So Frustrated!

fishy68 said

Sorry I didn't elaborate much when I said they weren't different. What I meant was I have read posts (been a while) that guys claim the bolt pattern is slightly different so you need adapters to bolt them up, which I'm sure you know isn't true. I didn't realize that about TTI's. I have a set of Hooker's and Dougs and while the Doug's ports are a little smaller than Hooker's it's not enough ot hang over LA ports. Thanks for noting that about TTI's

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Yes bolt patterns the same but outer ports at all four corners slightly different between LA and Magnum. The TTIs hang about 1/8" into the LA port on the lower outside edge at all four corners. And on an LA head the sealer surface is very thin there cause the headers don't match the LA ports. But since its the lower outer edge performance loss not huge just annoying to have fully ported heads and $700 headers that restrict flow.

Grab that '89 engine. And for the ones you can't hear run have them pull the heads so you can look at the cylinders. The words of people you don't know should not be taken at face value. 50-60k mile engines should have cylinder walls that still look fresh with no lip at the top other than some carbon.