sbc 400?
08-28-2011, 05:50 PM
#2
Externally they are just about identical. It will fit inside no problem and use the same motor mounts and exhaust. The accessories up front and the radiator hoses are all different though. You will also need to trim the cowl if you run a tall intake with a 4-bbl carb, and a lower distributor is a good idea.
08-28-2011, 05:56 PM
#3
yes i was assuming i would maybe need a cowl. But i just didn't know about if it would bolt straight up or not. But thats good info. I want to run the fewest accessories possible. how is the water pump run on these blocks?
And do you think it will be worth the power gain to build this motor. To be honest I'm just tired of the lt1 and efi... want carb and more power. I'm looking to spend around 10k. For close to 600hp
And do you think it will be worth the power gain to build this motor. To be honest I'm just tired of the lt1 and efi... want carb and more power. I'm looking to spend around 10k. For close to 600hp
08-28-2011, 07:00 PM
#6
I have thought of that. But I just think I'm about maxed out as it is. these heads for an lt1 are about 6k or more... 10k in the motor. Don't really want to do anything else. im eventually gonna put in a bigger rear end and beef up the drive train. but just the motor for now.
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08-28-2011, 07:44 PM
#14
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A 400 block is risky to get to a 434 from what I have been told. 406 is easy and no problem but the extra clearancing for the stroke can cause problems.
Good luck in whatever you choose and keep us all updated
Good luck in whatever you choose and keep us all updated
08-28-2011, 08:45 PM
#20
Because those heads are more of a novelty than anything else. I think there were only two actual sets produced for the LT1 and I think only one of them even ran because tuning them was such a nightmare.
Not to mention you won't see 600whp just by changing to a set of heads. There is a far more common and cost-effective method to reach 600whp, and it usually involves spray or boost.
Do you know what 600whp feels like? You want 600whp on pump gas without high compression? How many 600whp N/A LT1s have you seen in real life or even on the forums? What kind of ETs are you shooting for?
You're talking about an engine putting out close to 700fwhp to get 600whp. You're going to need a high dollar fuel system, 18-degree converted SBC heads or equivalent, Fast, Motec, or Megasquirt aftermarket fuel management system, HUGE solid roller, etc. - the list is endless, and VERY expensive.
In short your goals are very unrealistic for your budget. A motor of that caliber with all of the supporting modifications plus the nightmare that tuning would likely be is an easy $20k+. Do a search for roadtrip120. His car just barely made 550whp and I'll guarantee you he has an easy $30k+, probably more, into that setup. Pretty sure he currently holds the 6-speed LT1 record at ~10.0@130+.
Not to mention you won't see 600whp just by changing to a set of heads. There is a far more common and cost-effective method to reach 600whp, and it usually involves spray or boost.
Do you know what 600whp feels like? You want 600whp on pump gas without high compression? How many 600whp N/A LT1s have you seen in real life or even on the forums? What kind of ETs are you shooting for?
You're talking about an engine putting out close to 700fwhp to get 600whp. You're going to need a high dollar fuel system, 18-degree converted SBC heads or equivalent, Fast, Motec, or Megasquirt aftermarket fuel management system, HUGE solid roller, etc. - the list is endless, and VERY expensive.
In short your goals are very unrealistic for your budget. A motor of that caliber with all of the supporting modifications plus the nightmare that tuning would likely be is an easy $20k+. Do a search for roadtrip120. His car just barely made 550whp and I'll guarantee you he has an easy $30k+, probably more, into that setup. Pretty sure he currently holds the 6-speed LT1 record at ~10.0@130+.