Don Terrill’s Speed-Talk

Dan Barton ported the heads and intake

Block is IA and heads are KRE HP
Thanks for the replies, I will know more after this weekend just how far I have to go to get to get my 8 but I think it will run a real low 9.2 to high 9.1 if that is the case then I think with a cam update and some other changes 8 might be possible.

Thanks

If your making a tic under 900hp, 890 to be exact with a bbc that is very close to square, then why would you want to change the camshaft. 900hp with pump gas on an engine that is 11.1 compression and is almost squared is incredible. You'll make close to 1000hp on that same pump gas with 11.1 if yo...

CamKing wrote:

bc wrote:CamKing what would you recommend for lift?

I'd need to see the port flow CFM at .400", .500", and .600".

290, 348, 399

4.310 bore
4.250 stroke
11:1 compression
276-286@.050 duration, .750-.735 lift with 1.65 rocker 112l/s
heads flow 430in 280ex 2.25in valve 1.70ex valve
2" headers
1400cfm carb
Made 890hp at 7300 690tq at 6100

CamKing what would you recommend for lift?

Car has run 9.45 @ 142 with full exhaust weighing 3600lbs DA was 2980ft that day.
Thanks for the info guys. I am going to add more lift and go back to the dyno and see what it does. The heads keeping flowing right up to 1.000 lift so I feel it should like the added lift.

Made 890hp, compression is 11:1 built to run on 93 octane.

Engine is 496 with a 2.25 valve and .750 lift, peak hp is 7300. I feel the engine would love at least another .100 in the lift department. Just wondering if adding the lift but keeping the duration the same would increase the peak rpm.

Just wondering if adding .125 of lift to an engine that is currently in need of more lift will it increase the rpm range.

Thanks a lot Larry. The tq peak ended up being about 500rpm higher than I thought it would be. I have thought about getting 1.8 rockers to get the lift up more where it should be.

Here is link to a run on youtube http://www.youtube.com/watch?v=rbaGcUJVBeE Bore 4.31 Diamond pistons dished for 11:1 compression Stroke 4.25 6.800 rods KRE HP heads ported by Dan Barton flow 430cfm Edelbrock Victor intake flowed 413cfm when bolted onto the head, ported by Dan Barton 1250 carb that ...

We just made 1.79 hp/cid with our 496 Pontiac with 11:1 compression. Here is the dyno sheet http://pontiaczone.com/forum/attachment ... 1257719369
The heads and the intake were done by Dan Barton.

What do you guys think of the comp HXL series of lobes?