Richard Holdener does a l67


Bru

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At first glance I thought I read Richard Holdener dies, and I was like, 2020!



But this is cool. He's played with M90s on some other videos. His video editing and storytelling needs some work, but I generally feel the testing is methodical and he's honest with viewers on what worked/didn't work.
 
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GTPpower

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Yeah, hopefully he gets some big numbers from the 3800 before it pops.
 

v6buicks

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I feel like it would be interesting to see the results of M90 power (gotta get the baseline anyway), twin charging because why not if hes making an L67 turbo kit, and then turbo through the empty blower case. I know there are some strong opinions about all of this, but somebody like Richard with Westech could really quantify it and put it to bed. I doubt he'd waste the time with the twin charging though. His videos already seem way too long at times. lol
 
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GTPpower

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Yeah, just going off of what was written on Facebook, I doubt he wants to do all that.
 

TurboTPI

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I offered him to use my zzp ported Gen3 blower and all my pulleys (3.4, 3.2 2.8), but he said he wants a Gen5 blower. I really hope he actually does a big turbo "big bang" on one! I like the guy, seems like a cool guy. Ive been harassing him about doing a 3800 big bang for months now, he always replies and says he's going to haha
 

Bru

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I added a similar request to the 3800 Instagram post.
 

Bru

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Nice. I know it’s been a while but I always felt like the horsepower claims came from the big vendors and not any independent back to back tests. Perhaps I wasn’t paying enough attention. Also, these cars seem to dyno pretty low compared with how fast they run.
 

Ron Vogel

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Nice. I know it’s been a while but I always felt like the horsepower claims came from the big vendors and not any independent back to back tests. Perhaps I wasn’t paying enough attention. Also, these cars seem to dyno pretty low compared with how fast they run.
Yeah, they don’t dyno right. Pretty much have to use the mph vs weight to get HP
 
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GTPpower

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I guess I've never noticed them not dynoing correctly. My numbers always seemed to match up with what it should be making.


But yeah, I've always been very disappointed with every gtp I've put headers on. It bugs me that lots of people recommend them for the first mod, especially when the crappy eBay brands make them unreliable.
 

Ron Vogel

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The primaries are too big on them, and the crossover thing is less than optimal. I didn’t see good gains from headers until I was trapping 104-105. I bought a second hand set of S&S that were already Jet hot coated. Not a popular opinion, but I think they were the best laid out headers for the platform. I installed a lot of headers for people too.
 
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GTPpower

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I agree. S&s were the best we could get.

The bad part with all headers offered is that none were anywhere close to equal length, and due to our firing order and cam duration, we have no chance at any scavenging taking place.
 

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