Bluetop Engine Rebuild multiple question Goal 150-160hp

[Hanzo]

(04-12-2021 05:56 PM)oldeskewltoy Wrote:  

(04-11-2021 08:11 PM)Hanzo Wrote:  

(04-11-2021 05:28 AM)oldeskewltoy Wrote:  Can you get to 150whp with a 4AGE, the answer is no problem, although the largeport intake manifold does become a challenge around 145-150whp. I'm making 145whp in my smallport* using Euro 10:1 pistons - but the head has been extensively worked - chambers now down to about 33cc, so compression is closer to 10.7:1 (* - smallport head and block, with a 40mm crank, rods, and 10:1 pistons) I'm using a mild cam Web camshafts 577 grind - equivalent to a 264 type, using 8.38mm lift. I've kept the smallport intake manifold (single T/B)

Thanks for clearifing that, i meant 150-160hp at the crank.
Which is more like 120-130whp. 150 whp would be fantastic, but i think this will lead to lot more upgrades down the road (like brakes, cooling etc.) I already have a "fast" car so the Levin doesn't need to fulfil that role.^^

For 120whp all you really need is a properly ported head, and about 10.5:1 compression. This is a largeport using smallport pistons, and a ported head. As far as manifolds - I kept the stock bigport intake, exhaust manifolds, and it retained stock engine management.


Video of pull here


The extra 10hp can come from a mild cam(256 type) upgrade.

It seems that a ported head does make a large difference. It also clearly visible that the TVIS is working. There is quite a dent at 4500U/min.^^
My idea was that ported head is useful if i want to add ITBs later down the road. I only want to build that engine once .