Give me feedback on engine/power adder options

[hweb30]

I'm planning my new engine build this winter and I'm just looking for opinions on what direction to go. The car is 90% street, I could go either way on keeping it manual or going auto, and I can't decide which direction to go with the power adder or engine. Hopefully some light can be shed on pricing and results. FYI I will run E85 and meth.

What i'm currently looking at

-99/00 Lightning engine swap with 2v heads
-built block with turbo/F1a and 98 cobra c heads
-5.4 block with kenne bell 2.1 and 98 cobra b heads (would spin up to 15lbs.)

Any other opinions are welcome, as of now I'm just looking for new ideas in a direction I could go. Btw this is all going in a 98 Cobra.

 

[Chances50]

Big bore stroker shortblock, 03/04 4v heads, 99/01 Cobra ported intake, custom cams and f1a. that would be a wicked setup. But not very cheap.lol

But out of the options you listed build the stock shortblock and put a turbo kit on it. ALOT simpler than messing with a 5.4 swap and would make ALOT more power than a 2V 5.4 would.

 

[pacific4v]

First off 98 cobras have b heads, not c heads. Secondly if your running e85 there shouldn't be any need to run meth as well. In fact Im almost 100% sure you don't want to mix meth with e85.

What car are u building?

Either way if your for sure running e85 then take full advantage of it and build a high compression, boosted motor. Look at my Sig. I have stock heads, cams, and intake(with imrc deletes) and should be close to 600rwhp with a little s-trim making around 11-13psi once i get my maf problem fixed. Just do plenty of research on what's needed to run e85 on a car making 600rwhp+

 

[02blownGT]

Built bottom end, high comp if using E85,Turbo,Auto with a manual valve body,Size of the motor doesnt matter as long as the top end breathes good.Will be a blast on the street and dangerous at the strip.

 

[hweb30]

How high compression is "to high compression" with forced induction?

 

[pacific4v]

How high compression is "to high compression" with forced induction?

Just depends on what fuel ur using, if its intercooled, meth inj, how much boost, etc. My motor is just a hair over 11:1 compression and runs great on 10psi and e85.

 

[hweb30]

Just depends on what fuel ur using, if its intercooled, meth inj, how much boost, etc. My motor is just a hair over 11:1 compression and runs great on 10psi and e85.

Already said I was running e85 and meth. Just curious if I could get away at 14:1 comp, and 10 pounds boost.

 

[JP_Stang]

14:1 compression, in my opinion, is way too high. Even with E85 I wouldn't go over much more than 11:1.

 

[pacific4v]

yea I wouldn't venture much higher than 11:1. Flat top pistons with stock stroke shoud net around 10.5:1, which would still make really good power with low boost. 14:1 and 10psi would make for a beast.