350 - 270 Combo Horsepower

[njk53]

My brother and I have been tossing around the idea of going from the BBC 402-300 combo we currently have in our car to a 350-270 combo. My question is, can anyone who has run this combination in the past, give me a ballpark horsepower and torque numbers this combination has the potential to make?

We currently run the BBC 402-300 combo.

[Jim Hanig]

Needs to make north of 400 hp put you .06 to 07 under.

[njk53]

Originally Posted by Jim Hanig

Needs to make north of 400 hp put you .06 to 07 under.

I would agree with your comment but, I need some advice from someone who has ran or has built the 350-270 combo to get an idea in regard to horsepower/torque numbers to help us decide whether or not it is going to be a worthwhile combination to build. We will be starting from scratch if we choose to go the 350-270 route.

[rick winchester]

Contact Ron Matson and Bruce Noland. They have had good success with this combo and I think they both have some real good parts for sale after moving to another class and engine combo.

[Jim Hanig]

Originally Posted by njk53

I would agree with your comment but, I need some advice from someone who has ran or has built the 350-270 combo to get an idea in regard to horsepower/torque numbers to help us decide whether or not it is going to be a worthwhile combination to build. We will be starting from scratch if we choose to go the 350-270 route.

I have worked on several in my 15 plus years , But go ahead .

[gsa612]

How fast have you gone with the the 402 this time around?.Has it been on a dyno?. gsa612

[rick winchester]

I hate to get into a pi%%ing contest on which engine is better . that being said anyone who thinks a 402/315 is better than a 350/270 is mistaken. If I am wrong someone needs to notify Demarzo,Johnny Gray and Sepanek so they will quit wasting their money and time running them. This is just one guys opinion ,I can say that the 402/315 is way to high. 280 to 285 would be a lot closer in stock. SuperStock is a different story. Oh by the way I run the 350/270 @278 not 270. Rick.

[Joe DeMarzo]

Rick & Jim are dead on. The 350/270 rated 278 is a better combo. I had a 402 big block in my nova and researched a number of combo's and Johnny Gray gave me the best insights. What is nice is that a lot of racers run the combo (HP avg) and we share information on what works and doesn't. Rick I think you should move to D-1 (lol) and we can learn from each other. . It is not all about HP but torg, converter, carb, and suspension. Good luck with your choice njk53.

By the by Gray, Sepanek and I all have different engine builders.

[rick winchester]

Joe, I would love to come east and race someday,but from what I hear about the taxes up there I could not afford to live anywhere near the east coast. As for sharing info I really don't think you want to slow down ?lol. Hope to meet you someday,maybe at the nationals.If you are ever near Cincinnati look me up. Take care. Rick. ps You are right ,Johnny knows his stuff and the Sepaneks are damn fast when it counts.

[njk53]

Originally Posted by rick winchester

I hate to get into a pi%%ing contest on which engine is better . that being said anyone who thinks a 402/315 is better than a 350/270 is mistaken. If I am wrong someone needs to notify Demarzo,Johnny Gray and Sepanek so they will quit wasting their money and time running them. This is just one guys opinion ,I can say that the 402/315 is way to high. 280 to 285 would be a lot closer in stock. SuperStock is a different story. Oh by the way I run the 350/270 @278 not 270. Rick.

Rick, when you say the 402-315 is way too high do you mean the NRHA factored horsepower as being way too high? If so I agree. We have asked the NHRA for a HP reduction for our combo but no dice. I hate to admit it I raced another K/SA car heads up at Norwalk a few weeks ago and he just walked all over me, it was that bad. I have had a couple of engine builders that stated the 402-300-315 engine combo wouldn't be their first choice. If you guys out there knows of anyone successfully running the 402-300-315 combination, I would sure like to speak to them for advise. Maybe we are doing something wrong, I don't know. I feel our car is just too heavy for the power it makes.