Grimm Speed ported/coated stock manifolds

[Batman]

I must say I pleasantly surprised at just how good these came out. The only possible complaint I could put forth is on the front primaries just where the flange turns down there are some rough spots but looking at it I see no real way to get to that spot to polish it down. The rest came out great, he had extra coating so he even did heat shields, kinda strange but I think they look good. Also pulled out all the studs and cleaned them, cleaned all the bolts that hold on the heat shields and even returned the gasket I sent for the port matching, he even cleaned and tapped all the threads on the manifolds. I definitely give them 2 thumbs up for this work.

http://i36.photobucket.com/albums/e28/nickbrehm/DSCN1551.jpg
http://i36.photobucket.com/albums/e28/nickbrehm/DSCN1552.jpg
http://i36.photobucket.com/albums/e28/nickbrehm/DSCN1553.jpg
http://i36.photobucket.com/albums/e28/nickbrehm/DSCN1554.jpg

[c4boom]

ok i have to ask how much did that cost vs just getting a set of 50 state mids

[Batman]

ok i have to ask how much did that cost vs just getting a set of 50 state mids

It was $425 including shipping (so about $390.00 for the cleaning, port, polish and coating). It was a little bit more because they had no background with LSX manifolds, if he does a few more it should bring the price down. Not much less then a set of shorties but less. This coating is ridiculously durable too. Waiting to see how they flow before I pass final judgment so we'll see.

[c4boom]

i would rather go with those than shorties.

[Batman]

I think they came out great, and they are precisely matched to the gaskets now, nicely taper in to a smooth transition and IMO look great (not big into flash). There are cheaper shorties out there but they are mostly chromed pieces of shit. Supposedly this coating is supposed to drop the temp about 100 degrees at the manifold and 60+ under the hood too. I am still mostly impressed with the attention to detail, very professional job.

[My84Z]

those would be perfect to flip forward for a sick turbo setup!

[*LS1* Queen]

those came out great! and i agree with John haha

[ILuvPizzaTimes10]

Look Greatttt and why again are you doing this??? emissions?? dont you guy have the same law we do if you spend X amount of money a car to pass emissions and it still wont its exempt forever after that. and you can pretty much do what you want?

[Batman]

Look Greatttt and why again are you doing this??? emissions?? dont you guy have the same law we do if you spend X amount of money a car to pass emissions and it still wont its exempt forever after that. and you can pretty much do what you want?

Ours is $400.00 in repairs per year to get it waived. I am also big on being different and testing things. But I am also leaning more toward the street side of the car now, I don't have the time or money to race it anymore and I am sick of the noise on long road trips so I am also hoping this will quiet it down some. Plus I can make some $$$$ on the longtubes.... :).

[ILuvPizzaTimes10]

so why dont you just go back to cam only? sell the entire engine and get a low miles short block and drive it?

[Batman]

Too much work, and I'd never come close to getting my money back, then I have to buy and build another cam only engine, no thanks. I'm sure it will run just fine the way I am setting it up. I don't think it is going to lose anywhere near as much power as you guys do. I'm going to hang on to the headers for awhile and if it sucks I'll put the headers back on. But I am sure it is going to be just fine

[ILuvPizzaTimes10]

i cant wait to see what happens. i dont think they would boast about headers as much as they do and advertise such performance gains if there not a Significant difference over even polished manifolds. i really cannt see it making the same power.

[no1kicker]

Those look very nice. I've never heard of LS1 manifolds being ported, I'm curious how they perform.

[Batman]

i cant wait to see what happens. i dont think they would boast about headers as much as they do and advertise such performance gains if there not a Significant difference over even polished manifolds. i really cannt see it making the same power.

Yeah no company would EVER exaggerate their statistics to make money. I am sure it is going to lose out on the top end by maybe 20HP, but I bet midrange will be about equal and the manifolds will put out more on the low end.