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Ok which is the better block the sbc 400 or the sbc 350 or a 350 block with a 400 crank ? Intrested to know the good and the bad points for each block, thanks, |
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No idea really, but as a 350 is legally allowed in an HQ without having to be engineered, that would be my pick.
I've seen a few 350's made into 400's and they are pretty amazing engines, with unbelieveable performance.
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As far a GM manufactured equipment is concerned, the 350 blocks were the high performance stuff as the 400 was used mainly in trucks and BIG Brady bunch style station wagons and only ever came as a cast crank low hp engine. There are always stories gettin |
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It's very much horses for courses. My HQ ute was built up and certed (by someone else) as a strip weapon. 400 chev was originally running Dart heads, roller rockers, monster lift / duration cam, nitrous, 15x15 rear tyres on narrowed ford 9". Great for |
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Does anyone know the limit of the cast cranks in a 400 chev??
I am considering the same type of bottom end transplant.
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Don't bother with a 400 crank. Talk to Eagle or SSS in Sydney, and you can buy a new nodular iron 3.75 inch stroke crank with the journals all at STD size for a 350, for around $350 or less. It will cost you well over $200 to resize a 400 crank. The same |
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i have a 400ci in my monaro,runs very well with some ****ty cast iron heads,5.7 rod and 400 crank,it was put together by the guy i brought the car from about 3yrs ago,i have done a 13.001 1/4 mile.so if i were to put some better heads it would go stronger
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mmmmmmmmm, I realy dont know which way to jump as yet. I have a 400 4bolt smog heads, was rebuild with molly rings, running straight gas and sits in my K20 chev truck. It is used mainly for towing the car trailer around and I noticed the other day she is |
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400 heads are the same as 350, just have the steam holes drilled. The smoke is probably the valve guides. I had a 350 in a HJ ute which I put LPG on after buying it. It was almost perfect in bore and crank (hone and linish only) when pulled apart a few we |
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Thanks Byron, if you were to stick a set of heads on what would you go for? Are the smogs better for gas or would a set of fuelies or darts do up better? ( havens checked casting number yet or lifted the head to have a look to see what size shes bored to |
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The best factory heads are the 292 slant plug 'turbo' heads. These are serious bolt on HP, just like VN heads on an early block. These are very hard to find nowadays (I'm actually looking for one to replace a failed LPG insert job). They are characterised |
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quote:
Originally posted by witcheshollow racing team
mmmmmmmmm, Byron is also right about the after market cranks, cheaper an |
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