filled block, 3/4 fill? Four bolt mains with a girdle?
i really think you would be happier in the long run to start at 9:1 compression and work up from there with pullies, nitrous, timing, etc.
Regardless, I wish you the best of luck!
I'm all about hotrodding the 400.... however....
I think "leaning on it hard" would actually include starting said engine. I'm going to go do some research and see how 13.5:1 looks in the forced induction world. Obviously you're on race gas or straight methanol. Are you going to run a fully filled block, 3/4 fill? Four bolt mains with a girdle?
i really think you would be happier in the long run to start at 9:1 compression and work up from there with pullies, nitrous, timing, etc.
Regardless, I wish you the best of luck!
Thread Starter
|
Mountain Pass
Joined: Feb 2017
Posts: 242
Likes: 17
From: OH
LiquidCowboy,
I'm all about hotrodding the 400.... however....
I think "leaning on it hard" would actually include starting said engine. I'm going to go do some research and see how 13.5:1 looks in the forced induction world. Obviously you're on race gas or straight methanol. Are you going to run a fully filled block, 3/4 fill? Four bolt mains with a girdle?
i really think you would be happier in the long run to start at 9:1 compression and work up from there with pullies, nitrous, timing, etc.
Regardless, I wish you the best of luck!
I'm all about hotrodding the 400.... however....
I think "leaning on it hard" would actually include starting said engine. I'm going to go do some research and see how 13.5:1 looks in the forced induction world. Obviously you're on race gas or straight methanol. Are you going to run a fully filled block, 3/4 fill? Four bolt mains with a girdle?
i really think you would be happier in the long run to start at 9:1 compression and work up from there with pullies, nitrous, timing, etc.
Regardless, I wish you the best of luck!
I did do some shopping for blocks. First email was looking feel out if 5k would be near enough (eh maybe) for a billet sleeved unit. But I'll worry about that later.
Laughing Gas
Joined: Sep 2013
Posts: 1,112
Likes: 101
From: North Idaho
Honestly, I wouldn't be worried about the block per se, but about all of the other big money components that may get destroyed when something lets go. Forget losing a piston and a valve - consider the cost of losing the ENTIRE ENGINE when something goes... including the 6-71 supercharger.