Shawn40th said:One of the newer crazes on the PI engine swaps is the 2002 Explorere 4.6 engine swap. For some reason, only in 02 the explorer got a all aluminum block instead of all the other 4.6 SOHC engines out there that have the cast iron block. The Cobra was the only engine to have a aluminum one before that.
So you are say Only the '02 got an all aluminum block, not '03 or '04 ??
Another way to go is to get a '96-'97 intake manifold and Renegade PnP NPI heads and PI cams. It's a lot easier and, depending on what parts you put in the heads, probably cheaper.Shawn40th said:One of the newer crazes on the PI engine swaps ...
Why does it have to be "Renegade" heads? How much do they charge to get that killer flow? I'm planning on getting some ported locally.96 GoldBird said:Another way to go is to get a '96-'97 intake manifold and Renegade PnP NPI heads and PI cams. It's a lot easier and, depending on what parts you put in the heads, probably cheaper.
Impressive, but what would it take to get into the low 13's and high 12's naturally aspirated? Ported NPI and PI heads still don't flow worth a shiite compared to even stock 1960's Chevy heads from the factory. I wanted to get these "SVO" heads that someone here was using, but then I saw the dammmmm price. :beek:As for results, I've got a friend down here with a PI bird (non-PnP).. all our other mods are pretty much equal... I'm running high 13's and he's low 14's...
Where do you get SVO intakes in the first place? Do you have a part number?Soon my buddy's going extrude-honed Bullitt intake and I'm going PnP SVO, so the battle will continue on another level....
That's the route I'm following, don't know if that will change later though.I didn't have to do the engine swap thing, just bolt ons...
And if SC is the next step, lower compression is your friend.
Thanks for the info. Great post! :thumbsup:
In the case of the '94-'95's a real cheap way to get 20rwhp is to pick up a pair of stock '96-'98 heads (probably under $100) and a '96-'97 t-bird upgraded, aluminum crossover, intake manifold (cheap) and bolt em on.......
Renegade has been working on and refining the flow numbers on our NPI heads for quite awhile and has it down... He does other heads, also, but he went on a mission with the NPI's to get the most out of them, and succeeded. For current prices you would have to check with him. It may have changed since he did mine. My understanding is that parts prices went up.4point6r0x0rz said:Why does it have to be "Renegade" heads? How much do they charge to get that killer flow?
I can't tell you yet, but hopefully in a month or so, I'll know. I can tell you that track times are not just hp and tq dependent. Drivetrain, tires, weather, etc. play a big part.what would it take to get into the low 13's and high 12's naturally aspirated?
Check with Renegade, I don't have the numbers off-hand.SOOOO, can I get bigger valves in the '96-'97 heads? What size?
I plan on using a Comp Cam, preferably one with .550" lift.
Pehaps that is true, but not the way Jim set mine up... max for me is .525".. At the time, I was putting stock Ford PI cams in, so the "extra" lift was not necessary.. If you make him aware that is what you want, he may be able to accommodate.JoeyICU said:i tohught the 96-97 npi heads could handle the .550 lift?
Here is the Comp Cams page for the mod motors:96 GoldBird said:In their product description Compcams makes it very clear that the .550" lift is for the PI heads. The fine print explains that accommodations have to be made for NPI's.
*Note: Can also be used in the Pre 99 (P.I.) Heads with retainer to guide clearance modifications and Comp Cams® valve springs.