Summer mods Monoblade and stepped headers
#1
Summer mods Monoblade and stepped headers
Hey fellas, I don’t post much on this website but thought this would interest the LT guys. Since I don’t enjoy driving the car during the summer months, I figured park it get some upgrades done. Finally ordered my soo wanted Tpis monoblade, should help on the big end. Hooker 1 3/4” LTs got replaced with 1 3/4” to 1 7/8” stepped headers and an LS front brake swap Hawk HP pads new rotors should help stopping distances. Had to mod the x pipe a little to make the exhaust work.
Quick info
97 Camaro
396ci
6 speed
4.10s
478rwhp
Quick info
97 Camaro
396ci
6 speed
4.10s
478rwhp
#2
TECH Apprentice
Should be a nice gain. What kind of air intake setup are you running. I have a very similar combo as you just more cam, more compression, less cube 383 and e85. My TorqueHead LS pcm conversion is going on in a week. Then she will be ready to eat.
#4
11 Second Club
iTrader: (35)
Out of curiosity, why the stepped headers instead of straight 1-7/8"? I'd just imagine the straight 1-7/8" would work better on the top end on a high hp 396 like yours if you drag race or street race the car. I put some Kooks stepped headers on a car once and have been thinking about doing the same with my stock bottom end LT1 since 1-7/8" are a little big for my combo. That monoblade is a beautiful piece, I've been thinking of going with one of those eventually as well. LS1 front brakes are a great cheap mod that everyone with an LT1 should do IMO, stock LT1 front brakes are scary lol. If you plan on putting your car on the dyno please share your gains, would love to see them.
#5
Yea....1 7/8” straight long tubes is what I want but not willing to spend 2 grand for a custom set. I picked up these XS power headers for $100 couldn’t pass on that deal. I made the exhaust system from a universal summit X pipe kit. I’ll be back on the dyno this winter....I’ll definitely post results. Here’s a vid of the last dyno
#6
12 Second Club
iTrader: (22)
ohhhh that mono is sexy. I went with the same header choice on my 355 car. I was however unimpressed at the velocity merge, I measured it and it necked down to almost 2.25 on one header and about 2.5 on the other. I understand the flow dynamics but it seemed drastic and gave the exhaust an odd tone to be honest. I plan to pull them back off and weld on a new merge section that will hopefully flow better, and then get them coated.
I'm sure you'll still gain power overall though with the combination of the two mods. love the 396. For the longest time I thought I'd LS swap mine, but I am leaning hard on keeping it LT and just building a motor and possibly boosting it. Goodluck!
I'm sure you'll still gain power overall though with the combination of the two mods. love the 396. For the longest time I thought I'd LS swap mine, but I am leaning hard on keeping it LT and just building a motor and possibly boosting it. Goodluck!
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#12
11 Second Club
iTrader: (35)
Don't want to burst your bubble but remember all motors are different and yours may see some gains, but a customer had a 10 sec LT automatic, first installed stepped headers, No gain in torque or horsepower, then he installed a monoblade, sam results, this was on a 383.
#13
TECH Apprentice
Don't want to burst your bubble but remember all motors are different and yours may see some gains, but a customer had a 10 sec LT automatic, first installed stepped headers, No gain in torque or horsepower, then he installed a monoblade, sam results, this was on a 383.
#15
It’s finally all back together....ported the manifold for the monoblade, installed the new headers, some E3 spark plugs....took her for a quick hit around the block....definitely passes the seat of the pants test
#17
TECH Apprentice
If you had logging software you could have logged your lb/min maf reading and (g/cyl) air mass before and after. Good way to see if you’re moving more air.
I was pleasantly surprised this weekend to see my MAF flowing 67 lb/min with dialed in VE tables and very lean AFR up around 7krpm. Mine is out of fuel. Going to order some 60lb injectors to give it more fuel on e85.
I was pleasantly surprised this weekend to see my MAF flowing 67 lb/min with dialed in VE tables and very lean AFR up around 7krpm. Mine is out of fuel. Going to order some 60lb injectors to give it more fuel on e85.