SP3 install

Justin,

I sent you a reply to your PM. I have been waiting on this intake for quite a while. I believe my heads will appreciate the increased airflow. I have a feeling some rejetting of the carb may be in order but I need to get the intake in my hands first. Thanks for creating this thread it has got me motivated to work on my Buick!

 

I'm glad to see my initial thoughts were accurate on this. Maintaining long narrow runners is the key to this. The Buick 350's tall, narrow intake ports is its 'secret weapon'*. The intake itself accentuates this by taking advantage of the '2in1' runner design. Very exciting information!

*As I've said before on many other occasions, narrow ports maintain velocity while making them tall adds volume to the runner, creating two positive effects in one runner without the negative effects of either design (small vs large, or velocity vs flow). This effect permits the engine to run a carburetor considerably larger than what would normally be considered 'enough' for its displacement.
When used with the Quadrajet (the "Sissy" alternative), which would accentuate this effect even further with the high velocity primaries and the very deep well of air/fuel potential the secondaries can provide, giving excellent low end, mid range, and top end power (essentially a wider powerband), making for an impressive 'street' setup.

Now for the small primary tube shorty headers.

Gary

 

I am glad this thread can be resourceful, and I appreciate all of the responses!

I put on the cars work shoes (m/t et streets) tonight and gave her a once over. I think my secondary air valve could use some slight tweaking, but in an effort not to mess anything up I'll save that for a later date. A timing double check is also in order.

Drove the car all day yesterday to try and shake out any bugs, so far so good. It looks like everything is set for tomorrow's test and tune, with any luck I can report back tomorrow evening with some positive results from the track.

 

Thanks for your reply and input, and glad the thread got you motivated to work on your ride!

Gary,

Thanks for the further explanation, I have just been street driving so far but there was a positive effect after the swap at all rpms.

 

Go get 'em:grin: Cant wait to hear the results!!

 

I am looking forward to Justin's result as well.

 

Its thursday .. what'd it run ? p

 

Yeah, its already 6:03 am Thursday, half the morning is gone, what did it run?

 

Its 6:04 now, any numbers WTHuzzled:

 

Yeah I'll give that a giant X2 hahaha

I did actually! A long stretch but they call it dreaming for a reason!

 

Talked with Tim @TA yesterday and looks like it's going to be a while yet for the next batch of SP3's. They are always working on 455 stuff..

You going to try a big dbl. pumper if you don't get that 12.99?:Brow:

 

roflmao!!

 

After they machined for my "sissy carb", my machine shop offered to loan me a big ol Holly to try and sway me haha. Maybe one day I'll call them on their offer and see if it holds!

 

i think you will find a difference using a d/p holley also. may be a bit faster.

 

I'm not against giving it a try, I'm sure curiosity will catch up to me one day enough to pursue it.

Or I can be like Larry and have a quick change set up and use both at will.

Options are fun!

Ps Mark.. I know it's 2:01. Still no times yet haha.

 

I spoke with Mike and he said machining was occurring next week. But this was two days ago. Either way mine is on order.

 

We just have to wait it out Phil.
How's that super duper Quick fuel working for you on your mouse motor?

 

Off to a good start

 

Some BUICK representation! Nice! :TU:

Go get 'em Justin :3gears: