X2. A no.481988 or earlier 979xxxx 400 block and stroker kit is a great way to get big cubes from a Poncho V-8. Add 320+ cfm ported aluminum heads and a roller cam to a 400/461 stroker and 600 hp/600 lb.-ft. on pump gas is typical. Poncho engines are also known for torque, so that 600 lb.ft. comes in early, around 2500 rpm depending on the cam. Even the 350P can be stroked with a 4.00" crank, 6.8 BBC rods and custom pistons, but the smaller bore of the 350P limit it's HP potential- the best build for the money in terms of HP is the 400/461 combo.
If you can find a 455 block, don't ignore those either- they have a larger 3.25" main journal, but are still in high demand because they can also handle 600 hp and come stock with a 4.21" stroke crank. The 400/461 stroker combo does have less friction thanks to it's 3.00" mains, but there are plenty of them out there built that make similar power to any 461.
Geno
Last edited by 72blackbird; 05-13-2014 at 03:35 PM.
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