Debating on ported heads or aftermarket heads
#1
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Debating on ported heads or aftermarket heads
So my 99 ss has bonestock internals with 853 heads. I'm debating on two setups. One with ported 853 heads with a cam (trex,ms3,ms4) or just getting some heads from TSP with one of those cams. I'm just kinda on a budget.
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Personally, I would go with the PRC stage 1 ls6 heads with their cam kit. They will flow better than ported 853's and it will all be new. If you're really tight on a budget, grab some 243's and just get them touched up. I figured the money I saved would be going toward the rear end, which is just a time bomb now.
#4
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I'm a fan of porting stock heads, but in this case your most cost effective option is probably to buy ported 706's or 243's from TSP. If you had a casting like a 799,243 or even a 706 I'd say send it to one of the porters, but I'm not a fan of the older castings like the 806 or 853. I would stick towards the smaller of the cams you discussed for mainly a street car, I think you'll be happier with the bottom end, those are all large cams. You may save a little coin buying it as a head/cam package deal from TSP.
#5
don't do budget with a hi-rpm race cam.you will need comp cam trunnion bearings for your rockers.you will need good springs ,harden push rods ,and a new timing chain.valve train geomentry is important with a hi-rpm cam.you will need a hi-rpm stall ,or a good clutch.get a cam that works with your whole combo.ported heads with a big cam will need bigger injectors .you will need a new tune .