2 valve vs 4 valve
- Thread starter bhuff30
- Start date
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..... wait... 
That is a perfect assessment!so my 2v has more street potential than a 4v? And 4v will be a better bet if you want something like a race track car? thats interesting. theres a lot of good info flying in this argument, please keep arguing
Stan Weiss
Member
so my 2v has more street potential than a 4v? And 4v will be a better bet if you want something like a race track car? thats interesting. theres a lot of good info flying in this argument, please keep arguing
NO! That is not what I said. The 4v can make more HP but will not be as drive able. Some of us live in large city's and yes anything can be driven on the street. I drove my SBC with roller cam, and 5.86:1 rear on the street back in the '70s.
What is the most power anyone has seen out of a 5 liter (or very close) N/A two valve? I am very curious as I haven't a clue. The most I have seen out of a bored over Teksid block with 03/04 Cobra heads N/A and 5 liter size was 471 hp, I would bet there is a higher one out there but that was a Sean Highland built one. 
well i get the part that anything can be driven on the street but there are some rides out there that wouldnt make sense to drive everyday. i see alot of trailer queens at the track that wouldnt make sense to have sitting at a stoplight in the city.
That's not bad, but also keep in mind that basically stock, the 4v wins out. The 2v doesn't win out until you start with head porting, cams and more compression.
so my 2v has more street potential than a 4v? And 4v will be a better bet if you want something like a race track car? thats interesting. theres a lot of good info flying in this argument, please keep arguing
mustang50v8
Member
What is the most power anyone has seen out of a 5 liter (or very close) N/A two valve? I am very curious as I haven't a clue. The most I have seen out of a bored over Teksid block with 03/04 Cobra heads N/A and 5 liter size was 471 hp, I would bet there is a higher one out there but that was a Sean Highland built one.
what is natzy from SVTP running in his car? i know he is all NA but i dont remember his CI's or HP
billfisher
Active Member
If you are building an all out race engine the 4 v setup will be better. But if you are building a daily driver performance engine you are better off going the 2v routine.
Bill your head port charges the same to do all that extra work that 4v's require? Double the amount of valve seats, valve bowls and a divider wall.
touche` STAN.
oh and 322-330 cu.in 4v's making 500+ rwhp are common.(in racing circles)
and there are NO 400RWHP 2V'S IN THE ENTIRE WORLD.
billfisher
Active Member
roughly 200rwhp more than a 2v.
i know this is apples to whatever, but its the 2v guys saying'my ported 2v will outpower a 4v', not me.
i started out as a die hard 5.0 guy, then a PI2v, then a 3v, and now a 4v. top of the food chain.
1991notchbackLX
Active Member
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Brian,
This car did this almost 3 years ago. A lot can change in 3 years. IE, that member's Modular Depot account is now considered a Guest account which you can't search posts by user name of guest accounts. The best I can do right now is someone 2.5 years ago mentioning how he achieved 428 RWHP.
ModularFords.com - View Single Post - 400rwhp NA?
