Author Topic: Next step for the 352.... (Read 4515 times)

blykins · « **on:** March 24, 2021, 06:11:05 AM »

JJ is getting a work out. I've lost track of the number of pulls that we have made, but the next iteration is an intake manifold change.

I have two manifolds to try. I traded for a "NOS" Dove Spyder and I also bought a brand new Blue Thunder MR 8V.

I've got a pair of Holley 600's on the way, so my inclination is to try the BT intake first since it pulled ahead in Jay's intake manifold testing. It seems like all my personal FE's end up with some kind of 2x4 setup on them eventually anyway.

Not sure what this will net me but I'm already pleased with the 352's power, considering it's a factory headed engine with a dual plane intake and compression low enough to run on pump gas. Anyone want to hazard a guess? We are at 465 hp in current form.

After the intake test, I think I'll swap camshafts and sneak up a little on the lobe aggression. The current camshaft has some gentle lobes on it.

After that, it will be time to pull it all back down, and swap some pistons to some higher compression pieces.

shady · « **Reply #1 on:** March 24, 2021, 08:16:32 AM »

68fecyclone · « **Reply #2 on:** March 24, 2021, 09:37:08 AM »

70tp · « **Reply #3 on:** March 24, 2021, 12:16:32 PM »

Stangman · « **Reply #4 on:** March 24, 2021, 12:54:21 PM »

ill go 494
Dont remember what the torque was but i will up that 20 also.
Nothing better than a 2x4 setup especially when its working right.

Dumpling · « **Reply #5 on:** March 24, 2021, 07:15:15 PM »

You're messing with the csm too...

501

stubbie · « **Reply #6 on:** March 24, 2021, 08:21:15 PM »

Joe-JDC · « **Reply #7 on:** March 25, 2021, 04:07:59 PM »

Did you port match the BT 8V? If not, then there may not be much difference in horsepower, but the torque average should improve. Joe-JDC

blykins · « **Reply #8 on:** March 25, 2021, 04:51:17 PM »

Quote from: Joe-JDC on March 25, 2021, 04:07:59 PM

Did you port match the BT 8V? If not, then there may not be much difference in horsepower, but the torque average should improve. Joe-JDC

Joe, interested in your thinking on this. In Jay's test with a stroked 390, an unported BT MR 8V was the third from the top of the pack, with about 517 hp. A port matched/internally ported PI intake was hitting at about 494.

A port matched Dove Spyder was about 505.

Joe-JDC · « **Reply #9 on:** March 25, 2021, 05:08:36 PM »

I went back and checked a couple of stock BT 8V flow figures, and the average is ~368 cfm with one port flowing 325 cfm. If I remember correctly, Jay's heads were Edelbrocks that flowed ~300 cfm at that time. I feel like JJ is actually maximizing the PI-F intake because of the smaller cubic inches, and going to a larger dual plane intake will not improve the horsepower a lot. I hope I can be surprised. I don't want to predict at this point, but I hope I am wrong. The Dove will tell the truth about cubic inches/vs flow. The Dove may be hard to load against the dyno below 5000 rpm. Joe-JDC

MeanGene · « **Reply #10 on:** March 25, 2021, 09:55:25 PM »

You think yours is junky- just lit this old beastie up after sitting for years last Saturday. If it wasn't for testing a customers' 780, she would be 100% stock, 65 352-4V. Sounds pretty throaty, and very responsive

blykins · « **Reply #11 on:** April 13, 2021, 05:33:59 PM »

Got a new Blue Thunder MR 8V intake and some 600's from Drew. Here's where we sit today, ready for the dyno again.

Even if it doesn't make any more horsepower, it sure does look good.

turbohunter · « **Reply #12 on:** April 13, 2021, 06:58:24 PM »

Damn that’s purty.

WConley · « **Reply #13 on:** April 13, 2021, 07:44:47 PM »

Thank you for not having a Fram oil filter on there.

gdaddy01 · « **Reply #14 on:** April 13, 2021, 08:59:19 PM »

that does look good , it may look better in my 62 ranchero .

Stangman · « **Reply #15 on:** April 13, 2021, 09:00:07 PM »

Funny you say that WConley for about 8 years I had the account for a porsche and audi dealer near me from like 1998 to 2006 and I put fram filters on them thinking I was doing the right thing and when they saw it they told me that I cant use framthe manufacturer gives them a hard time if that filter is on a motor that has a problem. I never used them again on any car.

And yes that looks hot Brent and make no mistake it will make more HP.

turbohunter · « **Reply #16 on:** April 14, 2021, 07:18:33 AM »

BTW Drew those carbs are beautiful.

1968galaxie · « **Reply #17 on:** April 14, 2021, 10:03:02 AM »

Beautiful!

Dual four FE's are eye candy. Wonderful to see this testing/playing.
Great job.

hwoods · « **Reply #18 on:** April 14, 2021, 04:35:26 PM »

where is the "Like" button, I thought one was going to be added? But anyway, I like this content.

fryedaddy · « **Reply #19 on:** April 14, 2021, 06:29:35 PM »

four hundred and eighty seven horsepower it will make

urchinhead · « **Reply #20 on:** April 14, 2021, 09:56:26 PM »

Quote from: Stangman on April 13, 2021, 09:00:07 PM

Funny you say that WConley for about 8 years I had the account for a porsche and audi dealer near me from like 1998 to 2006 and I put fram filters on them thinking I was doing the right thing and when they saw it they told me that I cant use framthe manufacturer gives them a hard time if that filter is on a motor that has a problem. I never used them again on any car.

And yes that looks hot Brent and make no mistake it will make more HP.

What filter manufacturer supplies the, “Autolite,” reproduction filters?

cammerfe · « **Reply #21 on:** April 14, 2021, 10:40:32 PM »

Back in the day, a Fram HP1 was as good a spin-on filter as was available. I used D-A Speed Sport oil and the Fram HP1 was recommended. D-A customer service was such that they'd give you a package, free, that had a can inside and a box with their address and postage already on it. You could send in an oil sample and they'd analyze it and send you the results. Didn't cost anything.

KS

Joe-JDC · « **Reply #22 on:** April 15, 2021, 10:08:31 AM »

JJ is looking really good with the BT and fresh carbs. Hopefully it will get you where you want to be at this point of testing. Joe-JDC

Skeeter65 · « **Reply #23 on:** April 15, 2021, 03:10:42 PM »

Looks good Brent. How would a factory 2x4 perform on a 445 stroked 390 for the street? Just weighing options and I have an old friend I went to school with that has one I may be able to talk him out of. Other than that I will likely go with the Performer RPM. And TFS heads if they ever become available. $:-\$

gt350hr · « **Reply #24 on:** April 15, 2021, 03:25:53 PM »

Quote from: WConley on April 13, 2021, 07:44:47 PM

Thank you for not having a Fram oil filter on there.

Brent is WAY smarter than that!

blykins · « **Reply #25 on:** April 15, 2021, 05:58:20 PM »

Quote from: Skeeter65 on April 15, 2021, 03:10:42 PM

Looks good Brent. How would a factory 2x4 perform on a 445 stroked 390 for the street? Just weighing options and I have an old friend I went to school with that has one I may be able to talk him out of. Other than that I will likely go with the Performer RPM. And TFS heads if they ever become available. $:-\$

It depends on which factory 2x4.....if it's one like mine, it will do really well. LR 2x4? Not so much....

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Author Topic: Next step for the 352.... (Read 4515 times)