It's official Big cubed LTX block
05-19-2009, 06:35 PM
#41
I know a lot of guys here are the "lets go racing" guys....I used to be one as well, but I'm looking at the street motor side. Nothing like a 427+ cube mouse motor with 500+ lb. ft. to push a relatively "light" car around. Plus at 427, it still leaves plenty of room to go bigger down the road 
Transvestite!
05-20-2009, 07:59 AM
#49
VERY cool - was not expecting progress this soon!!! One BIG step to keeping up with the LSX guys. I can't wait to see what kind of heads come out of the woodwork next to feed these beasts. Kinda sucks that I am just finishing up the last few parts for my 383 though 
...
If I had the cash I would be tempted to sell it and start over with this block, but to be honest I havent driven my car for almost a year and I just want it running again!
Procharged 427 "street car"? Maybe next build
.
...If I had the cash I would be tempted to sell it and start over with this block, but to be honest I havent driven my car for almost a year and I just want it running again!
Procharged 427 "street car"? Maybe next build
. 
...
05-20-2009, 01:34 PM
#51
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so hold on...you're saying out of the box and i can throw in a 3.75 crank and whatever pistons and rods etc...and what cube is that? i basically shouldn't have bought my 396 block should i? ugh
05-20-2009, 04:56 PM
#53
11 Second Club
to answer your other question, if you got the 4.125 bore then add the 3.75 crank it would be a 400, the old original 400 SBC's ran that same combo.
if you bought a 396 shortblock you have a 3.875 crank, swap that into the new block witha little clearancing and you now have 414 CI's, but since you would need new pistons anyway why not increas the bore to 4.155 (420 CI) or maybe even 4.2 and have 430 CI's all using the same crank that came in your 396...
05-20-2009, 05:02 PM
#54
OK, so what is a 396 block? or was it a 396 shortblock you bought?
to answer your other question, if you got the 4.125 bore then add the 3.75 crank it would be a 400, the old original 400 SBC's ran that same combo.
if you bought a 396 shortblock you have a 3.875 crank, swap that into the new block witha little clearancing and you now have 414 CI's, but since you would need new pistons anyway why not increas the bore to 4.155 (420 CI) or maybe even 4.2 and have 430 CI's all using the same crank that came in your 396...
to answer your other question, if you got the 4.125 bore then add the 3.75 crank it would be a 400, the old original 400 SBC's ran that same combo.
if you bought a 396 shortblock you have a 3.875 crank, swap that into the new block witha little clearancing and you now have 414 CI's, but since you would need new pistons anyway why not increas the bore to 4.155 (420 CI) or maybe even 4.2 and have 430 CI's all using the same crank that came in your 396...
05-20-2009, 05:13 PM
#55
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sorry formula...i should have said i bought the bare block, pistons, rods and crank and it WAS together for a 396...
so how would i get to the 427? cause i agree with SS...that does sound WAY cooler! haha
so how would i get to the 427? cause i agree with SS...that does sound WAY cooler! haha
05-20-2009, 06:35 PM
#59
Let me run this by you guys to salivate on.
434 inches
Converted SB2.2's
Solid roller
4 hole throttlebody
I see 785 ish hp on pumpfuel here.
Or even
434 inches
Converted RHS 235's
Solid roller
Super Vic
I see 675+ hp here on pumpfuel
All on factory electronics, opti.
Be nasty in a streetcar.
434 inches
Converted SB2.2's
Solid roller
4 hole throttlebody
I see 785 ish hp on pumpfuel here.
Or even
434 inches
Converted RHS 235's
Solid roller
Super Vic
I see 675+ hp here on pumpfuel
All on factory electronics, opti.
Be nasty in a streetcar.
05-20-2009, 07:05 PM
#60
From the info I have seen on the dart board, you can take the block out to 4.200" and still have a lot of meat left .200" for support. Then you can EASILY clearance it a bit more for a 3.875" crank.
A 4.200" bore x a 3.875" crank comes to 429.xx inches or 7.0 liters.
I guess you CAN make it a 4.00" stroke but depending on your rod choice (most of them) you will HAVE to run a small base circle camshaft for clearance purposes.
A 4.200" bore x a 3.875" crank comes to 429.xx inches or 7.0 liters.
I guess you CAN make it a 4.00" stroke but depending on your rod choice (most of them) you will HAVE to run a small base circle camshaft for clearance purposes.