My New TSP Sleeper 482 Stroker Motor

I've mentioned on several threads that I was expecting delivery of the new TSP 482 Stroker motor since late last year and that it had finally arrived about two weeks ago. Some have shown interested in this build and Jim Weise has asked me to do a thread on it. So, here it is. I'll ask Jim to correct any info that is inaccurate and add additional info he feels is important.

The goal when I ordered the motor last year was to build a BBB that was totally stock appearing and dyno'd with at least 50o HP. It also had to run and sometimes race on 93 octane pump gas and have sufficient vacuum for my power brakes. The only exterior change from stock is the TA Performance Sleeper SE Stage 1 aluminum heads painted Buick red. Otherwise, the engine bay shows completely stock. The final dyno numbers were 502 HP @ 5500 RPM & 553 ft. lbs. torque @ 4000 RPM. Here's a video of the final dyno pul



The 502 HP was achieve after a cam change and three dyno sessions which included one distributor change and lots of tweaking of the Quadrajet carb provided by Everyday Performance. The build particulars:

Block - 1970 SA 455 block with a good bore that was only honed .008
Crank - Offset crank with 4.05 in. stroke
Total Cubic inches - 475 (even though this build is called the 482 if bore is increased .030)
Heads - TA Stage 1 aluminum SE bare blanks with Level 2 porting by Jim Weise. This is the "sleeper" version with the heads machined to show the scallops between the cylinders like the original factory iron heads. An additional cut was also made to the intake side of the heads to allow use of stock valve covers with standard gaskets.
Cam - The first cam that didn't quite make the 500 HP goal was a custom grind hydraulic roller with lift of 224/238 @ .050, .547/.587 lift, 115 Lobe Center, a very mild roller. The second and final cam is, I believe, a Comp Cam 4/7 Swap (changes the firing order) 230/244 @ .050, .590/.565 lift , 112 LC installed 6 degrees advanced for best idle. Idles at 800 RPM with 14 HG vacuum.
Valve Train - Stock 68-69 Buick rockers & custom length pushrods. (roller rockers wouldn't fit under the stock Buick valve covers with only one gasket).
Intake Manifold - stock 1970 Buick 455 port matched.
Exhaust Manifolds - stock 1970 Buick iron ported with outlets opened up to about 2.4 in. to mate up with my MagaFlow 2 1/2 in. downpipes. (rest of exhaust is 2 1/2 in. stainless MagnaFlow with "X" pipe.
Carb - 1973 800 CFM Quadrajet performance built by Everyday Performance. Lots of tweaking was needed to get this carb to provide enough fuel all throughout the RPM range.

The motor was installed yesterday, April 22 and it started right away. We ran out of time to buckle it up for a test drive so, the install will be completed on Monday after which I'll post again. She looks and sounds really good so far.

https://youtube.com/shorts/WR1Pua92mi4

 

Very nice Ray! Looking forward to seeing it at BG. Are you going to run it there?

 

Great new toy, I'm surprised rollers rockers wouldn't fit, I ran rollers on Iron heads with a 308s cam and used the ta thick single valve cover gasket.

 

Nice Ray!
What exhaust manifold gaskets are those? I put some thin copper ones on and have a leak.....

 

NICE! It will totally smoke with all that TQ then the Hp takes effect, sweet!

 

I believe they’re REM-Flex gaskets. Jim will correct me if I’m wrong.

 

I’ll be trailering it up and plan a few passes in BSA as long as it feels good between now and May 11th.

 

It needed a new accelerator pump and had to be re-stagger jetted much richer before proper A/F ratio was obtained.

 

Wow, that's awesome Ray, Congratulations! I like the torque curve on that dyno sheet!!!

 

Me too. Over 500 lb ft all the way to over 5000 RPM. Hope it runs on the street as well as it looks like on paper.

 

I'm sure you will not be disappointed!

 

Very cool sleeper .

 

That's sweet Ray, congratulations! I'm so close to my build being done too. I'm chomping at the bit to get it to the dyno to see how she does.

 

I'm impressed Ray, thats going to make for a great sleeper.

 

Congratulation sounds great, looks great. Glad that everything worked out in time for BG.

 

Hey Ray, the '68-'69 rocker arms were aluminum, not stamped steel.

 

Perhaps you're right. Here they are on my motor while Jim was building it. He likes those rockers for some reason.

 

Those babies can handle a lot. I ran the slightly weaker '67 rockers with the TA 308S solid cam for years, finally had a tip break off one; I never would've thought they'd handle 0.600" lift for so long. You'll be just fine with the beefier '68-'69 versions.

Devon

 

You got it right Ray.. looks good.. you should add a few more pictures.. everybody likes pictures..

I should say that Ray got this done, in the "time of no parts" due to some horsetrading around and some luck.. otherwise he would be waiting, just like everyone else.

Big thanks to Boe for allowing me to use the roller cam he purchased in a parts load a while back... Ironically, it had been originally ground for me by Comp Cams.. Sold to a customer out west, then that guy sold it to Boe, so it made it back to Iowa.. and then Boe brought it to me.. along with a bunch of other stuff for his projects. Not really the cam we would use for what he is doing, so it was an extra, and good fortune smiled on Ray with this one..

Actually, with my 9.5" converter, with an STR of 2.1 at max stall speed your putting 1160 ft lbs to the input shaft of the trans... going to be a fun combo.

Looking forward to your report back after the first drive.

Thanks
JW