302 ford intake advise
 

306 ci ford, fun little grudge race car. 2700 lbs, ported 351 heads, 11-1 compression, solid flat tappet. want to make peak power at 6800-6900 rpm. Id like to shift at 7400 and cross near 7600-7800. Shooting for 215-220 cfm through heads. Cam will be roughly 270/276@.050 .625/.574 on a 105 or 106. C4 trans, 5800-6000 converter. 5.13 gear, 28" tire, 2700-2750 race weight. Looking for high tens. Dual Plane or Vic Jr? If dual plane....which one? Thanks a lot!!! Any real world 302 combinations to help learn from?

Re: 302 ford intake advise
 

No brainer victor jr

Re: 302 ford intake advise
 

I ran a similar combination for a few years.306 c.i. small block,2900 lb. car.A little smaller cam and 4 speed.I would also suggest the Victor Jr., However an Edelbrock F4-B would be a good choice for a dual plane.I used one of those with a 1" spacer before the Victor manifolds were available.

Re: 302 ford intake advise
 

Mark.....just what was combination, if you dont mind....and what did it run? Thanks! Looking for real world examples here......I appreciate it.

Re: 302 ford intake advise
 

It was a 306 with 351 iron heads light port work. 2.78 four speed .Cam was a Crane flat tappet 242/252 @ .050.12.5 :1 compression.2960# with me in the car.5.43 gear and 14x32 tire.Went 11.68@ 115mph.

Re: 302 ford intake advise
 

Have you considered a small stroker kit? I have a 331 cube SB Ford bracket engine I have ran in my 85 Mustang Stocker. Its a flat top piston pump gas deal, with a 570 lift solid flat tappet cam, out of the box AFR 185 heads, 650 Holley on a Victor Jr intake. With a Jerico 4 speed, 4.88 gears, 9x29 slicks, at 3050 pounds, it runs mid 10.s at 128 MPH (best of 10.29)shifting at 6800 RPM, hitting 7200 thru the traps. Dynoed at 485 HP, which is pushing it with a stock 5.0 block, after 5 years, we found several cracks in the main cap bolt holes, migrating down to the cam tunnel, so a new block in in order now, but it was together for 5 seasons.

Re: 302 ford intake advise
 

I agree about the stroker. The only reason we are doing it is because we basically have all the parts now as it is.

Mark..............what did you shift at? Moroso calculator says you mustve crossed about 6600. AND what intake/carb?

Re: 302 ford intake advise
 

I'd leave with a 7800 chip in the two step,shift @ 7000.Finish line rpm was around 6800-7000 if I remember correctly.That was with the F4-B and an 800 cfm holley.The motor didn't like dragging a big tire around.

Re: 302 ford intake advise
 

Mark.....do you have any incrementals?

Re: 302 ford intake advise
 

Rory
was wondering if you could give more specs on the cam you ran in your 331

Re: 302 ford intake advise
 

Parker intake with a 4 hole 1" tapered spacer...Better plenum than a Victor JR.

Re: 302 ford intake advise
 

I probably have them buried somewhere. If I can find them I'll post it for you.

Re: 302 ford intake advise
 

Sure, Comp Cams FS 290B-6, Int. lift .576", Exh. .570" 106 lobe sep.,
Int. dur @ .050 255, exh.266.
After 5 years, the cam and lifters look great, so they will be going back in a new block.

Re: 302 ford intake advise
 

I ran a Victor jr. on my 270 hp 302 crate motor and it ran pretty good. I did have a few drivability issues like stumbly running in the water and staging. I installed a Performer RPM air gap dual plane and it cured any issue I had plus picked up about five hundredths overall and much easier to drive. This combo uses a .498 lift hydraulic roller and a GT40P head. Went 11.40s at 111mph @2930 lbs.

Re: 302 ford intake advise
 

On the Dyno, My Crate Motor 302/270 liked the Victor JR w/ a 1" spacer. and Although the 750 made a touch more peak HP, a smaller carb made better average TQ and HP throughout the range


Here is a fun 331 built at the local racing engine shop. With the exception of the AFR's , a budget build, stock unfilled block, Cast scat crank , scat rods etc.. Victor JR, and Dave insisted on the Demon carb..

Enjoy, https://www.youtube.com/watch?v=tfMEigESypE
https://www.youtube.com/channel/UC69...revJlEXyJH9k9w

Re: 302 ford intake advise
 

can you give me details of this crate motor? auto or stick ? and how much converter and what trans if auto? thanks!!