[shaker455]

Originally Posted by JLMounce

Specifically 455 based. Can it be done and made durable?

The car would be a street car that also sees HPDE and possible time trials. So I'm not looking at anything incredibly exotic, but something that isn't going to puke it guts all over the track after a 20 minute high rpm session.

I've already got the 455 in the car, built by the previous owner, so I know very little about it.

XJ code 455, probably .030 over, #62's, P4B, Speed Pro Pistons. Outside of that I couldn't tell you what cam is in it, or what the bottom end components look like. I would assume it probably has forged rods, quality hardware and probably a stock crank.

I'd like to make around 500-550 hp with a powerband between 3000-6500. Moving the upper RPM limit up to 7000rpm would be ideal, but considering this is a hobby car and not something I'd be competing for every last .10th, not necessary. My main concern is having something that will survive the extended periods of high rpm use.

Can I retain the 455 I have and make necessary changes, or would I be better off going down to a block that has a 3" main?

To make the power I'm looking for, I'd be using a set of aluminum d ports, more than likely KRE.

I live in Colorado where we have significant altitude changes over short distances, so I'll be fueling with EFI of some sort. More than likely a Holley HP kit utilizing an Edelbrock Victor EFI (TII).

Thoughts? Advise?

Thanks in advance

Keep the engine isolated from the chasis.