[ToxicJon]

Hey guys I haven’t seen anyone post results of the real difference between a well ported lt2 and ported msd. To start out I made the thread for what all is needed to put the lt2 on these cars and the power difference. So now in the name of r&d and the prospect of more power I thought I’d go ahead and see if the msd could make a decent power jump over the lt2. Well ordered up a new msd and really took my time porting it working on the floor of the runner a good bit(more willing to try things a little different on my personal stuff than a customers) to try and get a better line of sight to the valve.

Well strapped the car to the dyno and made a pull immediately yanked the lt2 swapped my ported 95mm and sensors over and bolted it down. Took roughly 30-45min to get it swapped. Got it back up to temp and made a rip. Pretty happy with the results. Made roughly 7-8 rwhp peak to peak and around 15rwhp 6k+.
What I’m most surprised and I guess I attribute it to the attention to the port job was that it made more power and torque basically through the whole pull. Usually the msd is a little soft down low. Tune didn’t need any changes afr was still dead on.
I believe I’m going to order a 103mm Tb and do another back to back and see if it makes a few more hp.

2019 camaro ss a10 Mods are ported msd, ported 95tb, rotofab dry, 2in se headers, e85, ati 10% ud, tuned by yours truly.

[NA18CamaroSS]

Nice comparison. Thanks for the hard work.

[Blackmonba6Gen]

Great comparison. I’m still impressed with how well the LT2 performed compared to the MSD.

[Heatseeker8]

Nice job . 15+ you will notice
Seems most shops push the ported msd vs ported lt2.
Thanks for showing the results

[Redlinez]

I reckon $1000 (difference in MSD pricing vs LT2)for 15 plus hp past 6k is worth it for folks who are racing or beating theirs all the time any day of the week. Thinking I will stick with my LT2, just wondering if having it ported is worth $350.

[Heatseeker8]

It’s 700 difference by the way
800 portedLt2 from gpi
1500 ported msd from gpi.

[LT1ornothing]

Originally Posted by ToxicJon

Hey guys I haven’t seen anyone post results of the real difference between a well ported lt2 and ported msd. To start out I made the thread for what all is needed to put the lt2 on these cars and the power difference. So now in the name of r&d and the prospect of more power I thought I’d go ahead and see if the msd could make a decent power jump over the lt2. Well ordered up a new msd and really took my time porting it working on the floor of the runner a good bit(more willing to try things a little different on my personal stuff than a customers) to try and get a better line of sight to the valve.

Well strapped the car to the dyno and made a pull immediately yanked the lt2 swapped my ported 95mm and sensors over and bolted it down. Took roughly 30-45min to get it swapped. Got it back up to temp and made a rip. Pretty happy with the results. Made roughly 7-8 rwhp peak to peak and around 15rwhp 6k+.
What I’m most surprised and I guess I attribute it to the attention to the port job was that it made more power and torque basically through the whole pull. Usually the msd is a little soft down low. Tune didn’t need any changes afr was still dead on.
I believe I’m going to order a 103mm Tb and do another back to back and see if it makes a few more hp.

2019 camaro ss a10 Mods are ported msd, ported 95tb, rotofab dry, 2in se headers, e85, ati 10% ud, tuned by yours truly.

Excellent results for a few bolt ons, must pull like a beast. Are you thinking ported heads and cam soon? Also, thank you for showing the lt2 vs msd comparison, very insightful.

[17MaroSS]

I love hearing about comparisons like this done right. Well done sir. What's the name of your shop/company?

Just curious: What kind of dyno and what % ethanol?

[weemus]

Thanks for the info!

[ToxicJon]

Originally Posted by NA18CamaroSS

Nice comparison. Thanks for the hard work.

Oh yea man no prob

Originally Posted by Blackmonba6Gen

Great comparison. I’m still impressed with how well the LT2 performed compared to the MSD.

Lt2 is definitely best bang for the buck. If your not going for every last bit of hp with a plastic intake lt2 is killer.

Originally Posted by Heatseeker8

Nice job . 15+ you will notice
Seems most shops push the ported msd vs ported lt2.
Thanks for showing the results

Yea the shorter runner of the msd just gives that little bit more of top end pull.

Originally Posted by Redlinez

I reckon $1000 (difference in MSD pricing vs LT2)for 15 plus hp past 6k is worth it for folks who are racing or beating theirs all the time any day of the week. Thinking I will stick with my LT2, just wondering if having it ported is worth $350.

Porting is always best. On the lt2 most of the gain is from porting the Tb inlet.

Originally Posted by 1LEornothing

Excellent results for a few bolt ons, must pull like a beast. Are you thinking ported heads and cam soon? Also, thank you for showing the lt2 vs msd comparison, very insightful.

Car is very strong. No plans for cam or heads this car is a max effort bolt on car. It will probably stay that way.

Originally Posted by 17MaroSS

I love hearing about comparisons like this done right. Well done sir. What's the name of your shop/company?

Just curious: What kind of dyno and what % ethanol?

I’m a small shop in Mississippi. Max effort tuning. It’s a dynomite dyno. I believe those were 78% e.

Originally Posted by weemus

Thanks for the info!

No prob

[Redlinez]

So a little less difference, but still $700 for those peak HP, which does matter if you're drag racing a lot. Probably worth the difference.

[Joey Soul]

Gpi did this test on a youtube video I believe a few months ago, but its always good to hear results from a private party.

[ToxicJon]

Originally Posted by Redlinez

So a little less difference, but still $700 for those peak HP, which does matter if you're drag racing a lot. Probably worth the difference.

It’s worth roughly 1mph over lt2.

Originally Posted by Joey Soul

Gpi did this test on a youtube video I believe a few months ago, but its always good to hear results from a private party.

Yea good thing about having a small shop I don’t have too rush anything.

[Redlinez]

Dang, I would save the money. 1 mph can be a weather variance or shifting inconsistencies, or spinning.