4.0L HO Jeep Engine Build

Joe the more I think of it it can't affect ignition timing cause the ign. timing is controlled by the crank position sensor. But like you said it most likely will affect the dist. phasing if the dist. is driven off the cam. I think that's the only thing you'd have to worry about. After looking at the cam specs the cam your using is quite a bit bigger so I bet it won't make nearly as much low end cyl. pressure as the other cam so advancing it would help the low end torque. If you can only figure out a way to adjust the dist. phasing I think you'll be fine.

Thanks Fishy. I think I'll order that offset bushing kit today.

I wish I knew more how these new computer things worked. The thing I don't know is how the cam position sensor in the dist. works. How does the information it sends to the computer affect things??? Would it sense the cam being advanced and modify the ignition pulse signal so the phasing would be corrected??? I just don't know.

Me either, I've got some research to do. This is new ground for me too but it should be something we should all know anyway so I'll figure it out. I love a mystery anyway. :-D

BTW: The Torino sounds like it was a ton of fun. What intake did you have to use with the 400M block with Cleveland heads? And a Fireball cam!! Man I haven't seen them advertised in yrs. I had a Crane Blazer in my old 72 Pontiac 400. If you remember the Blazer was the milder cam and the Fireball was the big dog. And if you buzzed from Carbondale to Chicago you went within 3 miles of me. I'm just off of I-55 about 3 miles. Them were some crazy days.

Holley made a Street Dominator for the 400M and it bolted right up. The only issue would have been if I had used the 4V Cleveland head as no one made a manifold for that due to the port size but spacers were availible to mount 351C manifolds on the 400M that I assume could have been machined to the correct port size. As you already know, this was back in the pre-internet days and research had to be done via the library, lol. That Fireball was a bad *** cam. I also used a Crane roller rocker stud mount retro-fit kit that went 40-45K miles with zero problems. I bet I still have pics of that engine and Torino somewhere.... I'll post a pic if I can find them. That Torino really did handle well at speed. Better than any car I ever owned. I can understand why they were used in NASCAR racing.

I must've blasted right by your place! :-D Things were quite a bit cooler then compared to now. 8) That highway was empty at the time and I was behind a guy in a mid-70's Riviera who was cruising at about 110. After about 20 miles I thought I'd see if he wanted to go, but he was just making time and waved me ahead. :) It was my own short version of "Vanishing Point" without the drugs, lol. I don't know if it was the Grace of God, but I never saw a single cop until I got close to Chi town. 8) BTW I would never, ever do that again and please all, don't try this at home or you'll end up on the news. :toothy10: